Control of six step pulse width modulation with flux weakening
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United States of America Patent
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May 15, 2018
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app pub date -
Apr 20, 2017
filing date -
Apr 20, 2017
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Abstract
An electric machine assembly includes an electric machine having a stator configured to have a stator current and a controller configured to receive a torque command (T). The controller stores a modulation flag (Fm) and a six step active flag (FS), each having a respective status. The controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling a six step pulse width modulation operation in the assembly. The controller is programmed to determine the respective status of a six step active flag (FS) based at least partially on the torque command (T) and the respective status of the modulation flag (Fm). The controller is configured to control at least one operating parameter of the electric machine based at least partially on the respective status of the six step active flag (FS).
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