摘要
首先分析了载波相移SPWM(CPS-SPWM)技术原理和该技术在电压型多电平变流器中的应用,具体讨论了通过级联H桥实现变流器的技术方案;利用基于瞬时无功功率理论的自适应闭环检测方法,构建了有源电力滤波器(APF)装置。实验验证了将基于CPS-SPWM技术的级联H桥型多电平变流器应用于三相APF上,能在较低开关频率下实现非线性和感性负载引起的谐波及无功污染的补偿。
The principle of carrier phase-shifted SPWM （CPS-SPWM） technique, and its application on multilevel voltage source inverter（VSl） were analyzed; the scheme based on cascade H-bridge converter was given; the closed-loop detecting circuit of harmonic and reactive current based on instantaneous reactive power theory is used in this 3-phase active power filter （APF） system. Experimental results prove that the APF system with cascade H-bridge multilevel VSI based on CPS-SPWM can achieve excellent compensation effect to the pollution caused by nonlinear and reactive loads.
出处
《电气传动》
北大核心
2007年第10期29-32,共4页
Electric Drive
