论文部分内容阅读
由相移 SPWM组合变流器构造了电流源型有源滤波器 ,分析了其交流侧和直流侧数学模型。为了提高系统的动态性能 ,抑制暂态振荡 ,对于交流侧提出了基于极点配置的控制方法 ;为了补偿系统损耗在直流侧采用 PI调节器。通过实验证明 ,这种有源滤波器在较低的器件开关频率下稳定性好、动态响应快 ,解决了有源滤波器这样大功率装置中开关器件容量较大与频率较低的矛盾
The current-source active filter is constructed by phase-shifted SPWM converter, and the mathematical models of AC and DC sides are analyzed. In order to improve the dynamic performance of the system and restrain the transient oscillation, a control method based on pole configuration is proposed for the AC side and a PI regulator is used on the DC side to compensate for the system loss. The experiment proves that the active filter has good stability under low device switching frequency and fast dynamic response, which solves the conflict between larger switching devices and lower frequencies in high power devices such as active filters