【摘要】 直流侧并联型有源电力滤波器并联在整流桥的直流侧,实现谐波治理的功能。本文提出了直流侧并联型有源电力滤波器正常工作的两个可控性条件,一是有源滤波器可以控制为一个受控电流源,二是有源滤波器的输入平均功率为零才能保证在逆变器直流侧选用无源储能元件。根据提出的两个条件分别分析验证了单相和三相直流侧有源电力滤波器的可控性。根据单相和三相直流侧有源电力滤波电路功能上的相似性,提出了基于单周控制的无需进行谐波电流检测的统一控制策略,稳态和动态实验结果证明了统一控制策略的正确性。更多还原

【Abstract】 DC side active power filter which is paralleled in dc side of rectifier can suppress the input harmonic current of the rectifier. Two controllability conditions which ensure the operation of dc side active power filter(APF) are proposed. The first one is that dc side APF should be controlled to a controlled current source, and another one is that the average input power of APF should be zero, and the second one makes it possible to use the passive energy storage element. According to the proposed controllable conditions, the controllability of single-phase and three-phase dc side APF is analyzed. A unified control strategy based on one cycle control is proposed to control the single-phase and three-phase dc side APF. By using one-cycle control, there is no need to sense and calculate the harmonic current components. The steady and dynamic experimental results verified the correctness of the control strategy.更多还原