电压逆变器型单相有源电力滤波器性能分析

Performance Analysis of Single phase Active Power Filters based on Voltage source Inverter

分析了电压逆变器型单相有源电力滤波器直流侧储能电容器的初始充电过程(有源电力滤波器的起动过程)和有源电力滤波器的稳定工作状态,并提出了判定有源电力滤波器性能、帮助有源电力滤波器设计的四个标识性参数。分析结果表明,无需附加任何充电环节或装置,电压逆变器型有源电力滤波器就能自动完成对储能电容器的初始充电过程,然后自动过渡到稳定工作状态,并在稳态中维持储能电容器上的电压平均值不变。除此之外,作为稳态分析的结果,给出了确定电压逆变器型有源电力滤波器主要参数的基本原则。

The initial charge process of DC capacitor and the steady working state of active voltage source inverter power filters are analyzed in this paper, and four new parameters are proposed to judge the working performance of active power filters and to aid their design. Results of analysis indicate the self charge ability of active VSI power filters without additional equipment under start up process and their ability of maintaining the average voltage on DC capacitor in steady state. Besides, the principle of parameter decision of active VSI power filter elements, as the conclusion of steady state analysis, is given in this article.