电工技术学报  2018, Vol. 33 Issue (15): 3547-3555    DOI: 10.19595/j.cnki.1000-6753.tces.170865
电机与电器 |
基于旋转高频电压注入的永磁同步电机转子初始位置辨识方法
杨健1, 杨淑英2, 李浩源2, 张兴2
1. 合肥工业大学智能制造技术研究院 合肥 230009;
2. 合肥工业大学电气与自动化工程学院 合肥 230009
Initial Rotor Position Estimation for IPMSM Based on High Frequency Rotating Voltage Injection
Yang Jian1, Yang Shuying2, Li Haoyuan2, Zhang Xing2
1. Intelligent Manufacturing Institute Hefei University of Technology Hefei 230009 China;
2. School of Electrical Engineering and Automation Hefei University of Technology Hefei 230009 China
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摘要 内置式永磁同步电机(IPMSM)广泛采用旋转高频注入法辨识转子初始位置,但其辨识精度受到数字控制采样和计算延时、PWM输出延时以及信号解调过程中滤波器环节产生的相位延时等因素的影响。该文在对各因素产生的影响进行分析的基础上提出一种统一补偿算法。该补偿算法利用相关影响因素对正序电流和负序电流产生相位影响所具有的相关性,通过提取正序电流信号中的相位偏差,对负序电流信号的相位进行统一补偿,以提高位置观测精度。为区分转子磁极极性,提出基于电流闭环控制的饱和电感量极性判断方法。该方法在极性辨识过程中,为使电机处于静止状态,将交轴(q轴)电流控制为0,通过施加不同的直轴(d轴)电流,比较计算得到对应的电感值,并据此达到极性判断的目的。实验结果验证了误差补偿和极性判断算法的有效性。
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杨健
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关键词 永磁同步电机转子初始位置辨识极性判断延时校正    
Abstract:High frequency (HF) signal injection scheme is widely used to estimate the initial rotor position of interior permanent magnet synchronous motors (IPMSM). The accuracy of the estimated rotor position, however, may be degraded by the phase delay caused by pulse width modulation (PWM), digital filters in signal demodulation process and so on. To solve this problem, the main factors contributing to the estimation error are analyzed, and a unified compensation algorithm is proposed. In the compensation algorithm, the phase shift in the positive-sequence HF currents is extracted and used to compensate error in the estimated rotor position, improving the accuracy of estimation. In order to identify the rotor polarity, a method of the variation of saturated inductor based on the current closed loop control is proposed. In the polarity identification process, in order to keep the motor in static state, the current of q-axis is controlled to 0. By applying different d-axis currents, the corresponding inductance values are calculated and compared, and the polarity identification is achieved accordingly. The effectiveness of the proposed error compensation and polarity identification algorithm is confirmed through experiments.
Key wordsPermanent magnet synchronous motor    initial rotor position estimation    polarity identification    time delay correction   
收稿日期: 2017-06-19      出版日期: 2018-08-14
PACS: TM351  
通讯作者: 杨 健 男,1992年生,硕士研究生,研究方向为电动汽车用同步电机驱动系统分析及控制。E-mail:tmacjayyj@foxmail.com   
作者简介: 杨淑英 男,1980年生,教授,硕士生导师,研究方向为风力发电及电机驱动控制技术。E-mail:yangsyhfan@163.com
引用本文:   
杨健, 杨淑英, 李浩源, 张兴. 基于旋转高频电压注入的永磁同步电机转子初始位置辨识方法[J]. 电工技术学报, 2018, 33(15): 3547-3555. Yang Jian, Yang Shuying, Li Haoyuan, Zhang Xing. Initial Rotor Position Estimation for IPMSM Based on High Frequency Rotating Voltage Injection. Transactions of China Electrotechnical Society, 2018, 33(15): 3547-3555.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.170865          https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I15/3547