一种提高级联系统稳定性的PMSM控制策略  

A PMSM Control Scheme Improving Cascaded System Stability

作　　者：张旭辉[1,2] 陈效华[1] 

机构地区：[1]奇瑞汽车股份有限公司博士后科研工作站,安徽芜湖241000 [2]南京航空航天大学,自动化控制学院,江苏南京210000

出　　处：《电力电子技术》2014年第11期26-27,33,共3页Power Electronics

基　　金：国家自然科学基金(61034007)~~

摘　　要：研究了永磁同步电机(PMSM)控制器直流侧前置Boost变换器后所构成的级联系统。推导了级联系统前后级子系统的输出、输入阻抗表达式。基于稳定性阻抗判据分析了影响级联系统母线电压稳定的相关因素,证明了增加母线电容有利于提高母线电压稳定性。根据级联系统的失稳机理提出一种将母线电压波动特征作用于电机控制电流参考值的控制策略。阻抗判据分析、仿真和实验均表明该控制策略能有效提升母线电压稳定性。The stability of cascaded system composed of the inverter supplies a permanent magnet synchronous motor（PMSM） and its front Boost converter are studied.The output impedance of front subsystem and the input impedance of rear subsystem are deduced.Based on the stability impedance criterion,relevant factors which affect the cascaded system bus voltage stability is analyzed and it is proved that increasing the bus capacitor can benefit the stability of the bus voltage.According to the mechanism of cascaded system instability,a motor control scheme is proposed which can reflect bus voltage fluctuation to its reference current.Simulation and experimental results demonstrate that the proposed control scheme can effectively improve the drive system stability range.

关 键 词：永磁同步电机 级联系统 母线电压稳定性 

分 类 号：TM351[电气工程—电机]