一种基于磁链傅里叶级数模型的开关磁阻电机转子位置估计方法

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关键词：开关磁阻电机；转子位置估计；磁链傅里叶级数模型；快速延时信号消除DOI：10.15938/j. emc.2025.11.003中图分类号：TM352 文献标志码：A 文章编号：1007-449X（2025）11-0025-10

Rotor position estimation method for switched reluctance motor based on flux linkage Fourier series model

LI Zhengnan， ZHANG Wei， GUO Qichen（College of Electrical Engineering，Zhejiang University，Hangzhou 31OO27，China）

Abstract：To address the issue of dependence on motor flux linkage characteristic curves in sensorless control of switched reluctance motors （SRMs） during medium and high speed operation，a rotor position estimation method for SRMs based on the flux linkage Fourier series model was proposed.Firstly，discontinuous calculated flux linkage was obtained through integration. Secondly，a flux observer based on the fast delayed signal cancellation method was constructed to eliminate the DC bias and allharmonics below the 5Oth order in the calculated flux linkage，yielding a fundamental flux component with clear position information. Thirdly，by analyzing the discontinuity of the calculated flux linkage and the phase shift introduced by the flux observer，the phase relationship between the fundamental flux component and the rotor position was clarified.Finaly，the estimated rotor position and speed were obtained via a phaselocked loop （PLL）and the effectiveness of the proposed method was verified by simulation analysis and experimental results. The experimental results show that the rotor position estimation error does not exceed 2.4∘ during no-load steady-state operation， does not exceed 2.6∘ during sudden load application， and does not exceed 3.1∘ during sudden speed changes.

Keywords：switched reluctance motor; rotor position estimation； flux linkage Fourier series model； fastdelayed signal cancellation

0引言

开关磁阻电机（switchedreluctancemotor，SRM）结构简单，鲁棒性强，成本低廉，不需要使用稀土元素，适用于各种环境恶劣的工作场景，近年来越来越多地应用于电动汽车、航空航天、家用电器等诸多领域[1-5]。（剩余12231字）