直接转矩控制的谐波分析与改进方案

Harmonic Analysis and Improvement Scheme of Direct Torgue Control

分析了直接转矩控制系统中谐波产生的原因,并在原系统基础上提出内陷十八边形磁链轨迹的改进方案。通过实验可以证明,此方案大大削弱了系统中定子电流的五次和七次谐波,同时减小了谐波对电网的污染,提高了系统的控制性能。

After analysing the cause of generating harmonic in direct torgue control system,an inprovement scheme is proposed. It Can deduce fifth and seventh harmonic of stator current,so it decreases the interferences to power network and increases the system control performances.