一种改进的直接转矩磁链和转矩方法研究

针对直接转矩控制的异步电动机运行时存在较大的电流及转矩脉动问题,提出一种改进的方案,并应用于异步电机控制系统中.该方法采用低通滤波器代替纯积分环节,并对其补偿;采用三点式转矩调节控制优化空问电压矢量的选择,通过Matlab仿真,给出了实验结果,并验证了所提出方案的有效性.

Study of Asynchronous Machine with an Improved of Stator Flux and Torque Observatory

Due to the large torque ripple and current ripple of asynchronous motors based on direct torque control at operation status, n improved method for induction motor system applications is proposed. Using low-pass illter to replace the integrator and compensate itself, also three value torque regulating is considered to get optimum switch vector selection . Through the experiment emulated by the Matlab , some experimental results prove thatthose measures are valid.