Abstract
In this paper, the three-phase current ripples and also the torque ripple of a surface-mounted permanent magnet synchronous motor (SPMSM) were thoroughly analyzed and minimized based on variable switching frequency PWM (VSFPWM) method. The basic SPMSM model is developed and simulated using MATLAB/SIMULINK environment. For control the torque ripple, VSFPWM method was applied with its control diagram, which consists of a torque ripple calculation module and switching period updating module. Effectiveness of the presented control method are verified, some of the obtained simulation results are discussed, and the comparison of switching frequency caused by different PWM method is analyzed.
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