摘要
本文在分析永磁同步电机电流环工作原理的基础上,对电流环各组成部分进行数学建模。设计了一款永磁同步电机电流环控制器,采用矢量解耦、反电动势补偿+PI调节器的方法实现。消除了反电动势及直流母线电压的影响,实现了耦合量的完全解耦。通过简化电流闭环控制模型,得到电流环PI参数的简明计算公式。对比分析了简化前后电流环零极点分布及单位阶跃响应,验证了参数设计的合理性。电流环传递函数稳定性分析结果以及试验结果表明此电流环控制器能够使电流环响应快速、稳定。
Based on the analysis of working principle of the permanent magnet synchronous motor CurrentLoop, mathematical models were established. A Current-Loop controller of the permanent magnet synchro-nous motor was designed which realized by using vector decoupling, BEMF compensation and PIregulatorWhere the BEMF represented an abbreviation of back electromotive force, the controller eliminated the influ-ence of BEMF and DC bus voltage, and it decoupled the coupling quantity. By simplifying the current closedloop control model, the formula current loop PI parameters were got. Zero-pole distribution and unit stepresponse of current loop were analyzed, verify the rationality of the parameters. Function stability analysisresults and the experiment results show that the current loop controller can make current loop fast responseand stable.
出处
《微电机》
2015年第3期44-47,66,共5页
Micromotors
关键词
电流环控制器
传递函数
PI调节器
稳定性分析
current-loop controller
transfer function
PI regulator
stability analysis
