Abstract
To solve the severe torque ripple problem of switched reluctance motor(SRM), this paper firstly analyzes the causes of torque ripple of SRM and measures the torque ripple waveform by experiment, and then proposes one torque ripple minimization of SRM based on peak-valley complementary principle method. Two sets of motor subsystems with the same stator and rotor parameters are used to generate two symmetrical torque ripple waveform whose electrical degrees of phase difference is 180. Based on this method, the superposition of these two torque ripple outputting to the load can offset the torque ripple of SRM. Accordingly, this paper also proposes a design scheme of SRM body, which the two sets of SRMs are embedded into one integral motor system. In this motor system, the two sets of stator pole positions are the same, while the rotor pole positions are shifted by a certain angle to obtain the torque ripple waveforms with a phase difference of 180 degrees, at the same time the two SRMs need to have the same direction, speed and power to run. Finally, the practicability and effectiveness of the above-mentioned method can be verified through the simulink simulation and experiment.
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