TMEIC TMdrive-MVG2 Medium Voltage AC Drives

High-Power Performance with Compact Efficiency

The TMdrive-70 is a rugged, water-cooled, fully digital vector-controlled drive

system designed for high-demand applications requiring precise speed and torque

control. Utilizing advanced IEGT (Injection Enhanced Gate Transistor) switching

technology, the drive delivers high power density and system efficiency while

maintaining a compact footprint. Its modular converter, inverter, and cooling

unit design allows for flexible installation, lower floor space requirements, and

reduced infrastructure costs—making it ideal for applications ranging from metal

mills and compressors to grinding mills and mine hoists.

Flexible Architecture and Scalable Power Conversion

Engineered for versatility, the TMdrive-70 supports both induction and synchronous

motors and offers a choice between active regenerative or diode-based

non-regenerative AC-to-DC converters. Available in power levels from 5.000 to

40.000 kVA at 3.3 kV, it meets stringent IEEE-519-1992 harmonic guidelines while

integrating seamlessly with TMEIC’s control ecosystem, including the PP7 processor

and TMdrive Navigator tool. With scalable inverter and converter configurations—

including parallel arrangements of the TMdrive-D70 and TMdrive-P70—the TMdrive-

70 delivers unmatched control, flexibility, and reliability for high-capacity operations.

The TMdrive-DCe2 is a family of DC system drives for new and

retrofit applications.

Customer Benefit

• High-speed switching coupled with the three-level power bridge delivers a smooth sine

wave to the motor and power system.

• Low on-state IEGT voltage yields high efficiency.

• Motor and Power System Friendly Higher chopping frequency lowers the torque ripple

in the motor and load, and lowers harmonics fed back into the power system.

• Low power level voltage switched gate circuit has far fewer components than IGCT

current-controlled gate, increasing inherent reliability.

• Harmonics fed back into the power system are reduced to less than IEEE-519-1992

recommendations with no filters

• Reduced footprint, saving valuable factory floor space

• Modular design of power bridge, with each phase leg having its own set of quick

disconnects

• Minimizes maintenance time.

• Reduces required spares and increases spares' availability.

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