Browse > Article

Variable Structure PWM Controller for Highly Efficient PV Inverters  

Oh, Seong-Jin (Dept. of Automotive Engineering, Hanyang University)
SunWoo, Myoung-Ho (Dept. of Automotive Engineering, Hanyang University)
Publication Information
Journal of Power Electronics / v.9, no.6, 2009 , pp. 866-873 More about this Journal
Abstract
In general, the output voltage level of a PV array varies widely at various irradiances and temperatures. The MPP (Maximum Power Point) range of a medium- or high-power PV PCS is normally 450~830Vdc or 300~600Vdc. This means the PV PCS should operate in a wide range of modulation indexes. The PV PCS should satisfy the harmonic current requirement that the TDD (Total demand distortion) shall not exceed 5%. This paper proposes a new PWM control method for a medium- or high-power PV PCS which increases the efficiency of power conversion in all operation ranges with acceptable harmonic ripple currents. This paper compares and analyzes appropriate PWM schemes for the PV PCS in the view points of conversion efficiency and current harmonics.
Keywords
PV PCS; Pulse width modulation; Harmonic loss; Switch loss;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 Hyosung Kim, "Filter Design for Utility Interactive Inverters using Single-phase Full-bridge Topology," Journal of KIPE (Korean Institute of Power Electronics), Vol. 12, No. 4, pp. 346-353, Aug. 2007   과학기술학회마을   ScienceOn
2 D. G. Holmes, T. A. Lipo, Pulse Width Modulation for Power Converters, NJ: IEEE Press, ch. 4-6, 2003
3 H. Haeberlin, "Optimum DC Operating Voltage Grid-connected PV Plants," 20th European Photovoltaic Solar Energy Conference, Barcelona, pp. 1-4, 2005
4 J. W. Kolar, H. Ertl, and F. C. Zach, "Influence of the modulation method on the conduction and switching losses of a PWM converter system," IEEE Trans. Industrial Applications, Vol. 27, pp. 1063-1075, Nov./Dec. 1991   DOI   ScienceOn
5 IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems, IEEE Standard 1547, 2003
6 D. W. Jung, S. K. Sul, "Minimum-Loss Strategy for Three-Phase PWM Rectifier," IEEE Trans. Industrial Electronics, Vol. 46, pp. 517-526, Jun. 1999   DOI   ScienceOn
7 B. D. Min, J. P. Lee, J. H. Kim, T. J. Kim, D. W. Yoo, K. R. Ryu, J. J. Kim, E. H. Song, "A Novel Grid-connected PV PCS with New High Efficiency Converter," The 7th International Conference on Power Electronics, Daegu, pp. 478-482, 2007