基于单周控制的三相直流侧串联型有源电力滤波器

A Novel Three-Phase DC Side Series Active Power Filter With One Cycle Control

针对大量使用的三相不可控整流桥,提出了一种新型的基于单周控制的三相直流侧串联型有源电力滤波器,该滤波器串联在整流桥和谐波源负载之间,只需要工作在电压电流2个象限,仅处理部分功率,不需要进行复杂的谐波检测计算,通过简单的控制即可实现对谐波电压和无功的同时补偿。文中详细分析了该滤波器的工作原理,通过理论推导,建立了单周控制实现方程。理论分析和仿真结果表明,该单周控制的三相直流侧串联型有源电力滤波器谐波电流跟踪效果好、动态性能优良,能有效补偿整流桥非线性谐波源。

Aiming at macro three-phase uncontrolled rectifier bridges, a novel three-phase DC side series active power filter （APF） based on one cycle control is proposed. The proposed series APF is connected in series between rectifier bridge and power load producing harmonics, it works in two quadrants of voltage and current and only processes partial power. For the proposed series APF, complex harmonic detection computation is not required and by means of simple control the simultaneous compensation of both harmonic voltage and reactive power can be implemented. The authors analyze the working principle of the proposed series APF in detail, through theoretical derivation the equation to implement one cycle control is built. Results from both theoretical analysis and simulation show that the proposed series APF can trace harmonic current well, its dynamic performance is good and can compensate nonlinear harmonic source contained in rectifier bridge effectively.