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http://dx.doi.org/10.6113/JPE.2013.13.6.1058

Application of a C-Type Filter Based LCFL Output Filter to Shunt Active Power Filters  

Liu, Cong (State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology)
Dai, Ke (State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology)
Duan, Kewei (Electric Power Training Center, State Grid Hunan Electric Power Company)
Kang, Yong (State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology)
Publication Information
Journal of Power Electronics / v.13, no.6, 2013 , pp. 1058-1069 More about this Journal
Abstract
This paper proposes and designs a new output filter called an LCFL filter for application to three phase three wire shunt active power filters (SAPF). This LCFL filter is derived from a traditional LCL filter by replacing its capacitor with a C-type filter, and then constructing an L-C-type Filter-L (LCFL) topology. The LCFL filter can provide better switching ripple attenuation capability than traditional passive damped LCL filters. The LC branch series resonant frequency of the LCFL filter is set at the switching frequency, which can bypass most of the switching harmonic current generated by a SAPF converter. As a result, the power losses in the damping resistor of the LCFL filter can be reduced when compared to traditional passive damped LCL filters. The principle and parameter design of the LCFL filter are presented in this paper, as well as a comparison to traditional passive damped LCL filters. Simulation and experimental results are presented to validate the theoretical analyses and effectiveness of the LCFL filter.
Keywords
Active filters; Grid connection; Harmonics; Power quality; Voltage source converters;
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Times Cited By KSCI : 6  (Citation Analysis)
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