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http://dx.doi.org/10.6113/JPE.2010.10.3.328

Mitigation of Low Frequency AC Ripple in Single-Phase Photovoltaic Power Conditioning Systems  

Lee, Sang-Hoey (Dept. of Electrical Engineering, Chungnam National University)
An, Tae-Pung (Entec Electric & Electronic Co.,Ltd.)
Cha, Han-Ju (Dept. of Electrical Engineering, Chungnam National University)
Publication Information
Journal of Power Electronics / v.10, no.3, 2010 , pp. 328-333 More about this Journal
Abstract
A photovoltaic power conditioning system (PV PCS) that contains single-phase dc/ac inverters tends to draw an ac ripple current at twice the output frequency. Such a ripple current perturbs the operating points of solar cells continuously and it may reduce the efficiency of the current based maximum power point tracking technique (CMPPT). In this paper, the ripple current generation in a dc link and boost inductor is analyzed using the ac equivalent circuit of a dc/dc boost converter. A new feed-forward ripple current compensation method to incorporate a current control loop into a dc/dc converter for ripple reduction is proposed. The proposed feed-forward compensation method is verified by simulation and experimental results. These results show a 41.8 % reduction in the peak-to peak ac ripple. In addition, the dc/ac inverter control system uses an automatic voltage regulation (AVR) function to mitigate the ac ripple voltage effect in the dc link. A 3kW PV PCS prototype has been built and its experimental results are given to verify the effectiveness of the proposed method.
Keywords
Automatic voltage regulation; Current based maximum power point tracking; DC/DC converter; Feed-forward ripple current compensation method; Ripple reduction;
Citations & Related Records

Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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1 C Liu, J Lai, "Low frequency current ripple reduction technique with active control in a fuel cell power system with inverter load," IEEE Transactions on Power Electronics, Vol. 22, No. 4, pp.1429-1436, Jul. 2007.   DOI   ScienceOn
2 Enjeti, P.N., Shireen, W., "new technique to reject dc-link voltage ripple for inverters operating on programmed PWM waveforms," IEEE Transactions on Power Electronics, Vol. 7, No. 1, pp.171-180, Jan. 1992.   DOI   ScienceOn
3 M.A.S. Masoum, H. Dehbonei, E.F. Fuchs, "Theoretical and experimental analyses of photovoltaic systems with voltage and current-based maximum power-point tracking," IEEE Transactions on Energy Conversion, Vol. 17, No. 4, pp. 514-522, Dec. 2002.   DOI   ScienceOn
4 V.Blasko, V.Kaura, "Operation of a phase locked loop system under distorted utility conditions," IEEE Transactions on Industrial Electronics, Vol. 33, No. 1, pp. 58-63, Jan./Feb. 1997.
5 H. Cha, S. Lee, "Design and implementation of photovoltaic power conditioning system using a current based maximum power point tracking," in Proc. IEEE-IAS Annual Meeting, pp. 1-5, Oct. 2008.
6 P. D. Ziogas et al., "Rectifier-inverter frequency changer with suppressed dc-link components," IEEE Transactions On Industrial Electronics, Vol. 22, No. 6, pp. 1027-1036, Nov. 1986.
7 S. M. Alghuwainem, "Matching of a dc motor to a photovoltaic generator using a step-up converter with a current-locked loop," IEEE Transactions on Energy Conversion, Vol. 9, No 1, pp. 192-198, Mar. 1994.   DOI   ScienceOn
8 M.A.S. Masoum, H. Dehbonei, E.F. Fuchs, "Theoretical and experimental analyses of photovoltaic systems with voltage and current-based maximum power-point tracking," IEEE Transactions on Energy Conversion, Vol. 17, No. 4, pp. 514-522, Dec. 2002.   DOI   ScienceOn