Abstract：In this paper, the magnet skewing structure is adopted to reduce the cogging torque in permanent magnet drive. The analytical method is used to give the expression of the cogging torque. The quadratic polynomials are employed to construct response surface model based on the response obtained by the Ansys software and the central composite design (CCD) experiment method. Based on this model, the minimal cogging torque is taken as the optimal objective, and then the particle swarm optimization (PSO) algorithm is used to perform optimization and obtain the optimal structure parameters of the PMD. At last, the permanent magnet drive with magnet skewing structure is analyzed and optimized with above method. The results verify that the cogging torque can be notably reduced with this optimization method.
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2015, Vol. 30 
