Gm Global Technolgoy Operations, Inc.

Steven E Schultz

Alan G Holmes

Silva Hiti

Brian A Welchko

William R Cawthorne

Michael J Grimmer

John P Miller

A method of controlling a power inverter coupled to an electric motor in a vehicle powertrain having an engine is provided. The method includes generating a voltage waveform signal and a switching frequency signal for the inverter via a controller. At least one of the voltage waveform signal and the switching frequency signal is at least partially based on at least one commanded engine operating parameter. For example, the engine on/off state, engine torque, and engine speed can be considered. A vehicle having a controller configured to implement the method is also provided.

Inverter control method and vehicle having same

Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. A signal controlling the power inverter is modified utilizing a first voltage distortion compensation method if a modulation index of the signal is less than a first modulation index value. The signal is modified utilizing a second voltage distortion compensation method if the modulation index is at least equal to the first modulation index value.

Method and system for controlling a power inverter in electric drives

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Torrance, CA, United States of America

Steven E Schultz