基于高频脉振电压信号注入的IPMSM低速无位置传感器控制OA
Position sensorless control of IPMSM at low speeds based on high-frequency pulsating voltage signal injection
在低速工况下,由于反电动势幅值(back-EMF)显著衰减,传统基于back-EMF观测的内置式永磁同步电机(IPMSM)无位置传感器控制存在估计精度不足、稳定性差的问题.为此,该文提出一种基于最小均方(LMS)自适应滤波的改进型高频(HF)脉振电压注入法.该方法通过估计转子参考坐标系的直轴注入HF电压信号,并利用LMS自适应算法对HF电流响应进行实时解调,有效抑制谐波干扰,准确提取转子位置与转速信息.仿真与实验结果表明,该文方法在低速范围内可实现转子位置的精确跟踪,位置估计误差小于 0.25 rad,动态响应速度提升约40%,且在转速突变工况下仍保持良好鲁棒性.
Position sensorless control of interior permanent magnet synchronous motor(IPMSM)based on conventional back-electromotive force(back-EMF)observers often suffers from degraded estimation accuracy and poor stability at low speeds due to the diminishing back-EMF amplitude.To mitigate this limitation,this paper proposes an enhanced high-frequency(HF)pulsating voltage injection strategy integrated with a least mean square(LMS)adaptive filter.By injecting an HF pulsating voltage into the d-axis of the estimated rotor reference frame,the proposed method leverages the LMS adaptive algorithm to demodulate the HF current response,suppressing harmonic disturbances,enabling precise extraction of the rotor position and speed.Both simulation and experimental results verify that the proposed strategy achieves accurate rotor tracking within the low-speed region.Notably,the position estimation error is restricted to within 0.25 rad,with a dynamic response speed improvement of approximately 40%,demonstrating superior robustness against speed fluctuations.
秦亚茹;霍永力;杨贝宁;王明玉;朱曙光
南京理工大学 新能源学院,江苏 无锡 214000南京理工大学 新能源学院,江苏 无锡 214000南京理工大学 新能源学院,江苏 无锡 214000南京理工大学 新能源学院,江苏 无锡 214000南京理工大学 新能源学院,江苏 无锡 214000
信息技术与安全科学
永磁同步电机无位置传感器控制高频脉振电压信号注入低速
permanent magnet synchronous motorposition sensorless controlhigh-frequency pulsating voltage signal injectionlow-speed
《南京理工大学学报（自然科学版）》 2026 (1)
40-50,11
国家自然科学基金青年基金(52302454)中央高校基本科研业务费专项资金(30925010537)
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