并联混合型有源电力滤波器的自抗扰控制策略

doi:10.12052/gdutxb.220038

Abstract

Abstract: To improve the performance of shunt hybrid active power filter, a specific sub-harmonic compensation control strategy based on linear active disturbance rejection controller is proposed. By establishing a mathematical model of the shunt hybrid active power filter, the third-order system control problem is simplified into a first-order active disturbance rejection control problem by combining the characteristics of active disturbance rejection control. At the same time, a first-order active disturbance rejection control for harmonic current tracking and a double-closed-loop active disturbance rejection control for the DC bus voltage are designed. Finally, by comparing the traditional PI control through simulation, the strategy makes the harmonic current tracking more stable, the DC-side voltage overshoot is 0, and the current and voltage shocks are effectively suppressed. The harmonic distortion of the grid current after compensation is 1.26%. The results show that the control strategy has good tracking and anti-disturbance capability, the algorithm is simple and has some engineering application value.

Key words: shunt hybrid active power filter, specific subharmonic, linear active disturbance rejection controller

CLC Number:

TM761

Zhang Miao, Wu Shi-yu, Wen Jun-ming, Feng Chun-shou, Guan Yi-chuan. Active Disturbance Rejection Controller Strategy for Shunt Hybrid Active Power Filters[J].Journal of Guangdong University of Technology, 2022, 39(06): 62-67.

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