基于零序平衡矢量的六相感应电动机SVPWM策略研究  

Research on the SVPWM Strategies of Six-phase Induction Motor Based on Zero-sequence Balancing Vectors

作　　者：李山[1] 刘述喜[1] 肖蕙蕙[1] 谭学敏[1] 

机构地区：[1]重庆理工大学电气工程与自动化系,重庆400050

出　　处：《机床与液压》2009年第8期388-393,共6页Machine Tool & Hydraulics

摘　　要：利用空间矢量解耦变换矩阵,六相电机从六维空间解耦至3个相互垂直的谐波子空间,从而简化其数学模型和控制。分析了六相电机各空间矢量的作用及对谐波的影响,提出了一种新型的基于零序平衡矢量的六相感应电动机SVP-WM控制策略。该控制策略是在控制零序电压矢量为零的基础上对d-q子空间的电压矢量进行合成,同时满足d-q子空间和零序子空间的伏-秒平衡,解决了传统SVPWM方法中定子电流谐波不可控的问题,有效地抑制了定子谐波电流,仿真和实验结果表明了该控制策略的有效性和可行性。Making use of the transforming matrix of space vector deeoupling, six-phase induction motor was decoupled from six dimension space to three harmonic subspaces whieh are vertical each other, which simplifies the mathematical model and control. The aetion of space vector and its effect on harmonie were analyzed, a new SVPWM control strategy was presented based on zero-sequence balancing vector for six-phase induction machine. This strategy synthesized the vector in the d-q subspace based on zero-sequence voltage veetor equaling to zero, it could satisfy the voltage-second balance at the d-q subspaee and zero-sequence subspaee at the same time, solve the uncontrolled stator current harmonic in conventional SVPWM method, and restrain the stator harmonie current effectively. The simulation and experimental results were given which verified the validity and feasibility.

关 键 词：六相感应电动机 谐波子空间 SVPWM 零序平衡矢量 

分 类 号：TM921.3[电气工程—电力电子与电力传动]