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An Efficient Method to Determine the Phase Current Commands of SR Motors for Minimum Torque Ripples  

Kim, Chang-Hwan (Dept. of Electronic Eng., Daejeon University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.49, no.4, 2012 , pp. 78-89 More about this Journal
Abstract
The generated torque of a switched reluctance(SR) motor is highly nonlinear, which makes it difficult to determine the reference current commands for minimum torque ripples. In this paper, we present a computationally simple and efficient method to minimize torque ripples of SR motors based on iterative learning control. The reference current command of each phase minimizing torque ripples is identified in 2-dimensional look-up table form. Our learning control algorithm does not require the torque model, so our method is not affected by model errors and hence is very accurate. In order to justify our work, we present some computer simulation results.
Keywords
SR motor; reference current commands; minimizing torque ripples; iterative learning control; 2-dimensional look-up table;
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