Novel Rotor Surface Profile Control Method for Minimizing Position Error in VR Resolvers by Harmonic Injection

초록

This paper presents an analytical approach to identify the harmonic order of permeance harmonics that affect the position error of a VR resolver based on slot-pole combinations. We apply this technique to identify the dominant permeance harmonic components and propose a novel method to mitigate the position error by incorporating their harmonic coefficients into the rotor airgap function. To evaluate the effectiveness of different optimization techniques for minimizing the position error, we compare the results of applying golden section search and global optimization techniques. A finite element analysis (FEA)-based design optimization is performed to verify the effectiveness of the proposed method, and a 98% reduction in position error is achieved compared to the design without injecting harmonic coefficients.

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