Robicon Corporation Medium-Voltage Perfect Harmony Drives Data Compilation
Robicon Corporation Medium-Voltage Perfect Harmony Drives Data Compilation
Robicon Corporation Medium-Voltage Perfect Harmony Drives Data Compilation
Robicon Shanghai Representative Office
460 Gaoxiang Ring Road, Pudong, Shanghai
Tel: 021-58843308 Fax: 021-58842538
https://www.robiconperfectharmony.com/
table of Contents
table of Contents
Company Profile
product description
Product Principle
Product hardware composition
Product Series
Features summary
Practical application
Application Article
User report and certification
Domestic application performance
Product Certificate
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538
Company Profile
Company Profile
Robicon company is well-known in the world for the production of medium and high voltage inverters, and is headquartered in Pennsylvania, USA
Newckensington, New Zealand. The company is committed to serving users wholeheartedly and continuously providing internationally advanced technology
product. In 1994, the perfect harmonic-free series of high-voltage inverters were launched, which essentially solved the problem of high-voltage and high-power
There are many problems in the application of frequency converters, such as harmonic pollution to the power grid, low input power factor, motor heating,
Torque pulsation, dv/dt affects motor insulation, etc., causing great repercussions in the international market. Robicon is in
The first high-voltage inverter to adopt IGBT technology, its unique conception and modular design make it perfect
Bo series high-voltage inverters are much better than ordinary high-voltage inverters in terms of reliability and easy maintenance.
Robicon's high-voltage inverter has now occupied the first place in the US market. In Japan, South America and China
In the field, Robicon's high-voltage inverters also dominate the market. Perfect harmonic-free series inverters in the whole country
The international market has exceeded 2500 applications. Our users are large companies such as DOW CHEMICAL
(Dow Chemical Company), SHELL OIL (Shell Oil Company), MOBIL OIL (Mobil Oil), etc.; also
There are many municipal water plants and sewage treatment pumping stations, such as water plants in Detroit, Dallas, and Sydney, Australia.
Since Robicon entered the Chinese market in the 1990s, it has also reached an application performance of 300 units. Users include Daqing
Huaneng Xinhua Power Plant, Zhejiang Zhenhai Power Generation Co., Ltd., Shanghai Minhang Power Plant, Nanhai Eastern Petroleum Company, Shanghai
Sea Confluence Sewage Phase II Project, Harbin Wind Tunnel Test, Suzhou Singapore Industrial Park, Liaohe Oilfield, Baosteel, First
Steel etc.
Every one of our users chooses to use Robicon’s products through a large number of other similar products.
Decisions are made after comparison and careful consideration. The company is very confident in the Chinese market and believes that as its business expands,
There will be more and more users, and we will provide first-class products and first-class services to the majority of users.
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product description
Robicon Shanghai Representative Office No. 460 Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 2
product description
Robicon PERFECT HARMONY series inverters are unit series PWM voltage sources
It has the characteristics of low harmonic content, high input power factor, no special requirements for the motor, and high reliability. Its unique
The advantages are shown in the table below.
Table 1 Comparison of Perfect Harmonic-Free Inverter and other types of inverters
Ordinary high voltage inverter Perfect harmonic free series high voltage inverter
There is harmonic pollution to the grid, and harmonic filtering is often required
Device. The manufacture of harmonic filters is related to power grid parameters.
Once the parameters are changed, it has to be re-tuned, which is quite troublesome.
Frequency conversion with more than 30 pulses is adopted, without any harmonic filter
It can meet the strictest voltage and current distortion of power supply departments in various countries
Requirements.
The harmonic components of the output waveform of the motor are larger, so increase the motor
Noise and heat, motors often need to be derated. Motor
Insulation also needs to be strengthened because of the dv/dt relationship of the inverter.
Therefore, this type of frequency conversion has special requirements for the motor.
Using multiple pulse width modulation technology, the output is 11 levels, because
The output waveform is a perfect sine wave. Low noise, low heat,
Will not cause the torque ripple of the motor. There are no special requirements for the motor,
Used in domestic or imported induction motors.
The power factor of the current source high-voltage variable frequency will decrease as the speed decreases
Low, often need to add power factor compensation device, both increase the body
Product, and reduce the overall system efficiency.
Due to the use of diode rectification, power factor in the entire speed range
Both can reach 0.95.
The current source high voltage frequency converter is very sensitive to the fluctuation of the power grid.
When the grid voltage drops to -15%, it will often trip.
Since it is a voltage source type frequency conversion and has a capacitor, this series of frequency conversion
The adaptor is particularly resistant to changes in the power grid. Voltage change can withstand
+10%/-30%.
The high-low-high frequency conversion has transformers for both input and output.
The system efficiency is very low, the noise is high, and the heat is severe. And speed
When it comes down, the efficiency also decreases.
The frequency conversion efficiency is 98.5%, and the system efficiency is higher than 97%.
The speed range remains unchanged.
The high voltage frequency conversion made with GTO or SCR has very complicated
Absorption protection circuit, once the device fails, the whole set frequency conversion
The device has to be shut down. Maintenance needs to be sent directly by the inverter manufacturer.
Time-consuming and costly, causing losses to production.
With modular design, maintenance is simple. Once the power unit fails,
The user’s ordinary technician can replace the power unit within 10 minutes.
Replacement will not affect production. And this series of frequency conversion has power
The option of unit bypass is available for users to choose. Power unit bypass option
Allows users to continue operation in the event of a power unit failure
Frequency conversion, no need to stop immediately. Greatly improve reliability.
product description
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The public specifications of the perfect harmonic-free inverter are shown in Table 2 (mainly air-cooled. Water-cooled or other special needs can be consulted.
Inquire Robicon)
Table 2 Common specifications of standard perfect harmonic-free inverter system
project description
Horsepower range GEN III: maximum 6300V, 3000hp
GEN IIIe: Maximum 6600V, 8000hp (for more power, please consult Robicon)
Input line voltage 2.2 kV, 3.0 kV, 3.3 kV, 4.1 kV, 4.8 kV, 6.0 kV, 6.6 kV, 6.9 kV, 7.2 kV, 8.4 kV,
10.0 kV, 11.0 kV, 12.0 kV, 12.5 kV, 13.2 kV and 13.8 kV.
The allowable error of the input voltage is +10%, -5% of the nominal value at the rated output
Input power factor 0.95 when the load exceeds 10%
Output line voltage 2.4 kV, 3.3 kV, 4.16 kV, 4.8 kV, 6.0 kV, 6.6 kV, 6.9 kV, 7.2 kV (other voltage levels
Consult Robicon Company)
Output frequency resolution ±0.5%
Speed range 0.5-330 Hz (related to the motor)
Overload capacity is related to the type and setting of the installed unit
Acceleration time range 0.5-3200 seconds (related to load)
Output torque Constant torque at rated speed.
Cabinet NEMA 1 air-cooled type, IP31
Ambient temperature 0-40°C
Humidity 95% non-condensing
The maximum altitude is 3300 feet. It must be derated when it exceeds 3300 feet.
Dust pollution <100 [email protected] mg/cubic foot
Gas pollution <4 PPB active halide and sulfide
1. Product principle
The perfect harmonic-free high-voltage inverter adopts a medium and high-voltage inverter composed of several low-voltage PWM power units connected in series.
Powered by a multi-winding isolation transformer, a high-speed microprocessor and optical fiber realize control and communication. The frequency conversion
The inverter can eliminate most of the harmonic currents and achieve perfect frequency conversion without harmonics. Its input and output harmonics fully meet the relevant requirements.
International and national standards. The input power factor of the inverter remains above 0.95 within the entire load variation range, and the overall
The efficiency can reach more than 97%.
With the development of power electronic devices and microprocessor technology, frequency conversion devices are moving towards medium and high power at a steady pace.
Step forward. Its energy-saving benefits and good control performance are being recognized by more and more people. But high power frequency conversion
product description
A prominent problem in the use of the inverter is its harmonic interference. When the inverter is working, it will bring harmonic interference to the power supply.
It will cause other equipment connected to the same power supply to work abnormally, add heat, or even damage it. Moreover, the inverter output
The influence of harmonic interference in the current often makes the motor have to be "derated". The greater the power, the harmonic interference
The more serious the impact. Therefore, the power departments of various governments have formulated standards to limit harmonics, and such restrictions will follow
With the increase of non-linear variable current equipment, it is becoming more and more stringent. Currently, the most commonly used standard is the IEEE established in 1992
519 standard. Major manufacturers of medium and large inverters in the world are striving to develop changes that meet and exceed the IEEE 519 standard.
Frequency converter products to enhance its competitiveness.
The American company ROBICON has made outstanding achievements in this regard. Its perfect harmonic-free series inverter
(Perfect Harmony Series Drive), adopts a new structure of power units connected in series to connect multiple low-voltage
PWM power units are connected in series to form medium and high voltage inverters, which better solve the general 6-pulse or 12-pulse inverter
The inevitable harmonic interference problem, its performance meets or even exceeds the requirements of IEEE519, and the system efficiency,
No need for additional filtering components and power factor compensator, and performance/price ratio has significant advantages.
1. Main circuit
Figure 1 is a block diagram of the main circuit of a 2400V Perfect Harmony inverter. Each phase of the transformer consists of 3
The same power units are connected in series, and each unit is powered by a secondary isolation coil of the input transformer. 9 secondary
The rated voltage of the coil is 480V, and the rated power is one-ninth of the total power. The power unit and its coil are mutually insulated
It has a withstand voltage of 5KV to ground.
Because the input rated voltage of each power unit is 480V, the addition of 3 is the phase voltage of 1440V, and the corresponding
The line voltage is 2494V, and the rated value is regarded as 2400V. Similarly, when there are 4 or 5 power units connected in series, the rated
The voltage reaches 3300V and 4160V respectively. When the input rated voltage of each power unit is 690V (or 630V)
When 5 (or 6) power units are connected in series, the rated output voltage can reach 6000V.
Each power unit is a three-phase input and single-phase output PWM inverter composed of IGBTs.
Output 0~480V (or 690V) adjustable voltage and 0~120Hz adjustable frequency, its structure principle is the same as the usual low-voltage frequency conversion
The devices are similar (see Figure 2).
The power unit receives commands from a central controller composed of a microprocessor. Commands are transmitted via optical fiber
To maintain the 5KV insulation and ensure good anti-interference and reliability.
There is a small phase difference between the secondary coils of the transformer that supplies power to the power unit during winding, which can
In order to eliminate most of the harmonic currents generated by each unit, the fundamental current is basically a sine wave, and the power factor is in the whole
It can be kept above 0.95 within the load change range.
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product description
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power
unit
A1
power
unit
B1
power
unit
C1
power
unit
A2
power
unit
B2
power
unit
C2
power
unit
A3
power
unit
B3
power
unit
C3
2400 VAC
Asynchronous motor
With 9 isolation times
Transformer
(4,160VAC is 15)
Input three phase
AC power
(Any voltage)
Figure 1 Topology diagram of perfect harmonic-free inverter (three units per phase, output 2400 VAC) Figure 2 Schematic diagram of typical power unit
3
1
2
T1
T2
+
+
Q4
Q1 Q3
Q2
Dedicated on power transformer
460VAC winding
Unit power output
Local control circuit
local
control
power supply
To/from master
Fiber signal
IGBT Q1-Q4
product description
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Figure 3 shows the measured output (to the motor) phase A voltage and current of a 2400VAC, 1000HP inverter.
The waveform is very close to a sine wave. The total harmonic distortion (THD) of the measured motor current of the perfect harmonic free inverter
Less than 3%.
Motor phase voltage, peak value = 2000 V
Motor phase A current, peak value = 348.9841 A
1000 horsepower, 2400 VAC motor at full speed and full load
Figure 3 The perfect output waveform without harmonics when the 2400V inverter is fully loaded
Figure 4 shows the voltage and current waveforms of the same inverter at the transformer input, and its input current THD is also less than
3%. From the same figure, the angle at which the current lags behind the voltage is 15 degrees, indicating that the power factor is greater than 96%. Need to explain
What is: The figure shows that 3 power units are connected in series, which is the worst case for a perfect harmonic-free inverter. when
Power unit increased to 3300V
The situation will be better when 4 of 4 or 5 (or 6) of 4160V/6000V. lose
The harmonics of the input and output have a greater improvement.
Figure 4 The perfect harmonic-free input waveform when the 2400V inverter is fully loaded
2. Control circuit
The block diagram in Figure 5 shows how the perfect harmonic-free inverter control system is realized. Control system by signal
Interface board and conversion board, an A/D conversion board, a Pentium processor board, a digital modulator board and one to two
It consists of a fiber optic interface board.
Input current Input voltage
product description
The signal interface board processes the feedback signal collected from the inverter.
The function of the A/D conversion board is to sample the input and output voltage and current and convert them into digital quantities to send
Teng processor.
The Pentium processor completes all the functions of motor control and generates three-phase voltage commands for the digital modulator. In addition,
It detects input voltage and current to provide meter functions (such as power factor, input power and harmonic calculation), input protection
Protection (overcurrent, excessive reactive current, undervoltage and single-phase) and input voltage value, frequency and phase for synchronous switching
angle.
The digital modulator includes one master, three slaves and four modulators EPLD (erasable programmable logic device).
The same instruction code. Each EPLD provides 6 perfect communication without harmonic units.
The optical interface transmits data between the modulator EPLD and the unit through the optical channel. Each fiber interface board at most
It can communicate with 12 units. The communication circuit in each power unit serves as the slave station of the EPLD on the modulator board.
The control circuit in each power unit converts the received information into IGBT trigger pulses.
3. Control mode
①Open loop vector control (OLVC)
This control mode is used in most single asynchronous motor applications. In this way, the frequency converter estimates and
The slip of the motor related to the load torque, and can provide close to the vector control inverter (with
Speed sensor/transducer) performance. If the motor parameters are correct, the inverter can increase the speed even at 1% of the rated speed.
For very good performance.
②Open loop test mode (OLTM)
This control method ignores the motor current feedback signal. This control mode is used to check the function of the inverter during commissioning.
Rate unit modulation or no-load test of the inverter, it can also be used to test the Hall effect transmission when the motor is first connected to the inverter.
Whether the sensor can work normally and provide correct feedback signal.
③Voltage/frequency control (V/Hz)
This control mode is used when the inverter is connected to multiple parallel motors. The control algorithm is similar to the open loop vector
Quantity Control (OLVC), but some motor parameters are not used in the control algorithm. Similarly, many features in OLVC
It is invalid in this way. These features include fast bypass, rotating load and slip compensation.
④Synchronous motor control (SMC)
This control method is similar to OLVC and the main difference is the flux regulator. Flux regulator output
Form the command of the excitation current controller, which is added to the magnetic field controller through the analog output module of WAGO.
⑤Closed loop control (closed loop vector control or closed loop synchronous motor control)
In some applications, the motor needs to run for a long time at low speed and high torque, then coding is required
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product description
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To provide the motor speed feedback signal, the perfect harmonic-free inverter uses plug-in components to connect with industry standard encoders
Pick up.
4160 VAC
Asynchronous motor
Input three phase
AC power
(Any voltage)
There are 15 isolated secondary
Special transformer
(9 at 2400 VAC)
unit
A1
unit
B1
unit
C1
unit
A2
unit
B2
unit
C2
unit
A3
unit
B3
unit
C3
unit
A4
unit
B4
unit
C4
unit
A5
unit
B5
unit
C5
optical fiber
Interface board
Voltage attenuator
Signal conversion board
Operation panel
Microcomputer board
optical fiber
Interface board
ADC board
&
System interface board
digital
Modulator board
Input voltage and current feedback
Figure 5 Control structure block diagram of 4160V perfect harmonic free inverter
product description
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2. Hardware composition:
The typical structure of GIII type is shown in the figure below. Each inverter is usually composed of multiple parts. They are:
Controller part, user I/O part, control part, unit part.
Transformer part
User control line and control power
Source part
Control part and
Unit part connection
mouth
The cooling part is separated to fit
Longer combination
Figure 6 Typical GEN III perfect harmonic-free inverter
1. Transformer and I/O part (Figure 7)
The transformer part of the GEN III perfect harmonic free inverter includes an input isolation transformer. Enter the power cord from here
Part of it enters the inverter, and the output power cord to the motor is also drawn from this part. Both input and output power cords can be used
The upper incoming line can also use the lower incoming line. In addition to the phase-shifting main power transformer with multiple winding secondary coils, the transformer part also
Include one or more fans to cool the inverter.
The user I/O part of GEN III perfect harmonic free inverter includes user control line, control power supply and fan control
Terminal board for connection. If the inverter is ordered with the optional motor monitoring and power measurement instrument (PQM) option,
Also installed in this part. The main components of the transformer are shown in Figure 8.
product description
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Figure 7 Transformer and user I/O section
Figure 8 Main components of transformer and user I/O section
Fan
Transformer part
transformer
product description
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2. Unit and control part (Figure 9)
The discrete power unit is installed in the unit part. The mechanical and electrical parameters of all power units are the same.
Easy to exchange. Each unit communicates with the main control system through optical fiber, which is the communication between the unit and the control cabinet
The only connection between the main control parts, so each unit is completely electrically isolated from the main control system.
Figure 9 Unit part of GEN III perfect harmonic free inverter
The control cabinet door of the perfect harmonic-free inverter can be removed, including the main control system, signal modulation board, WAGO
Input/output system, etc. The main control system is shown in Figure 10.
Fiber optic cable to the bypass board
cable
Modulator board
Optical fiber interface board
Communication board
Micro processing board
ADC board
System interface board
Power terminal
Sub Figure 10 Main Control System
Unit part
Control part (after
surface)
Control section
(Front) Fiber optic cable to power unit
product description
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3. Product series:
1. GIII perfect harmonic free inverter
Table 3 to Table 6 list the unit configuration and parameters of the GIII perfect harmonic free inverter.
Table 3 Robicon GENIII unit parameters
Number of units per phase Line voltage (VAC) Total number of inverter units Power range (hp) Power unit current value
3 3,300 9 Maximum 1500 70A, 100A, 140A, 200A, 260A
4 4,160 12 Max 2000 70A, 100A, 140A, 200A, 260A
6 6,600 18 Maximum 3000 70A, 100A, 140A, 200A, 260A
Table 4 3300VAC GENIII unit parameters: 9 units in total, 3 (630VAC) units connected in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
200 33 70 20000 124.5 2540 2177 70
300 49 70 30000 124.5 2540 2177 70
400 64 70 40000 124.5 2540 2540 70
500 80 100 50000 124.5 2540 2812 100
600 96 100 60000 124.5 2540 2812 100
700 112 140 70000 124.5 2540 3402 140
800 128 140 80000 124.5 2540 3402 140
900 145 200 90000 249 3124 3402 200
1000 162 200 100000 249 3124 3629 200
1250 202 260 125000 249 3480 3856 260
1500 242 260 150000 249 3480 4082 260
Table 5 4160VAC GENIII unit parameters: a total of 12 units, 4 (630VAC) units connected in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
300 38 70 30000 124.5 2,540 2315 70
400 51 70 40000 124.5 2540 2,315 70
500 63 70 50000 124.5 2540 2,633 70
600 75 100 60000 124.5 2540 2,996 100
700 89 100 70000 124.5 2540 2,996 100
800 101 140 80000 124.5 2540 3,496 140
900 114 140 90000 124.5 2540 3,496 140
1000 126 140 100000 124.5 2540 3,496 140
1250 160 200 125000 249 3480 4,313 200
1500 192 200 150000 249 3480 4,313 200
1750 224 260 175000 249 3480 4,540 260
2000 256 260 200000 249 3480 4,994 260
Table 6 6600VAC GENIII unit parameters: a total of 18 units, 6 (630VAC) units in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
600 48 70 60000 249 3480 3,496 70
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700 56 70 70000 249 3480 4,086 70
800 64 70 80000 249 3480 4,086 70
900 72 100 90000 249 3480 4,086 100
1000 80 100 100000 249 3480 4,722 100
1250 100 100 125000 249 3480 4,722 100
1500 120 140 150000 249 3480 5,584 140
1750 140 140 175000 249 3480 5,584 140
1750 141 200 175000 373.6 4369 5,675 200
2000 162 200 200000 373.6 4877 5,902 200
2250 182 200 225000 373.6 4877 5,902 200
2500 202 260 250000 373.6 4877 6,129 260
2750 222 260 275000 373.6 4877 6,356 260
3000 242 260 300000 373.6 4877 6,356 260
1 The horsepower value on the motor nameplate should not exceed the rated horsepower value of the inverter.
2 The rated input current of the inverter is the rated current of the transformer.
3 The rated output current of the inverter is the maximum current of the unit.
4 The loss unit is BTU, based on a loss of 3kW per 100 horsepower.
5 The minimum ventilation unit is cubic meters per minute.
6 represents the minimum arrangement length, in millimeters, subject to change.
7 Indicates the estimated minimum weight of all cabinet combinations, in kilograms, subject to change.
8 The unit size corresponding to a certain power inverter is based on the precondition that the motor efficiency is greater than 95% and the power factor is greater than 85%.
2. GIIIe type perfect harmonic free inverter
For larger current demand, Robicon company provides GIIIe perfect harmonic-free inverter with a typical appearance
As shown in Figure 11. The unit and configuration are shown in Table 7
To table
Figure 11 Appearance of a typical GIIIe perfect harmonic-free inverter
product description
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Table 7 Robicon GENIIIe unit parameters
Number of units per phase Line voltage (VAC) Total number of inverter units Power range (hp) Power unit current value
2 2,300 6 Maximum 3000 315A, 375A, 500A, 660A
3 3,300 9 Maximum 4000 315A, 375A, 500A, 660A
4 4,160/4,800 12 Maximum 6000 315A, 375A, 500A, 660A
5 6,000 15 Maximum 7000 315A, 375A, 500A, 660A
6 6,600 18 Max 8000 315A, 375A, 500A, 660A
Table 8 2300VAC GENIIIe unit parameters: 6 units in total, 2 (690VAC) units connected in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
1500 324 375 114,000 8,800 172 7,450 375
1750 378 375 133,000 8,800 172 8,200 375
2000 432 500 152,000 8,800 172 8,800 500
2250 486 500 171,000 8,800 172 9,500 500
2500 540 660 190,000 8,800 172 10,200 660
3000 648 660 228,000 8,800 188 11,500 660
Table 9 3300VAC GENIIIe unit parameters: 9 units in total, 3 (690VAC) units connected in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
1750 264 315 133,000 15,000 172 9,700 315
2000 301 315 152,000 15,000 172 11,200 315
2250 339 375 171,000 15,000 172 11,200 375
2500 377 375 190,000 15,000 172 12,000 375
3000 452 500 228,000 15,000 188 13,400 500
3500 527 660 266,000 15,000 188 14,900 660
4000 603 660 304,000 15,000 188 16,400 660
Table 10 4160VAC GENIIIe unit parameters: a total of 12 units, 4 (690VAC) units connected in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
2250 269 315 171,000 18,000 192 13,800 315
2500 299 315 190,000 18,000 192 14,600 315
3000 359 375 228,000 18,000 208 16,200 375
3500 418 500 266,000 18,000 208 17,900 500
4000 487 500 304,000 18,000 208 19,100 500
5000 598 660 380,000 18,000 232 22,800 660
Table 11 6000VAC GENIIIe unit parameters: 15 units in total, 5 (690VAC) units connected in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
3500 290 315 266,000 25,000 248 20,100 315
4000 331 375 304,000 25,000 272 21,900 375
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Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
5000 414 500 380,000 25,000 272 25,500 500
6000 497 500 450,000 25,000 272 29,100 500
7000 580 660 532,000 25,000 272 32,700 660
Table 11 6600VAC GENIIIe unit parameters: a total of 18 units, 6 (690VAC) units in series
Horsepower 1 Input current 2 Output current 3 Loss 4 Ventilation 5 Length 6 Weight 7 Unit current 8
3500 264 315 266,000 28,000 248 21,900 315
4000 301 315 304,000 28,000 272 23,800 315
5000 377 375 380,000 28,000 272 27,700 375
6000 452 500 450,000 28,000 272 31,600 500
7000 527 660 532,000 28,000 272 35,500 660
8000 603 660 608,000 28,000 272 39,400 660
1 The horsepower value on the motor nameplate should not exceed the rated horsepower value of the inverter.
2 The rated input current of the inverter is the rated current of the transformer.
3 The rated output current of the inverter is the maximum current of the unit.
4 The loss unit is BTU, based on a loss of 3kW per 100 horsepower.
5 The minimum ventilation unit is CFM (1CFM=0.028 cubic meters per minute).
6 represents the minimum arrangement length, the unit is inches, subject to change.
7 Indicates the estimated minimum weight of all cabinet combinations, in pounds, subject to change.
8 The unit size corresponding to a certain power inverter is based on the precondition that the motor efficiency is greater than 95% and the power factor is greater than 85%.
4. Summary of Features
z Perfect Harmony inverter has very few input and output harmonics (6kV output adopts 36-pulse rectification, 13
Flat inverter), will not cause harmonic interference to the grid, and no filter is required. Meet IEEE 519-1992 for voltage
And the most stringent requirements of current harmonics, so this product can be called "perfect without harmonics".
z This series of inverters provide a power factor higher than 0.95 to the grid, so there is no need for reactive power compensation. z Power devices use mature IGBTs. z It has strong adaptability to grid fluctuations, and the grid voltage can be reduced to 55%. z High-high structure, directly output 6KV high voltage.
z This series of inverters can be used with general motors without special requirements. Compared with motors directly supplied by the grid,
It does not increase noise and heat, so the motor does not need to be derated.
z Compared with general inverters, this series inverters have no common mode voltage, no dv/dt problem, and no need to increase
The insulation strength of the motor is suitable for ordinary new and old motors, and it has perfect protection functions for the motor.
z This series of inverters will not produce torque pulsation that causes mechanical resonance.
z The efficiency of the inverter itself is as high as 98.5%, and the efficiency including the input transformer is also as high as 97%.
z With unit bypass function and neutral point drift technology, it can continue to run when the inverter fails.
product description
No tripping, greatly improving the reliability of the inverter.
z When this series inverter is air-cooled, the noise generated by the fan is less than 75dB. All inverters in this series are modules
Modified design, damaged modules can be replaced within 15 minutes, easy maintenance.
z The volume (including transformer, below 6kV/3000HP, the whole set is only 4877mm wide) is the smallest, and the civil construction cost is low.
z Provide digital and analog input and output interfaces, and can be expanded according to user requirements.
z High degree of protection IP31, higher than the ordinary IP20, low requirements for the user's environment.
z The ambient humidity can reach 95%. z Robicon has a service center and a spare parts center in Shanghai, which can respond to users within 24 hours.
z Robicon has the most performance, especially in power plant applications. The largest domestic performance 9500KW,
The largest performance outside is 19000HP.
Five, practical application
1. The current situation of domestic power plants and the necessity of adopting high-power and high-voltage inverters
With the rapid development of the domestic economy, the demand for electricity is also increasing. During the Tenth Five-Year Plan, my country
With an average annual GDP growth of 7%, the demand for energy is greater than 7%, and there will be a gap in energy supply. The state has invested heavily in new construction
Outside power plants, active energy conservation campaigns are also encouraged. Energy conservation is a long-term national policy of the country, and is aimed at my country’s motor system
The technical level is relatively backward and the energy efficiency is low. One of the main measures proposed for improvement is:
Speed up the research and international cooperation of technology,..., expand its application fields."
The Energy Conservation Law of the People’s Republic of China, the State Council, the Ministry of Finance, and the former Ministry of
As a key measure, AC electric speed regulation and power saving should be promoted seriously, and energy saving has become the general direction of national technological transformation.
In the past two years, Beijing Datang Company's technological transformation has included dozens of frequency conversion and speed regulation transformation projects.
The fifth major measure of North China Electric Power Group's "Ninth Five-Year Technological Transformation" is the energy-saving transformation of pumps and fans.
Huaneng Group has incorporated "large capacity, high parameters, environmental protection and energy saving" generator sets into the group’s unified strategic development
Exhibition planning.
In thermal power plants, most of the factory electricity is used by boiler blowers, induced draft fans, primary fans, and exhaust air.
Machine and boiler feed water pump, circulating water pump, condensate pump, improve the operating efficiency of the above equipment, in addition to
In addition to the large social benefits, it also brings considerable economic benefits to the power plant itself. In thermal power plants, various types of fans and pumps are large
Simple, reliable and easy to maintain AC asynchronous motors are mostly used. However, for the speed regulation of AC asynchronous motors,
It has always been a difficult problem to solve. However, various types of fans and pumps in thermal power plants are often based on changes in load and process requirements.
To adjust the flow rate, traditional mechanical devices are usually used, such as hydraulic couplings, baffles, and valve adjustments. Regulator
Poor temperature, difficult to maintain, and high energy consumption. Therefore, slowly turn to the method of satisfying flow changes through motor speed regulation. From the electricity
In the field of machine control, the power plant's speed control of the motor has gone through the following process:
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product description
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Fixed speed → double speed → internal feedback → frequency conversion speed regulation
With the development of power electronics technology, the asynchronous motor that was difficult to control the speed can be easily adjusted and changed.
Became possible. Therefore, the frequency conversion speed regulation technology has been widely used. In thermal power plants, frequency converters
Coal belt speed control and powder feeder speed control are gradually applied to high-pressure boiler drums/induced fans, condensate pumps, circulating water pumps and even
It is on the electric feed pump. Domestic thermal power plants have learned, investigated, tried, and tested the inverters, especially high-voltage inverters.
Stages of promotion and use. From nearly 150 American Robicon high-voltage inverters currently used in domestic thermal power plants
Look, the use of frequency converters in power plants has the following development trends:
(1) "From small to large"
From 125MW unit to 300MW unit to 600MW (Wangqu Power Plant and Gaozi Power Plant)
Operate on the fan and water pump in the auxiliary furnace. The power range of the inverter ranges from several hundred kilowatts to several kilowatts.
(2) "From old to new"
The application of frequency converters has gradually developed from the transformation of a single old unit to the transformation of old units and the supporting use of new units.
(3) "From less to more"
Starting from a single trial and accumulating experience, inverters have been included in the annual transformation plan at the same time, and the number is increasing.
more. At the same time, the number of power plants that use high-voltage inverters has also increased year by year.
(4) "From simple application to complex application"
From the simple application of a single, low-power high-voltage inverter on the mortar pump, it gradually develops to the adoption of DCS in power plants
The control system is used in the frequency conversion of important sections such as blowers, induced draft fans, condensate pumps, circulating water pumps, and primary fans.
器控制。 Controls. From stand-alone local control to control via DCS, fieldbus, and even via the network.
The frequency conversion speed regulation technology is an emerging technology, which enables the AC asynchronous motor speed regulation and control of the fan and water pump to reach
At a new stage, it will play a positive role in improving the automation control level and energy saving of power generation enterprises.
use. With the development of technology, the reduction of manufacturing cost and the further understanding of users and people’s energy-saving environment
With the enhancement of security awareness, the frequency conversion speed regulation technology will also get greater development.
The motor currents for different adjustment methods are as follows:
0
20
40
60
80
100
100 120 140 160 180 200
Power generation load (MW)
Current (A)
Baffle adjustment, hydraulic coupling, frequency converter
product description
2. Energy saving principle of frequency converter
Slave motor
It can be seen from the academic principle that the speed of a three-phase AC asynchronous motor is proportional to the input frequency of the motor. Correct
For a specific motor, as long as the operating frequency of the motor is changed, the speed of the motor can be adjusted. This is the basis of frequency control
The principle. For centrifugal fans and pumps, the relationship between the speed, head and power is as follows:
In the case of meeting the process, appropriately reduce the flow rate to ensure a certain
Under the pressure, considerable power saving effect can be obtained. Calculated theoretically, if
The allowable flow is reduced by 1/8, and the power consumed by the motor will be reduced by 1/2. frequency conversion
The energy-saving effect of the fan and water pump is particularly obvious.
3. The energy-saving potential of thermal power plants and the benefits of using high-voltage inverters:
z Has obvious power saving effect
Due to the large design margin of auxiliary boilers in thermal power plants in my country, take the supply/induced draft fan as an example, according to SDJ-79
Design rules: The air volume design margin of the blower is 5%, the air pressure design margin is 10%; the air volume design margin of the induced draft fan
The amount is 10%, and the wind pressure design margin is 15%; in addition, the matching motor is manufactured in stages, and the design required
Considering the power, when determining the motor, it will always take a large value to ensure the reliable operation of the system. The margin of design and the super
A large number of them often lead to the phenomenon of "big horse dragging a small car" in the system, which provides a certain space for frequency conversion energy saving. In fact
In operation, the system design is designed according to the maximum load. Due to the change of the load, it is often passed before the inverter is installed.
The flow rate of the fan and water pump adjusted by the valve baffle causes a great waste of energy. After installing the inverter, it will achieve obvious savings
Electric effect. Generally, a general power plant can recover all the investment from the power saving benefits in 2-3 years.
z Improve system operation efficiency and improve equipment automation control level
Take the boiler induced draft fan as an example. After adopting the frequency converter, the pressure in the furnace hall can be well maintained and the boiler can be improved.
The combustion quality is improved, and the efficiency of the boiler system is improved. The frequency converter has a wide speed adjustment range, high adjustment accuracy, and a stable and stable motor speed.
Respond quickly. After the frequency converter is adopted, the ignition range of the boiler is enlarged. The cooperation of the frequency converter and the DCS control system of the power plant,
Will improve the automation control level of equipment,
z After using the frequency converter, the benefits to other equipment in the system
After installing a frequency converter on the fan and water pump of the boiler auxiliary system of the power plant, the power factor of the motor operation can be changed from the original
The coming 0.80 increased to 0.95. The motor realizes a true soft start, and the starting current is controlled at the rated power of the motor
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product description
Within the range of current flow, it can solve the impact of the motor on the power grid when starting, and prolong the service life of electrical devices. Also greatly
Extend the service life of system valves or baffles and reduce equipment operation and maintenance costs.
4. Summary of the experience of inverter use
z A hundred-year plan, safety first
For power generation companies, safe production is the prerequisite and focus of their work. Therefore, power plants are making
In the frequency conversion project, mature technology with advanced technology, reliable equipment and proven in practice should be selected. High pressure change
In the frequency converter market, various products vary in quality. If they have not been fully inspected and verified in advance, they may not
The effect of the period may even come with additional losses. In this regard, some power plants have learned profound lessons. The equipment purchased is not
It can operate reliably, causing accidental shutdown. Bring adverse effects to the normal production of enterprises. Robicon high voltage inverter
After the application of 7-8 in domestic power plants, according to the actual situation in China, we have continuously improved and improved the reliability of products, and we have achieved
General recognition of users. Robicon high-voltage inverters currently used in thermal power plants account for 60% of domestic sales
Above, there is a trend of further expansion.
z Energy saving and consumption reduction, benefit first
Energy saving and consumption reduction is a very important factor in the selection of high-voltage frequency converters in various power plants. Use high voltage frequency conversion
The speed regulating device transforms the boiler fan and water pump. Under the current equipment and technical level of domestic thermal power plants, generally
All investment can be recovered within 3 years, which has been verified in many power plants. But for the investment in energy-saving equipment, in addition to considering
Considering the one-time equipment investment, the operating cost during the installation and long-term operation of the inverter must also be considered.
question. Choosing advanced and reliable products will achieve the goal of reducing operating costs and achieving the lowest overall cost.
z Advanced technology and easy implementation
The energy-saving transformation of equipment should be carried out under conditions that meet or do not affect normal production, which is a partial equipment
Therefore, a large number of changes should not be made to the original system, and the original equipment should be fully utilized to achieve low investment.
The purpose of short cycle and quick results. Using Robicon high voltage inverter can use the motor, cable, high voltage control of the original system
Cabinet making, and the commissioning time of each inverter is less than 5 days (including 1 day of on-site training), the transformation period is the shortest.
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Application Article
Application Article
1. Application examples of Henan Xinxiang Thermal Power Plant
Application of Perfect Harmonic Free Frequency Converter in Fans of Thermal Power Plants
Published: 2002-6-20 10:58:48 Author: (thermal power plant in Xinxiang, Henan, 453011) David Yao
1 Introduction
Due to various reasons, large-scale motors such as feedwater pumps, induced draft fans, and blowers in thermal power plants have serious problems with large horse-drawn vehicles.
For example, due to the need of system peak shaving, the output of the unit must be constantly changing. This is also the reason for the low efficiency of the auxiliary equipment.
The energy-saving transformation of auxiliary equipment in thermal power plants is very important. The installed capacity of Xinxiang Thermal Power Plant is 2×200MW, frequent peak shaving, the above phenomenon
It was very serious. It was decided to change the two blowers of one of the boilers to frequency conversion speed regulation. This is the first time that my country has used high-voltage frequency conversion control technology.
The technology is used on large-capacity blowers exceeding megawatts.
2 Principle and application of high voltage frequency conversion speed regulation
The perfect harmonic-free high-voltage inverter produced by Robicon (ROBICON) (unit series multi-level PWM voltage
Source inverter) is a new type of inverter that directly outputs high voltage. It uses several low-voltage PWM variable frequency power unit strings
The connection method realizes direct high voltage output. The frequency converter has the characteristics of small harmonic components, high power factor and good output waveform quality.
There is no additional heating, torque ripple, noise and other problems of the motor caused by harmonics. The principle is shown in Figure 1.
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Application Article
The 6kV grid voltage is stepped down by an isolation transformer with multiple secondary windings to supply power to the power unit. The power unit is a three-phase input,
Single-phase output AC/DC PWM voltage source inverter structure, adjacent power unit output terminals are connected in series to form a star connection,
Realize the direct output of high voltage with variable voltage and frequency conversion to supply the high voltage motor. Take the 6kV output voltage level as an example, each phase consists of five rated
Power units with a voltage of 690V are connected in series, the main output phase voltage can reach up to 3450V, and the line voltage can reach about 6kV. Change every
The number of phase power units connected in series or the output voltage level of the power unit can achieve high-voltage output of different voltage levels.
Each power unit is powered by a set of secondary windings of the input transformer, between the power units and between the secondary windings of the transformer
Insulate each other. The secondary windings are connected by extension triangles to achieve multiplexing to achieve the purpose of reducing the input harmonic current. for
For a 6kV voltage grade inverter, 15 secondary windings supplying 15 power units are each set in three groups, divided into five different
The phase group, the mutual difference of 120° electrical angle, forms a 30-pulse rectifier circuit structure, and the input current waveform is close to a sine wave, which is equivalent
The split-phase power supply mode reduces the total harmonic current distortion to about 1%, and the total power factor input by the inverter can reach more than 0.95.
3 Frequency converter characteristic test
After the inverter is put into operation, in order to check its performance, the working condition of the inverter is tested in detail under various working conditions.
All meet or exceed the design requirements and meet the operational needs.
1# The blower frequency conversion switch is closed, and the test is performed when the frequency converter output frequency is 20Hz, 30Hz, 40Hz, 47.5Hz,
After comparison, it is found that the output waveform is basically consistent with the background waveform of the 6kV bus voltage when the power frequency of the 1# blower is turned on, and it is not at all frequencies.
Cause the harmonic content of the system to increase, and the total distortion rate of the 6kV bus voltage does not exceed the standard. Table 1 only lists the system voltage waveform after the inverter is switched on
The test results.
In addition to harmonic analysis, we also recorded the system voltage before and after the main frequency converter was put into operation, as shown in Figure 2. From the waveform comparison
Seeing there is no difference, it can be proved that the inverter has a nearly perfect sine wave output, and the harmonics can be ignored.
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Application Article
When the frequency converter is running, in order to test the influence of the large-capacity motor starting on the frequency converter, we start this section of the 6kV bus 6000kW
Test the water pump, as shown in Figure 3. It can be seen from the oscillogram that, in addition to the interruption of about two waveforms of the inverter input current,
There is basically no change in the frequency conversion output, indicating that its work is relatively stable.
4 Energy-saving analysis
(1) The economic analysis of the maintenance cost of the blower.
Stable, can start at zero speed, no overpressure, overcurrent phenomenon, reduced mechanical wear and fan vibration, lower bearing and bearing temperature, lower
Low failure rate during operation, reducing the number of replacements of bearings and bushings after wear and burn, and welding and repairing of end rings during shutdown inspections
Temporary cooling measures taken to prevent bush burning can have a direct economic benefit of about 600,000 yuan.
(2) Economic analysis of energy saving. Statistics on the operation report form. September 1-15, 2000, was the pre-inverter conversion of the blower.
Operating conditions. November 16-30, 2000 is the operation status of the blower after frequency conversion transformation. Moreover, before the reform of the blower, our factory has
Energy-saving measures have been adopted to shut down one blower at 100MW.
It can be seen from Table 2 that the power consumption rate after the transformation is significantly lower than that before the transformation. According to the annual power generation of the 4# unit, 945×106kW·h (calculated
Planning power generation), the electricity price is 0.32 yuan/kW·h calculation, which can save electricity costs:
945×106(1.123-0.54)%0.32=1.7478 million yuan
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Application Article
Combining the above two items, the annual cost savings is about 2.34 million yuan, which shows that the economic benefits are considerable.
5 The advantages of perfect harmonic-free high-voltage inverter
By understanding the characteristics of the frequency converter and its operating conditions, the advantages of using frequency conversion speed regulation are as follows:
(1) Software start can be realized after adopting frequency conversion speed regulation, there is no impact on the power grid and load, and the use of motors and fans is extended
life. When the power supply is interrupted momentarily, the speed can be tracked and started while the motor is still rotating, which greatly reduces the recovery of the motor
time.
(2) The control unit and the power unit adopt high-precision and high-speed optical fiber digital communication to ensure the accuracy and speed of control signal transmission.
It also ensures that the low-voltage control power supply part is well isolated from the high-voltage power supply part. When a power unit fails,
It can be isolated by a bypass system and maintain operation while reducing the load capacity.
(3) It has reliable protection performance. The transformer has overvoltage, undervoltage, phase loss, output grounding, output short circuit, overcurrent, and overload protection
Protection, cabinet door opening, high voltage switch after power failure, power unit fault diagnosis and other functions. There is a liquid crystal display on the cabinet door, which can
Set function parameters directly through the keyboard, the controller has various fault diagnosis, adjustment and logic function configuration, keyboard operation and display
Show and other functions.
(4) The frequency converter has high power factor, high efficiency and high quality output. The power factor can generally exceed 0.95 and the efficiency can reach 96%.
Above, because the inverter adopts multiple pulse modulation design, the output waveform is similar to sine wave at full speed, and the harmonic distortion is
The current is 0.8%, the voltage is 1.2%, and the overload capacity is 110%. (5) Inverter speed adjustment range: 0~100% continuously adjustable, frequency output 0~120Hz, acceleration/deceleration time 0.1~3200s, frequency accuracy
±0.5%.
6 Conclusion
Through the transformation of the 1250kW blower using the inverter control for the first time and the above analysis, it shows that the inverter has excellent performance and energy saving efficiency.
The rate is obvious and can be promoted.
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Application Article
2. Shanghai Wujing Power Plant:
Application examples of perfect harmonic-free frequency converter in power plant pump load
The 2x300MW units of Shanghai Wujing Power Plant are equipped with 4 circulating water pumps. The circulating water pump was originally provided by Changsha Water Pump with 4 impellers.
Tuned water pump. The model is 7ZLKXA-16.5, the motor power model is YL1600-16/2500-1, and the basic parameters of the motor are as follows:
Motor power: 1600KW, motor voltage: 6KV
Motor speed: 370r.p.m Motor current: 199A
Protection class: IP23 Insulation class: Class B
Due to the many problems in the use of this pump, Wujing Power Plant, after multiple demonstrations, introduced its circulating water pump system in 2001.
Line transformation. In this transformation process, the pump produced by Shanghai KSB Pump Co., Ltd. was used to replace the old pump with adjustable impeller.
The model is: SEZ-1800-1400/1100, the output power of this pump is 1250KW. After comprehensive consideration during the transformation, only the water pump was replaced, and then
Continue to use the original motor.
The renovation was completed in 2001 and achieved the expected purpose.
1. Necessity of frequency conversion transformation of circulating water pump system
The circulating water pump of the power plant is designed according to the maximum load and extreme temperature conditions, and a certain safety margin is also considered.
the amount. Therefore, the total water supply volume of the circulating water pump system is always greater than the circulating water volume required by the boiler system.
Due to changes in the generating load of the unit, changes in the external climate, and circulating water pumping
The change of the nozzle water level requires circulation
The water volume changes accordingly to maintain a reasonable rate to ensure that the gas turbine can be in the most favorable vacuum state to improve the entire system
Operating efficiency.
By installing a frequency converter on the circulating water pump, according to changes in external conditions, the water supply of the circulating water pump can be adjusted to meet
And improve the operating efficiency of the system. At the same time, the speed of the water pump is reduced, and the electric energy consumed by the motor is also reduced.
Under the premise of demand, it can save energy and has good economic benefits. According to the general experience of using inverters in power plants,
The benefits of electricity can fully recover the investment in frequency conversion transformation in about 3 years. Moreover, the design life of Robicon inverter device is 20
In addition, the daily maintenance workload of the inverter is small and the operating cost is low. Therefore, the use of the inverter is
It is absolutely necessary. After using the frequency converter, it also brings the following additional benefits:
z After adopting the inverter, the starting mode of the motor is soft start, which has no impact on the motor and can greatly extend the use of the motor.
The service life eliminates the "water hammer" effect of the water pump during the motor starting process, and reduces the maintenance cost of the motor and the water pump (100,000 yuan per year).
Yuan count).
z After adopting the frequency converter, it realizes the soft start and eliminates the impact on the power grid. Can improve the power factor of the motor operation, up to
To 0.9 or higher.
z After adopting the frequency converter, simplify the operation, improve the automation control level, and improve the system efficiency.
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Application Article
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2. Energy saving principle of frequency converter
(1) Single pump system
It can be known from the principle of electrical machinery that the speed of a three-phase AC asynchronous motor is proportional to the input frequency of the motor. For specific electricity
As long as the operating frequency of the motor is changed, the speed of the motor can be adjusted. This is the basic principle of variable frequency speed regulation. For centrifugal wind
For mechanical water pump loads, the relationship between its speed, head and power is as follows:
Flow rate: Q ∝ n
Pressure: H ∝ n 2
Power: P ∝ n 3
0 100%
Under the condition that the process is satisfied, the flow rate is appropriately reduced to ensure a certain pressure, and considerable power saving effects can be obtained. Theoretically
It is calculated that if the allowable flow is reduced by 1/8, the power consumed by the motor will be reduced by 1//2. The energy-saving effect of frequency converter used in fan and water pump is particularly
obvious.
(2) Multi-pump parallel system
If in a multi-pump parallel system, if each pump is equipped with an inverter, everyone will adjust the speed at the same time, and the system will be the total. The water
The relationship between pump flow, head and output power follows the above-mentioned law.
However, in a multi-pump parallel system, if several pumps are put into operation at the same time, one of the pumps is controlled by the inverter.
Otherwise, the relationship between the pump flow, head and output power will not follow the above rule. Because the pressure of the system is provided by a fixed-speed pump
Yes, the pressure of the speed control pump must be equal to the pressure of the system before the pump can open the one-way valve at the pump end to supply water to the system. Adjust by frequency converter
The speed of the whole water pump can be adjusted linearly to adjust the flow rate of the water pump, but the power will not decrease in a cubic relationship, and it will decrease almost linearly.
Therefore, the power saving effect is not as good as the effect of single pump frequency conversion and each pump plus frequency conversion. Electricity saving is directly related to the amount of water regulation. by
Because the pipe section of the system is fixed, the flow rate is reduced, which can greatly reduce the resistance of the system and save more energy.
Pressure~n
2
Power~ n
3
100%
Flow~n
Application Article
3. Zhejiang Zhenhai Power Plant
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Application Article
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Application Article
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Application Article
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Application Article
4. Shengli Power Plant
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Application Article
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Application Article
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Application Article
5. Shanghai Minhang Power Plant
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Application Article
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User report and certification
User report and certification
Robicon’s perfect harmonic-free high-voltage inverter has been fully affirmed by users in practical applications.
The relevant reports and certifications of some users are listed below.
1. Zhenhai Power Plant
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User report and certification
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User report and certification
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User report and certification
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User report and certification
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User report and certification
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User report and certification
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User report and certification
2. Minhang Power Plant
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User report and certification
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User report and certification
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User report and certification
3. Xiahuayuan Power Plant
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User report and certification
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User report and certification
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User report and certification
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User report and certification
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User report and certification
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User report and certification
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User report and certification
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User report and certification
4. Shengli Power Plant
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 53
User report and certification
5. Huaneng Daqing Xinhua Power Plant
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 54
User report and certification
6. Beijing Ninth Water Plant
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 55
User report and certification
7. Linjiang Water Plant of Shanghai Tap Water Pudong Co., Ltd.
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 56
User report and certification
8. Suzhou Industrial Park Qingyuan Water Industry Co., Ltd.
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 57
Application performance
Robicon Shanghai Representative Office No. 460 Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 58
List of some domestic users of perfect harmonic free inverter
Username Power Voltage Quantity Load
1250KW 6000V 4 induced draft fan
Daqing Huaneng Xinhua Power Plant
2300KW 6000V 1 circulating water pump
Shanghai Minhang Power Plant #9 Unit 750KW 6000V 2 Fan
Shanghai Minhang Power Plant #8 Unit 750KW 6000V 2 Fan
Shanghai Minhang Power Plant #10 Unit 750KW 6000V 2 Fan
500KW 6000V 1 Ash washing water pump
500KW 6000V 2 Primary fan
500KW 6000V 2 Primary fan
600KW 6000V 1 Mortar pump
600KW 6000V 1 water pump
Qingdao Power Plant
1000KW 6000V 2 Condensate pump
Sanmenxia Power Plant 1600KW 6300V 2 induced draft fan
Shandong Dezhou Power Plant 2000KW 6000V 2 Fan
Shandong Yantai Power Plant 560KW 6300V 2 Fan
2000KW 6300V 2 fan
Shandong Weifang Power Plant
1000KW 6300V 2 blower
Shandong Zibo Zhangdian Thermal Power Plant 2000KW 6000V 1 Water pump
600KW 6000V 1 circulating water pump
Shandong Weihai Power Plant
560KW 6000V 2 blower
Shandong Laicheng Power Plant 1250KW 60000V 2 Primary fan
Fushun Power Plant 1250KW 6000V 2 Fan
Henan Xinxiang Power Plant 1500HP 6300V 2 induced draft fan
Shengli Power Plant 1400KW 6000V 2 fan
Shanxi Yushe Power Plant 710KW 6000V 2 Fan
Xiahuayuan Power Plant 550KW 6000V 2 induced draft fan
Zhenhai Power Plant 1400KW 6000V 2 induced draft fan
Jiangsu Xutang Power Plant 1400KW 6000V 4 Primary fan
Application performance
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 59
Sichuan Gaoba Power Plant 1400KW 6000V 2 induced draft fan
Hainan Haikou Power Plant 800KW 6000V 2 induced draft fan
Jiangxi Xinyu Power Plant 1600KW 6000V 1 water pump
Hunan Shimen Power Plant 630KW 6000V 1 Slag flushing water pump
Jiangsu Xiagang Power Plant 1000KW 6000V 2 Condensate pump
Tianjin Dagang Power Plant 1600KW 6000V 3 fan
Tianjin Junliangcheng Power Plant 1400KW 6000V 4 Fan
Tianjin Guohua Panshan Power Plant 500KW 6000V 1 Condensate pump
China South China Sea Eastern Petroleum Exploration Company 750KW 4160
V 31 electric submersible pump
Phillips China Petroleum XJ-24 platform 500HP-650HP 3300V-4160V 4 electric submersible pump
Phillips China Petroleum XJ-24, XJ-30 platform
650HP 4160V 6 electric submersible pump
Changqing Jingxian pipeline 1650KW 4160V 2 oil pump
Xinglongtai Oil Production Plant of Liaohe Oilfield 750KW 6000V 1 Water injection pump
850KW 6000V 1 oil transfer pump
Liaohe Oilfield Oil and Gas Gathering and Transportation Company
1000KW 6300V 1 oil transfer pump
Fushun Petrochemical Company No. 2 Petroleum Plant 1600KW 6000V 1 Water pump
2200KW 6000V 3 water pump
Shengli Oilfield
1000KW 6000V 1 water pump
Daqing Oilfield 522KW 6000V 2 oil pump
315KW 6000V 2 water pump
Hohhot Yellow River Diversion Project
560KW 6000V 2 water pump
Shanghai Dachang Water Plant 1350KW 3300V 2 Water pump
Suzhou Singapore Industrial Park Pumping Station 680KW 3300V 2 Intake pump
1600KW 6000V 2 sewage pump
1000KW 6000V 2 Sewage pump Shanghai Confluence Sewage Phase II Project
1100KW 6000V 2 sewage pump
2550KW 6000V 2 water intake pump
Beijing Water Source No. 9 Factory
1550KW 6000V 1 water distribution pump
Application performance
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 60
Shanghai Linjiang Water Plant 1000KW 6000V 1 water pump
Dongguan Fourth Water Plant 1250KW 4160V 2 Water pump
Dongguan Fifth Water Plant 1700KW 4160V 3 water pump
Baotou Steel Water Plant 1600KW 6000V 1 water pump (synchronous machine)
Suzhou Qingyuan Water Industry 630KW 6000V 1 water pump
720KW 6000V 1 water pump
Yibin Wuliangye Winery Water Supply
250KW 6000V 1 water pump
Shanghai Jinshan Petrochemical Second Chemical Plant 550KW 6000V 1 Water pump
Tianjin Petrochemical Water Plant 630KW 6000V 1 water pump
Zhenhai Refinery 400-800KW 6000V 4 fan
Shanghai Refinery 2800KW 6000V 1 compressor
Yanshan Petrochemical 630KW 6000V 1 compressor
Guangzhou Petrochemical 441KW 6000V 1 water pump
900KW 6000V 1 fan
Taiyuan Gas Project
630KW 6000V 1 fan
Asia Cement Plant 500KW 3300V 1 fan
Shanghai Baosteel Co., Ltd. 300KW 3000V 2 water pump
Meishan Iron and Steel Plant 1000KW 6000V 1 fan
Nanjing Iron and Steel Plant 3500KW 7200V 2 Descale water pump
Tonghua Iron and Steel Plant 800KW 7200V 2 fan
Changzhi Iron and Steel Plant 500KW 7200V 2 Fan
Xingtai Iron and Steel Plant 800KW 6000V 3 fan
Wuhan Iron and Steel Plant 500KW 6000V 2 Fan
Beijing Capital Iron and Steel Plant 1000KW 6000V 1 Coking fan
Liuzhou Iron and Steel Company 630KW 6000V 1 blower
Harbin Wind Tunnel Project 9500KW 6000V 1 fan
Baotou Steel's Second Steelmaking Plant 2500HP 6600V 1
Secondary dust fan
(Synchronous machine)
Product Certificate
Product Certificate (ISO9001)
Robicon Shanghai Representative Office No. 460, Gaoxiang Ring Road, Pudong, Shanghai Tel: 021-58843308 Fax: 021-58842538 Page 61
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