分析了电流型AC/DC变流器交流侧产生暂态振荡的原因,提出了电流型AC/DC变流器的线性二次型(LQ)最优控制策略,并给出了实验验证。结果表明,将LQ控制应用到电流型AC/DC变流器中,能够实现变流器网侧的单位功率因数和直流侧的恒流源特性。
An essential factor causing AC transient oscillation is analyzed and a linear quadratie(LQ) optimal control is proposed for current-source AC/DC converters. Experimental resuhs confirm the method and indicate the LQ control applying to current-source AC/DC conveners, unity power factor in network and constant current souree in DC-link are obtained.