Monday, 23 November 2015

FAST-CONVERGING MPPT TECHNIQUE FOR PHOTOVOLTAIC SYSTEM

  • Under fast-varying solar irradiation and load resistance, a fast-converging maximum power point tracking (MPPT) system is required to ensure the photovoltaic (PV) system response rapidly with minimum power losses. 





  • Traditionally, maximum power point (MPP) locus was used to provide such a fast response. However, the algorithm requires extra control loop or intermittent disconnection of the PV module. Hence, this article presents a simpler fast-converging MPPT technique, which excludes the extra control loop and intermittent disconnection. 
  • In the MPPT algorithm, the relationship between the load line and the IV curve is used with trigonometry rule to obtain the fast response. 
  • This algorithm is four times faster than the conventional incremental conductance algorithm during the load and solar Irradiation variation. 
  • Consequently, this algorithm has higher efficiency.


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