Shunt active power filter with enhanced dynamic performance using novel control strategy. Issue 12 (1st December 2014)

• Record Type: Journal Article
• Authors: Xiao, Zhenfeng; Deng, Xiangtian; Yuan, Rongxiang; Guo, Pilong; Chen, Qijuan
• Is Part Of: IET power electronics. Volume 7:Issue 12(2014)
• Page Start: 3169
• Page End: 3181
• Publication Date: 2014-12-01
• Subjects: active filters -- power filters -- power system harmonics -- neurocontrollers -- PI control -- harmonic distortion; shunt active power filter -- enhanced dynamic performance -- control strategy -- power system harmonics -- SAPF -- proportional‐integral control -- dual‐repetitive controller -- DRC -- current tracking -- enhance dynamic response -- neural network PI control -- response speed -- PI parameters -- optimisation parameters online -- software systems -- hardware software -- compensation performance -- industrial prototype active power fllter -- control strategy -- system compensation -- total harmonic distortion; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2013.0524
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : To realise the accurate and real‐time compensation of the harmonics of a power system, this study proposes a novel control strategy for shunt active power filter (SAPF), adopting the composite strategy of neural network proportional‐integral (PI) control and dual‐repetitive controller (DRC). In DRC, one repetitive controller is used to ensure current tracking accuracy and the other one is used to enhance dynamic response. The neural network PI control is adopted to improve response speed by turning the PI parameters adaptively and setting optimisation parameters online. Through the optimisation of this approach and the rational configuration of the hardware and software systems, the SAPF could achieve rapid dynamic response with high tracking accuracy and excellent compensation performance. A 100 kVA industrial prototype active power filter has been developed by using this control strategy. System compensation could effectively reduce the total harmonic distortion values from 26 to 27.7%, 27.6 to 4.25% and 4.57 to 4.35% for each phase of the current. The full response time of the system is < 10 ms.