电工技术学报  2018, Vol. 33 Issue (9): 1967-1974    DOI: 10.19595/j.cnki.1000-6753.tces.170195
电机与电器 |
一种改进的永磁同步电机低速无位置传感器控制策略
李孟秋, 王龙
湖南大学电气与信息工程学院 长沙 410082
An Improved Low Speed Sensorless Control Strategy for Permanent Magnet Synchronous Motor
Li Mengqiu, Wang Long
College of Electrical and Information Engineering Hunan University Changsha 410082 China
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摘要 提出一种改进的永磁同步电机低速无位置传感器控制策略。与传统的旋转高频信号注入法和脉振高频信号注入法不同,该策略选择向静止坐标轴系注入高频脉振信号,转子位置估计信息可以通过载波电流响应提取。对于注入信号频率的选择和滤波器的设计进行了说明,并使用一种类似于简化型扩展卡尔曼滤波器的两相型锁相环得到最终的转子位置估计值。通过实验验证该方法的有效性,结果表明该方法在低速下能快速准确地得到转子位置信息,具有良好的稳定性和动态特性。
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李孟秋
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关键词 永磁同步电机无位置传感器低速性能两相型锁相环    
Abstract:An improved low speed sensorless control strategy for permanent magnet synchronous motor (PMSM) is proposed. Differing from conventional methods,such as the injection of a rotating carrier voltage into a stationary reference frame and the injection of a pulsating carrier voltage into an estimated synchronous reference frame,the proposed method injects a pulsating high-frequency carrier voltage into a stationary reference frame,and the rotor position information can be retrieved from the carrier current response. This paper gives a description for the selection of signal injection and the design of filter frequency, and the use of a two-phase-type-locked loop(TP-PLL) is similar to the simplified extended kalman filter to get the position of the final estimate value. The effectiveness of the method is verified by experiments. The results show that the proposed method can obtain the rotor position information quickly and accurately, and has good stability and dynamic characteristics.
Key wordsPermanent magnet synchronous motor (PMSM)    sensorless control    low speed performance    two-phase-type-locked loop (TP-PLL)   
收稿日期: 2017-02-27      出版日期: 2018-05-08
PACS: TM351  
基金资助:湖南省自然科学基金项目资助(S2016J504I)
通讯作者: 王龙 男,1993年生,硕士研究生,研究方向为电机控制技术。E-mail:1005727968@qq.com   
作者简介: 李孟秋 男,1968年生,博士,副教授,研究方向为电力电子与电力传动技术、电机控制技术。Email:limengqiu68@126.com
引用本文:   
李孟秋, 王龙. 一种改进的永磁同步电机低速无位置传感器控制策略[J]. 电工技术学报, 2018, 33(9): 1967-1974. Li Mengqiu, Wang Long. An Improved Low Speed Sensorless Control Strategy for Permanent Magnet Synchronous Motor. Transactions of China Electrotechnical Society, 2018, 33(9): 1967-1974.
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