论文部分内容阅读
介绍一种新型的用于补偿配电系统高次谐波的复合型有源滤波器。它能有效的抑制配电变压器附近设备产生的高次谐波。滤波器是由有源滤波器 (AF)和无源滤波器 (PF)串联组成。根据自动调整反馈放大系数K ,AF将根据高次谐波电阻的大小动作 ,从而实现控制。复式滤波器与通常的AF相比 ,能使PWM变换器的容量大幅度降低。因AF依电阻的正负而动作 ,能够有效减小流入PF中的高次谐波电流 ,从而避免了PF过负荷 ,经实验和仿真确认了PF的补偿效果
A new type of compound active filter for compensating the high harmonics of distribution system is introduced. It can effectively suppress high frequency harmonics generated by the equipment near the distribution transformer. The filter consists of an active filter (AF) and a passive filter (PF) connected in series. According to automatically adjust the feedback amplification factor K, AF will act according to the size of the higher harmonic resistance, in order to achieve control. Compared with the usual AF, the duplex filter can greatly reduce the capacity of the PWM converter. Due to AF positive and negative resistance in accordance with the action, can effectively reduce the flow of PF into the harmonic currents, thus avoiding the PF overload, the experimental and simulation confirmed the compensation effect of PF