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一种新型的电压型有源滤波器,从其内部的电压源逆变器产生一个补偿电压,通过串联LC装置转化为补偿电流,用来补偿由非线性负载所产生的谐波,使其不会流入电网;通过运用四个控制环来获得控制电路的参考指令电压。与常规的并联型有源滤波器相比,这种滤波器直流侧电容电压等级有所降低,有很好的滤波特性并降低了电磁干扰(EMI)等。
A new type of voltage-source active filter generates a compensation voltage from its internal voltage source inverter and is converted into a compensation current by a series LC device to compensate for the harmonics generated by the non-linear load so that it does not Will flow into the grid; by using four control loops to get the reference voltage of the control circuit. Compared with the conventional parallel active filter, this filter DC capacitor voltage level has been reduced, with good filtering characteristics and reduce electromagnetic interference (EMI) and so on.