基于广义二阶积分器的SPMSM无位置传感器控制逆变器非线性补偿策略  

Inverter Nonlinearity Compensation for SPMSM Sensor-less Control Based on Second-order Generalized Integrator

作　　者：刘兵[1] 周波[1] 倪天恒 LIU Bing;ZHOU Bo;NI Tianheng(Jiangsu Key Laboratory of New Energy Generation and Power Conversion （Nanjing University of Aeronautics and Astronautics）, Nanjing 210016, Jiangsu Province, China)

机构地区：[1]江苏省新能源发电与电能变换重点实验室(南京航空航天大学)

出　　处：《中国电机工程学报》2018年第11期3365-3374,共10页Proceedings of the CSEE

基　　金：中央高校基本科研业务费专项资金(NP2015205)~~

摘　　要：在基于脉振高频电压注入法的表贴式永磁同步电机（surface-mounted permanent magnet synchronous motor,SPMSM）低速无位置传感器控制系统中,逆变器非线性导致估计位置中包含6次谐波误差。该文首先对该谐波误差的由来进行分析;其次提出一种基于广义二阶积分器（secondorder generalized integrator,SOGI）的补偿策略,利用SOGI分别实现高频电流提取和谐波误差消除;然后在现有位置锁相环中引入误差前馈补偿,弥补双积分器串联环节引起的信号滞后;最后在一台额定功率1.5kW的SPMSM上对该方法进行实验验证,结果表明该方法能显著消除估计位置中的谐波误差,改善无位置传感器控制性能。In surface-mounted permanent magnet synchronous motor （SPMSM） sensor-less control based on high-frequency （HF） pulsating voltage injection, inverter nonlinearity gives rise to 6th harmonic error in the estimated position. Firstly, this very error was theoretical analyzed. Secondly, an inverter nonlinearity compensation strategy using second-order generalized integrator （SOGI） was proposed. The SOGI was adopted in HF signal extraction and harmonic error elimination. Thirdly, an error feed-forward compensator was used in the position PLL to compensate for the signal delay caused by 2 integrators. Lastly, the experimental results demonstrated the feasibility of the proposed strategy by a 1.5kW-SPMSM vector controlled system.

关 键 词：位置估计误差 逆变器非线性 高频电压注入 SPMSM 广义二阶积分器 

分 类 号：TM351[电气工程—电机]