A Novel Improved Coordinate Rotated Algorithm for PWM Rectifier THD Reduction

In this paper, a novel algorithm with rotating coordinate system is proposed to improve the total harmonic distortion (THD) of PWM rectifiers. Aiming at solving disadvantages poor dynamic response, unstable switching frequency, and large calculation burden in some current control methods, method employs active reactive separately while modifying error. The verified through single-phase rectifier. Based on measured results compared many other algorithms, such as peak mode (PCMC), average (ACMC), one cycle (OCC), modulating duty ratio (MDR), not only effectively reduces intermediate variables during calculation, but also improves THD reliability circuit. can be applied rectifiers household-distributed energy storage systems.