Power conversion control device, power conversion control method, electric motor, and vehicle driving system
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United States of America Patent
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Jul 5, 2016
Grant Date -
Aug 21, 2014
app pub date -
Sep 30, 2011
filing date -
Sep 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A power conversion control device includes a modulation-wave generating unit generating a modulation wave based on output voltage phase angle command and modulation factor, a carrier-wave generating unit that, in a case of non-overmodulation state, generates a triangular wave or saw-tooth wave as the carrier wave, and, in a case of overmodulation state, generates, as the carrier wave, a signal fixed to −1 in a first section that is a predetermined range centering on timing corresponding to a peak position of the modulation wave, generates, as the carrier wave, a signal fixed to +1 in a second section obtained by shifting the first section by a half cycle of the modulation wave, and generates, as the carrier wave, a triangular wave or saw-tooth wave in remaining third section, and a comparing unit that compares the carrier wave and the modulation wave and generates a switching signal.
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