基于复合二阶广义积分器的永磁同步电机转子位置与转速估计.pdfVIP

2017年 4 月 电 工 技 术 学 报 V〇1.32 N a 7 第 32 卷第7 期 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Apr . 2017 基于复合二阶广义积分器的永磁同步电机 转子位置与转速估计 周 溱 李 长 磊 王 永 (中国科学技术大学信息科学技术学院自动化系合肥230000) 摘 要 传 统的基于状态估计的反电动势观测器估计到的反电动势存在相位滞后，用于永磁同步电 机转子位置估计时会造成估计角度的均值偏差。提出一种改进的反电动势观测器，可以无相差估计反 电动势。为消除控制算法、死区效应、负载扰动等引起的谐波和高频噪声的影响，将二阶广义积分器- 锁相环 （SOGI-FLL)算法引入永磁同步电机转子位置和转速估计领域，提出了复合 SOGI-FLL ( CSOGI- FLL) 算法，提高了转子位置和转速估计的动态性能，增强了对谐波和噪声的抑制能力。最后搭建实验 平台，通过稳态和动态实验验证了所提设计方法的有效性。 关键词：永磁同步电机位置估计转速估计反电动势观测器二阶广义积分器 中 图 分 类 号 ：TM341 Position and Speed Estimation for a Permanent Magnet Synchronous Motor Rotor Using Composite Second Order Generalized Integrator Zhou Zhen Li Changlei Wang Yong (Department of Automation School of Information Science and Technology University of Science and Technology of China Hefei 230000 China) Abstract Traditional back-EMF observer based on the state estimation causes a phase lag, which will introduce mean deviation of estimated angle for permanent magnet synchronous motor ( PMSM ) rotor position estimation. This paper proposed an improved back-electromotive force( back-EMF) observer with zero-phase lag. In order to eliminate harmonics and high frequency noises caused by the control algorithm, dead time effect, load disturbance, and other effects, the Second Order Generalized Integrator-Frequency Locked Loop( SOGI-FLL) algorithm was introduced to PMSM position and speed estimation areas. In this paper, Composite SOGI-FLL (CSOGI-FLL) algorithm was proposed to improve the dynamic performance of position and speed estimation and to enhance the capability to r