【摘要】 主要研究一种基波串联谐振式混合有源滤波器。首先介绍其拓扑结构及主要特点;接着讨论其采用检测电网电流型控制策略时的工作原理,基本思想是通过适当控制有源部分来等效增大电网支路的谐波阻抗;最后从抑制电网阻抗与无源滤波器之间的串联和并联谐振、改善无源滤波器的滤波效果以及提高整个系统的鲁棒性这3个方面详尽分析了该滤波器的稳态补偿特性。更多还原

【Abstract】 It is presented a novel three-phase hybrid active power filter with series resonance circuit turned at fundamental frequency. The topology and the main characteristics of the filter are discussed. Then the principles of the filter selecting the control strategy based on detecting grid current are addressed, which equivalently enhancing the harmonic impedance in the grid by controlling the active power filter effectively. At last, the steady-state compensation characteristics are analyzed on the consideration of damping the resonance probability between the grid and the passive filters, enhancing the filtering effects of the passive filters and improving the robustness of the total system.更多还原