交交变频系统环流最小控制策略

Loop-Currtent Minimum Control Strategies for AC-AC Frequency Converter

文章针对相位控制交交变频工作环流进行了讨论,并应用傅氏数学方法推导了不同控制与调制信号所产生的输出电压函数表达式,分析了输出电压谐波分量对交交变频器环流大小的影响,归纳了交交变频器环流最小控制策略,解决了大功率交交变频器环流电抗器限流问题,总结了环流控制的基本方法,提高了交交变频器的工作性能。

In this paper,the work of phase-controlled ac-ac frequency converter loop-current is discussed,and the Fourier mathematical method is applied to deduce the output voltage function expression under different control and modulating signal.The output voltage harmonic components of the ac-ac frequency converter,impact of the size of loop-current,the ac-ac frequency converter control strategy for the smallest loop-current and problems to solve the high-power,circulation of loop-current-limiting reactor are analyzed and summed up.The working performance of ac-ac frequency converter is improved.