Rockwell Automation Technologies Incorporated

Richard L Piekarz

Yuan Xiao

Ehsan Al-Nabi

Ye Zhang

The disclosed examples provide an easy and low-loss solution to reduce voltage stress on motor and cable in inverter-fed motor systems by suppressing resonances on the motor cable with apparatus coupled between the inverter output and the motor cable. Disclosed examples include various methods to mitigate voltage stress on both motor and cable, including an output filter circuit with a cable side parallel RL circuit between an inverter output and a motor cable, and an inverter to provide an inverter output signal to the output filter circuit to drive a load through the motor cable, where the cable side parallel RL circuit includes a resistor coupled in series between the inverter output and the motor cable, and an inductor connected in parallel with the resistor.

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Kitchener, Canada

Richard L Piekarz