电工技术学报2018，Vol.33Issue(9)：1938-1945,8.DOI:10.19595/j.cnki.1000-6753.tces.170193
一种永磁同步电机转子位置混合辨识方法
A Hybrid Rotor Position Identification Method for Permanent Magnet Synchronous Motor
摘要
Abstract
A hybrid speed sensorless control strategy of interior permanent magnet synchronous motor is investigated, which combine the minimum voltage vector injection method and sliding-mode observer method. The method of minimum voltage vector injection is used to obtain the rotor position in the low speed range. The rotor position is identified through the sliding mode observer method at middle and high speed. In the transition region of position and speed, first, the position error of two methods are combined with the weight function which is speed dependently. After getting the mixed position error, the rotor position can be obtained by a phase-locked loop (PLL). For the transition of injected voltage, a ramp function related to speed of voltage amplitude is designed. The experimental results show that the position identification method proposed in this paper can realize the direct closed-loop start from the stationary state under the rated load, and the switch strategy implemented a smooth transition. Wide range speed control is realized, Low-speed algorithm is simple to implement, and it has great value in industrial application.关键词
永磁同步电机/无位置传感器/最小电压矢量注入/切换策略/滑模观测器Key words
Permanent magnet synchronous motor/position sensorless/minimum-voltage vector injection/switch strategy/sliding-mode observer分类
信息技术与安全科学引用本文复制引用
黄科元,金其军,黄守道..一种永磁同步电机转子位置混合辨识方法[J].电工技术学报,2018,33(9):1938-1945,8.基金项目
湖南省重点研发计划资助项目(2015GK2004). （2015GK2004）
