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.
- Patented topology
- Flexibility of installation
- Industry-leading performance
- Enhanced reliability and efficiency
- Reduced cost of ownership
- Simplified serviceability
- Dependable safety
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.
- 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
- Modular power cell based inverter
- 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
- Non-modular integrated inverter
- 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.
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.
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
Click here to learn more about Benshaw’s M2L Series Medium Voltage Variable Frequency Drives and accessories.