Modified Modeling and System Stabilization of Shunt Active Power Filter Compensating Loads with ?F Capacitance

Yuqi Bing, Daozhuo Jiang, Yiqiao Liang, Chongxi Jiang, Tianxiang He, Lei Yang and Pengfei Hu
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Yuqi Bing: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Daozhuo Jiang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Yiqiao Liang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Chongxi Jiang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Tianxiang He: Zhejiang Huayun Clean Energy CO., Ltd., Hangzhou 310002
Lei Yang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Pengfei Hu: University of Electronic Science and Technology of China, Chengdu 611731

Energies, 2019, vol. 12, issue 11, 1-19

Abstract: The interactions between shunt active power filter (APF) and capacitance load tend to result in stability problems and resonance. The conventional model of a shunt APF is not precise enough to reflect this phenomenon. To address it, this paper proposes a modified shunt APF system model to accurately reflect various stability problems. This paper also studies the mechanism of positive feedback resonance brought by capacitance load and proposes a modified hybrid controller to improve the stable margin of the system, making the shunt APF work stably under different working conditions where there are μF capacitors on the demand side. The correctness and validity of the proposed strategy are verified by simulation analysis and prototype experiments.

Keywords: Active power filter (APF); digital hybrid repetitive control; modeling of grid-connected inverters; stability analysis; system stabilization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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