Three-phase switched reluctance motor torque ripple two-level suppression method
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United States of America Patent
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Feb 27, 2018
Grant Date -
Aug 3, 2017
app pub date -
Aug 19, 2015
filing date -
Aug 27, 2014
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Abstract
A three-phase switched reluctance motor torque ripple two-level suppression method. A first set of torque thresholds at rotor position interval [0°, θr/3]. A second set of torque thresholds at rotor position interval [θr/3, θr/2]. Power is supplied for excitation. The power supplied for excitation to phase A leads the power supplied for excitation to phase B by θr/3. Phase A is turned off, while phase B is turned on. An entire commutation process from phase A to phase B is divided. In rotor position interval [0°, θ1], phase A uses the second set of torque thresholds while phase B uses the first set. Critical position θ1 automatically appears in the commutation process. Total torque is controlled. In rotor position interval [θ1, θr/3], phase A uses the second set of torque thresholds, phase B uses the first set, and the total torque is controlled, suppressing torque ripples of a three-phase switched reluctance motor.
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