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基于磁饱和下电感特征点的开关磁阻电机无传感器控制

Sensorless control of switched reluctance motor based on inductance characteristic point under magnetic saturation.

作者信息

Cai Hui, Fan Yuhua

机构信息

School of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha, 410114, Hunan Province, China.

出版信息

Sci Rep. 2025 Jan 2;15(1):302. doi: 10.1038/s41598-024-82482-9.

DOI:10.1038/s41598-024-82482-9
PMID:39747982
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11696007/
Abstract

This paper presents a method of rotor position estimation for switched reluctance motors suitable for saturation. The effects of saturation as well as voltage changes are taken into account at the same time. It is based on the inductance in the unsaturated region. When the phase inductance is equal to the threshold, it is defined as a characteristic point. Meanwhile the characteristic pulse signal is triggered. Different inductance intersection thresholds are determined when the phase current and bus voltage change. The rotor position is estimated by interval speed. Compared with the traditional inductance method, the position estimation error is smaller. Finally, the correctness and effectiveness of the proposed method are verified by simulation and experiments.

摘要

本文提出了一种适用于饱和状态的开关磁阻电机转子位置估计方法。同时考虑了饱和效应以及电压变化的影响。该方法基于不饱和区域的电感。当相电感等于阈值时，将其定义为一个特征点。同时触发特征脉冲信号。当相电流和母线电压变化时，确定不同的电感交叉阈值。通过区间速度估计转子位置。与传统电感法相比，位置估计误差更小。最后，通过仿真和实验验证了所提方法的正确性和有效性。

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