电工技术学报2018，Vol.33Issue(8)：1723-1731,9.DOI:10.19595/j.cnki.1000-6753.tces.162013
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
A Detecting Algorithm for Initial Position of Interior Permanent Magnet Synchronous Motor Based on Rotating High Frequency Injection
摘要
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.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DFTKey words
Interior 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分类
信息技术与安全科学引用本文复制引用
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):1723-1731,9.基金项目
国家自然科学基金资助项目(51677049). （51677049）
