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

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.