改进高频脉振电压注入的IPMSM无传感器控制  

IPMSM Sensorless Control Based on Improved High Frequency Pulse Voltage Injection

作　　者：刘建 李国银 谷翠军 LIU Jian;LI Guo-yin;GU Cui-jun(CRRC SRI Chongqing S&T Co.,Ltd.,Chongqing 401133,China)

机构地区：[1]重庆中车四方所科技有限公司,重庆401133

出　　处：《电力电子技术》2024年第4期8-12,52,共6页Power Electronics

基　　金：陕西省自然科学基础研究计划一般项目(2022JQ-538);重庆市技术创新与应用示范项目(cstc2018jszx-cyzd-0115)。

摘　　要：为解决传统静止坐标系高频脉振电压注入法由直流偏置导致的估计转子位置不准确的问题,在此提出了一种基于改进静止坐标系高频脉振电压注入的内置式永磁同步电机(IPMSM)无传感器控制方法。该方法仅使用β轴定子电流估计转子位置和转速,因此解决了直流偏置问题。首先,采用四阶广义积分提取高频电流,四阶广义积分在谐振频率处具有单位增益和零相移,保证了提取高频电流的准确性。然后,利用改进的二阶广义积分获得包含转子位置信息的正交信号,并且可以精确补偿信号处理过程中低通滤波器产生的相移和幅值衰减。最后,在2 kW IPMSM驱动平台上验证了算法的有效性。In order to solve the problem of inaccurate estimation of rotor position caused by DC bias in the traditional high-frequency pulse voltage injection into stationary reference frame,a sensorless control method is proposed for interior permanent magnet synchronous motors(IPMSM)based on improved high-frequency pulse voltage injection into stationary reference frame.Only β-axis stator current is used to estimate rotor position and speed in the proposed signal decoupling method,thus solving the DC bias problem.Firstly,a fourth order generalized integrator is used to extract high-frequency current,which has unit gain and zero phase shift at the resonant frequency,ensuring the accuracy of extracting high-frequency current.Then,an enhanced second order generalized integrator(SOGI)is used as a quadrature signal generator,and the phase shift and amplitude attenuation generated by low-pass filters during signal processing can be compensated accurately.The proposed method is verified by experiments on a 2 kW IPMSM drive platform.

关 键 词：内置式永磁同步电机 高频脉振电压注入 无传感器控制 

分 类 号：TM291[一般工业技术—材料科学与工程]