【摘要】 针对并联型有源电力滤波器 ,提出一种新的控制算法来消除非线性负载产生的谐波。通过使负载电流基波正序分量偏移电源电压的相移等于输入电流的相位角 ,来使得电网中的电流不含有谐波分量。利用DSP (数字信号处理器 )作为硬件控制平台可以使该算法得以实现。该方法不需检测网侧的电源电压 ,具有较好的实用价值。更多还原

【Abstract】 A new control algorithm for shunt active power filter is proposed to eliminate the harmonic currents of the non liner loads The phase shift of the positive sequence component of the fundamental frequency loadcurrenttothesource voltage is made to be equal to the phase angle of the input current so that the harmonic currents of the electric power network can be filtered. The algorithm is achieved by utilizing the digital signal processor based unit as the control hardware platform. The method requires source voltage sensorless operation and possesses the better practical values更多还原