Rotating electric machine system
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United States of America Patent
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Jul 17, 2018
Grant Date -
Jan 18, 2018
app pub date -
Jul 17, 2017
filing date -
Jul 15, 2016
priority date (Note) -
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Abstract
A rotating electric machine system includes a rotating electric machine and an electric power conversion circuit. The rotating electric machine includes N coils connected with each other to define a neutral point therebetween. The electric power conversion circuit includes N high-side switches, N low-side switches, a selector switch, a full-wave driver, a half-wave driver and a drive controller. The full-wave driver performs a full-wave drive process with high potential-side terminals of the low-side switches respectively connected with low potential-side terminals of the high-side switches by the selector switch. The half-wave driver performs a half-wave drive process with the high potential-side terminals of the low-side switches connected with the neutral point by the selector switch. The drive controller controls both the full-wave driver and the half-wave driver to selectively cause either the full-wave driver to perform the full-wave drive process or the half-wave driver to perform the half-wave drive process.
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