六相双Y移30°异步电机调速设计与仿真

Design and simulation of speed control of six-phase induction motor with double Y shifted 30°

为解决六相双Y移30°异步电机磁链和转矩的脉动较大问题,以六相双Y移30°异步电机为研究对象,从建立电机数学模型入手,推导了状态空间方程,并利用仿真工具Matlab/Simulink建立了电机本体模型。基于旋转坐标系下的双Y移30°六相异步电机数学模型,采用直接转矩控制策略,设计了基于12个中间电压矢量的调速控制系统,并搭建了相应的仿真模型。仿真结果表明:所提出的六相异步电机调速控制系统响应速度快,运行过程中磁链、转矩脉动小,具有良好的动特性和稳态性能。

To deal with the six-phase induction motor with double Y shifted 30°, the state-space equa- tions of a motor are gained by means of the established mathematical model, and the simulation model is built up by using Matlab/Simulink. Based on the motor, speed control system with the 12 medium voltage space vectors is designed and the simulation model of direct torque control （DTC） under Mat- lab condition is established. Simulation results show that the proposed speed control system has good performance with small flux linkage and torque ripple, good transient response and steady response.