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http://dx.doi.org/10.6113/TKPE.2012.17.3.274

Comparison of Current Controllers of Grid-connected PCS for Distributed Resources  

Park, Jong-Hyoung (Dept. of Electrical Engineering, Kyungpook Nat'l Univ.)
Jo, Teak-Hyun (Energy Environment Research, Marine Research Institute, Samsung Heavy Industries Co. LTD.)
Kim, Heung-Geun (Dept. of Electrical Engineering, Kyungpook Nat'l Univ.)
Chun, Tae-Won (Dept. of Electrical Engineering, University of Ulsan)
Nho, Eui-Cheol (Dept. of Electrical Engineering, PuKyong Nat'l Univ.)
Cha, Hon-Nyung (Dept. of Electrical Engineering, Kyungpook Nat'l Univ.)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.17, no.3, 2012 , pp. 274-280 More about this Journal
Abstract
In this paper, three current controllers for a grid-connected PCS using an LCL filter are compared and analyzed. Current controllers discussed in this paper are linear controllers such as PI (proportional-integral), PR (proportional-resonant), and DB (deadbeat) controller. Both transient and steady state responses of each controller are compared through both simulation and experiment. Although the DB controller has the fastest transient response and the lowest THD in the steady state, the DB controller has two cycles delay of current response in the steady state and has the stability problem which can be occurred due to variation of the system parameters. On the one hand the responses of PR controller are not much different from that of DB controller but the other hand that are not only strong to noise of grid current but also have smaller THD than PI controller. Considering the response time and stability issue of three controllers, the PR controller has the best performance among three controllers and thus can be strongly recommended as a current controller for a grid-connected PCS.
Keywords
deadbeat controller; distributed resources; grid-connected PCS; LCL filter; proportional-integral controller; proportional-resonant controller; stability;
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1 Hyun-Woo Seo, Jung-Min Kwon, Bong-Hwan Kwon, "Transformerless Three-Phase Line-connected Photovoltaic PCS," KIPE Trans., Vol. 12, no. 5, pp. 355-363, Oct. 2007
2 Wu Libo, Zhao Zhengming, "A Single-Stage Three-Phase Grid-Connected Photovoltaic System With Modified MPPT Method and Reactive Power Compensation," IEEE Trans. on Energy Conversion, Vol. 22, No. 4, pp. 881-886, Dec. 2007.   DOI
3 Teodorescu, R. "Proportional-resonant controllers and filters for grid-connected voltage-source converters," in IEE proceedings of Electric Power Applications, Vol. 153, No. 5, pp. 750-762, Sep. 2006.   DOI   ScienceOn
4 Espi Huerta, J.M "A synchronous Reference Frame Robust predictive Current Control for Three-Phase Grid-Connected Inverters," IEEE Trans. on Industrial Electronics, Vol. 57, No. 3, pp. 954-962, Mar. 2010.   DOI
5 Adrian Timbus, Frede Blaabjerg, "Evaluation of Current Controllers for Distributed Power Generation Systems," IEEE Trans. on Power Electronics, Vol. 24, No. 3, pp. 654-664, Mar. 2009.   DOI
6 Dannehl J, Friedrich Wilhelm Fuchs, "Investiga- tion of Active Damping Approaches for PI-Based Current Control of Grid-Connected, Pulse Width Modulation Converters With LCL Filters," IEEE Trans. on Industry Application, Vol. 46, No. 4, pp. 1509-1517, Jul./Aug. 2010.   DOI
7 Osman Kukrer, "Discrete-Time Current Control of Voltage-Fed Three-Phase PWM Inverter," IEEE Trans. on Power Electronics, Vol. 11, No. 2, pp. 260-269, Mar. 1996.   DOI   ScienceOn
8 Eun-Soo Jung, Hak-Jun Lee, Seung-Ki Sul, "Implementation of a Fast Current Controller using FPGA," KIPE Trans., Vol. 12, No. 4, pp. 339-345, Aug. 2007.