电工技术学报  2018, Vol. 33 Issue (8): 1723-1731    DOI: 10.19595/j.cnki.1000-6753.tces.162013
电机电器 |
基于旋转高频注入的内置式永磁同步电机初始位置检测算法
李浩源1, 张兴1, 杨淑英1, 杨健1, 李俊2
1. 合肥工业大学电气与自动化工程学院 合肥 230009;
2. 阳光电源股份有限公司 合肥 230088
A Detecting Algorithm for Initial Position of Interior Permanent Magnet Synchronous Motor Based on Rotating High Frequency Injection
Li Haoyuan1, Zhang Xing1, Yang Shuying1, Yang Jian1, Li Jun2
1. School of Electrical Engineering and Automation Hefei University of Technology Hefei 230009 China;
2. Sungrow Power Supply Co. Ltd Hefei 230088 China
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摘要 旋转高频电压注入法检测内置式永磁同步电机(IPMSM)初始位置时,针对信号滤波和数字控制延时会增大检测误差的问题,提出基于自调整轴系幅值收敛(SFAC)的位置信号解调算法。首先,将电流变换到两相自调整轴系中,变换角度为磁极位置估计角度+π/4,从而无需补偿数字控制延时造成的相位偏差。其次,采用递推离散傅里叶变换(DFT)计算两相自调整轴系的电流幅值,其幅值二次方差经过锁相环输出的磁极位置估计角度,再结合电压脉冲注入法判断磁极极性。其信号解调过程无需滤波处理,从而避免了滤波器的相移问题。最后,将所提的SFAC算法与同步轴系高通滤波器(SFHF)算法进行对比分析,并通过实验验证了算法的正确性和优越性。
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李浩源
张兴
杨淑英
杨健
李俊
关键词 内置式永磁同步电机旋转高频注入初始位置检测同步轴系高通滤波器自调整轴系幅值收敛递推DFT    
Abstract:Signal filtering and digital control delay will increase the detection error during the process of IPMSM initial position detection by means of rotating high frequency injection method. Thus, a position signal demodulation algorithm is proposed based on self-adjusting frame amplitude convergence (SFAC). First of all, the current is transformed into two-phase self-adjusting shaft frame, and the transform angle is pole position estimation plus π/4, thereby there is no need to compensate the phase deviation caused by digital control delay. Secondly, a recursive DFT scheme is used to calculate the current amplitude of self-adjusting frame, while the deference of amplitude is put into the phase-locked loop (PLL), the output of PLL is the pole position estimation angle. The polarity is judged by means of voltage pulse injection method. There is no signal filtering during the demodulation process, which avoids the phase shifting problem caused by filters. Finally, the proposed SFAC algorithm and the conventional synchronous frame high pass filter (SFHF) algorithm are compared and analyzed. The SFAC algorithm is verified by experiments.
Key wordsInterior permanent magnet synchronous motor    rotating high frequency injection    initial position detection    synchronous frame high pass filter    self-adjusting frame amplitude convergence    recursive discrete Fourier transform   
收稿日期: 2016-12-27      出版日期: 2018-04-24
PACS: TM351  
基金资助:国家自然科学基金资助项目(51677049)
通讯作者: 张兴 男,1963年生,教授,博士生导师,研究方向为大功率变流器及大型光伏并网发电技术。E-mail: honglf@ustc.edu.cn   
作者简介: 李浩源 男,1990年生,博士研究生,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: lihaoyuan1990321@163.com
引用本文:   
李浩源, 张兴, 杨淑英, 杨健, 李俊. 基于旋转高频注入的内置式永磁同步电机初始位置检测算法[J]. 电工技术学报, 2018, 33(8): 1723-1731. Li Haoyuan, Zhang Xing, Yang Shuying, Yang Jian, Li Jun. A Detecting Algorithm for Initial Position of Interior Permanent Magnet Synchronous Motor Based on Rotating High Frequency Injection. Transactions of China Electrotechnical Society, 2018, 33(8): 1723-1731.
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