Switching strategy for switched reluctance machine
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United States of America Patent
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Jan 7, 2014
Grant Date -
Jun 13, 2013
app pub date -
Dec 9, 2011
filing date -
Dec 9, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method of controlling a motor is provided. The method may determine a speed of the motor, and engage a soft chopping routine on a first switch and a second switch of each phase if the motor speed is relatively low. The first switch may be driven by a first pulse width modulated PWM signal and the second switch being driven by a second PWM signal. The first and second PWM signals may be alternatingly configured such that at least one of the first switch and the second switch is closed at any point during the distributed soft chopping routine and both the first switch and the second switch are never simultaneously open.
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