Frequency Domain Finite-Element Analysis of Variable Reluctance Resolver
Zheng Li, Longfei Xiao, Chao Bi · 2018
The rotor shape of variable reluctance (VR) resolver is complicated, and this leads the optimization of the resolver be difficult. In the paper, a model for describe the air-gap with Fourier series is presented. This model can reduce significantly the number of parameters for optimizing and simplify the optimization procedure. Using the Fourier series, Taguchi optimization method can combine with frequency domain finite element method (FEM) to explore the optimal rotor shape for achieving the minimum total harmonic distortion THD of the induced voltage in the signal windings. In the optimization, frequency domain FEM is used to calculate the sample design and verify the proposed design from Taguchi analysis. 5-pole pairs VR resolver are used as example to show the optimization procedure and results.