电流源有源滤波器中LC滤波器的特性及其设计

Characteristics and Design of LC Filter in Current Source Active Power Filter

电流源变流器中,LC滤波器是滤除开关谐波的最佳结构。但是,由于LC滤波器谐振频率附近有较大峰值,致使系统暂态下不稳定。另外,在电流源有源滤波器中,LC滤波器的设计决定了整个滤波装置的传输带宽以及器件的开关频率。文中描述了有源滤波器中LC滤波器的状态空间,在此基础上讨论了LC滤波器的特性及其设计方法。

In the current source transduce, LC filter is the best structure to filter the switching harmonic. However, the higher peak value near the LC filter s resonant frequency results in that the system is not stable in transient status. The design of LC filter determines the transmission band width of the whole filtering means and the switching frequency of the device in the active power filter of current source. The paper shows the status space of LC filter in the active filter and further discusses Characteristics and design of LC filter on this base.