低载波比下的永磁同步电机无传感器控制  

Sensorless Control of Permanent Magnet Synchronous Motor with Low Carrier Ratio

作　　者：柴俊[1] CHAI Jun(Wuxi Machinery and Electron Branch,Jiangsu Union Technical Institute,Wuxi 214028,Jiangsu,China)

机构地区：[1]江苏联合职业技术学院,无锡机电分院,江苏无锡214028

出　　处：《电气传动》2020年第6期10-14,共5页Electric Drive

基　　金：无锡机电高等职业技术学校科技专项基金(2018-JD05)。

摘　　要：提出一种适用于低载波比运行条件下的永磁同步电机无传感器控制方法。首先,分析了电流环在传统PI以及复矢量调节器控制下对系统解耦性能的影响,提出一种改进型复矢量调节器对系统电流环进行调节,有效提高系统低载波比运行下的解耦性能。其次,设计一种同步旋转坐标系下的全阶状态观测器,对电机转子位置进行有效观测。实验结果验证了提出控制方法的有效性和可行性。A sensorless control method for permanent magnet synchronous motor(PMSM)was proposed under low carrier ratio operation.Firstly,the influence of current loop on the decoupling performance of the system under the control of traditional PI and complex vector regulator was analyzed,and an improved complex vector regulator was proposed to adjust the current loop of the system,which effectively improved the decoupling performance under low carrier ratio operation.Secondly,a full-order state observer in synchronous rotating coordinate system was designed to effectively observe the rotor position of the motor.The experimental results verify the effectiveness and feasibility of the proposed control method.

关 键 词：永磁同步电机 无传感器控制 低载波比运行 全阶状态观测器 

分 类 号：TM301[电气工程—电机]