Improving power-conversion efficiency via a hybrid MPPT approach for photovoltaic systems

J. Ma, K. L. Man, Tiew On Ting, Nan Zhang, S. U. Guan, P. W.H. Wong, E. G. Lim, T. Krilavicius, J. Kapociute-Dzikiene, C. U. Lei

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Abstract

This paper presents a hybrid Maximum Power Point Tracking (MPPT) method for improving the power -conversion efficiency of Photovoltaic (PV) generators. By detecting the output power changes caused by environmental reasons, the proposed method performs variable-step online search process with an accurate estimation of the Maximum Power Point (MPP) locus. A PV generator with a Single Ended Primary Inductance Converter (SEPIC) is developed in PSIM to verify the feasibility and suitability of the proposed method. Simulation results show that it can not only deliver a stable reference operating voltage for MPPs at steady state, but also can speed up the searching process under rapidly changing environment conditions.

Original languageEnglish
Pages (from-to)57-60
Number of pages4
JournalElektronika ir Elektrotechnika
Volume19
Issue number7
DOIs
Publication statusPublished - 2013

Keywords

  • Estimation
  • Photovoltaic effects
  • Power conversion
  • Search methods

Cite this

Ma, J., Man, K. L., Ting, T. O., Zhang, N., Guan, S. U., Wong, P. W. H., Lim, E. G., Krilavicius, T., Kapociute-Dzikiene, J., & Lei, C. U. (2013). Improving power-conversion efficiency via a hybrid MPPT approach for photovoltaic systems. Elektronika ir Elektrotechnika, 19(7), 57-60. https://doi.org/10.5755/j01.eee.19.7.5163