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Characteristic Analysis and Control Method of a Novel Hybrid Injection Active Power Filter |
Xu Xianyong1, Luo Zhikun1, Luo An2, Fang Lu2, Wu Jingbing2, Peng Xiao1 |
1. Hunan Electric Power Corporation Research Institute Changsha 410007 China 2. Hunan University Changsha 410082 China |
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Abstract Due to high harmonic current and low reactive power in 35kV bus of a substation, a kind of high-power hybrid active power filter with dual-resonance injection branch is studied, which is suited for high-voltage level. In the analysis of its topology, the filter characteristics, reactive power compensation characteristics, voltage-sharing and current-sharing characteristics of dual-resonance injection branch are discussed. In order to enhance the stability of the system, dual closed loop control strategy of harmonic is proposed. The control aim of inner-loop is the output current of inverter and its controller is traditional PI controller. The control aim of outer-loop is the harmonic current of power grid. The novel recursive integral PI control method based on improved PSO-BP neural network is proposed for the non-straight control aim. The improved PSO-BP neural network is used to adjust the proportional and integral factors, with good steady state and dynamic performance. Research case study results verify the effectiveness and correctness of the content.
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Received: 26 October 2010
Published: 10 March 2014
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