提高永磁同步电机在深度弱磁控制区稳定性的控制研究  

Research of Permanent Magnet Synchronous Motor Control Stability Improving in Depth Flux-weakening Area

作　　者：石敏[1,2] 冯江华[2] 许峻峰[2] 何亚屏[2] 肖磊[2] 文宇良[2] 

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412007 [2]南车株洲电力机车研究所有限公司,湖南株洲421001

出　　处：《机车电传动》2015年第1期22-25,33,共5页Electric Drive for Locomotives

基　　金：湖南省重大专项项目(2014FJ1001)

摘　　要：分析了深度弱磁区域中电流矢量控制的稳定性问题,提出了一种新的关于永磁同步电机(PMSM)的最大转矩电压比(MTPV)弱磁控制策略,以提高系统的稳定性,增加最大转矩时更宽的调速范围,确保不同运行区域之间的平滑转换。通过MATLAB/Simulink仿真,验证了理论分析的正确性,表明使用新方案时PMSM可运行在1:4的速度范围内而没有任何电流振荡和不稳定性问题。Stability problem of PMSM current vector control in depth flux-weakening area was analyzed,and a new flux-weakening control scheme in the MTPV of PMSM was proposed,which significantly improved stability and increased speed range while maintaining maximum possible torque capability with smooth transition between different operation regions.Through MATLAB/Simulink simulation,the correctness of the theoretical analysis was verified;it was shown that PMSM could operate in the speed ratio of 1：4 without any current oscillation and instability with the new scheme.

关 键 词：永磁同步电机 弱磁控制 最大转矩电压比 稳定性 控制方法 

分 类 号：TM351[电气工程—电机]