Benshaw MVH2 and M2L Series Medium Voltage Variable Frequency Drives

MVH2 Series VFDs

Benshaw MVH2 Series Medium Voltage Variable Frequency Drives utilize H-Bridge multi-level and overlapping wave technology for low harmonic content and a nearly perfect sine wave output. Full-size performance … in a compact design!

Benshaw MVH2 Series Medium Voltage Variable Frequency Drive

The latest in phase-locked loop technology is used to adjust drive output … providing an ideal solution for soft start, speed control, energy savings and intelligent control of any MV induction or synchronous motor. Offering the performance of a full-size standard drive in a small footprint layout, MVH2 Series drives are ideal for retrofit projects or any installation with space constraints.

UL Listed to 1,250HP @ 4,160V

NEMA 1 forced air, front access, welded enclosure

Fully integrated package: Load break fused disconnect; Inline contactor; Built in dry type transformer

V/Hz, open or closed loop, vector control

Door-mounted touch screen HMI

No cable length restrictions

IEEE 519 compliant

MVH2 Series VFDs can be used standalone (standard configuration) or integrated into an MCC (optional).

Click here to learn more about Benshaw’s MVH2 Series multi-purpose Medium Voltage Variable Frequency Drives and accessories.

M2L Series VFDs

Our M2L Medium Voltage Variable Frequency Drive family provides the utmost in performance, reliability, serviceability and safety. The M2L Series is designed for versatility, with numerous installation configurations available to suit environmental conditions, providing significant cost savings and reduced total cost of ownership.

Benshaw M2L Medium Voltage Variable Frequency Drives feature a unique, patented topology, with independent transformer, rectifier and inverter sections, allowing Benshaw to offer flexible packaging options to accommodate a wide range of project-specific requirements and limitations.

Benshaw’s modular, power-cell-based M2L inverters use the most reliable components available … such as low voltage IGBTs and dry-type film capacitors … and they are equipped with the latest in safety features, including a fast and reliable arc flash detection system. This topology, along with the M2L’s advanced remote monitoring system, helps minimize down-time and simplify integration with other drive system components.

The M2L Medium Voltage Variable Frequency Drive family spans a power range from 300 HP to 12,000 HP, operating at industry-standard medium voltages up to 7.2kV and accepting up to a 35kV input. Redundant fans are included in the standard design.

Benshaw M2L Series Medium Voltage Drives

Patented topology

Flexibility of installation

Industry-leading performance

Enhanced reliability and efficiency

Reduced cost of ownership

Simplified serviceability

Dependable safety

Reliability

The M2L’s architecture differs radically from other multi-level systems in the market today. The drive consists of three independent components:

Multi-pulse phase-shifting transformer

Modular, power-cell-based multi-level inverter

Multi-pulse diode-based rectifier

This design makes a common bank of capacitors for energy storage and filtering unnecessary, eliminating the need for multiple rectifier-capacitor combinations in individual inverter power modules. DC power is fed to the M2L inverter from a standard transformer — which can be located remotely from the inverter — via bridge rectifiers. Power is provided to the DC link as a whole via the DC voltage terminals, not individually fed to each module. Link energy storage is distributed among identical power modules that comprise the M2L inverter rather than relying on capacitors for energy storage. This arrangement greatly reduces arc flash potential and substantially improves reliability. Utilizing a standard transformer and rectifier minimizes the component count as well as the number of cable connections required.

Customer Benefits

Benshaw

Standard multi-pulse isolation transformer

Limited number of secondary cables

Standard multi-pulse rectifier

Lower component count

Distributed DC link energy storage

Low energy density

Film capacitors

Proven reliable

Modular power cell based inverter

Isolated faults

Reliable LV (1700V) IGBTs

Typical failure in time rate of 100*

Other Solutions on the Market

Complex integrated multi-winding transformer

Numerous secondary cables

Complex power cell integrated rectifiers

Unnecessarily high component count

Concentrated energy storage

High energy density

Electrolytic capacitors

Proven unreliable

Non-modular integrated inverter

Cascading failures

Less reliable HV (6500V) IGBTs

Typical failure in time rate of 4001

* Failure in time (FIT) rate of a device is the number of failures that can be expected in one billion device-hours of operation.

Serviceability

Simple and fast maintenance is ensured through front access only design and advanced diagnostic tools such as Benshaw Connect and the GMC® remote monitoring system. Benshaw Connect provides intuitive, user-friendly access to operational and conditional data, trends and event logs as well as control and motor parameters. The GMC® remote monitoring system provides secure access to the drive and insights into its performance and condition. This system enables end users to rely on Benshaw’s expertise and receive immediate support during unexpected situations.

Safety

Your workforce, application and equipment are all protected through a safe design that features a reduced arc flash footprint and unique and standard arc flash detection system. Remote HMI allows personnel to operate the drive while away from medium voltage.

Inherently lower arc flash footprint

Greatly reduced fault currents

Distributed energy storage and isolated faults

Arc flash detection in power cells