Load Current Adaptive Step Size and Perturbation Frequency (LCASF) MPPT Algorithm or Adaptive Step Size with Adaptive Perturbation Frequency Scheme for Grid Connected PV System
Rachna Verma1, Anjali Potnis2
1Rachna Verma, Scholar M.E. Department of Electrical and Electronics Engineering, NITTTR, Bhopal, India.
2Dr. Anjali Potnis, Asst. Prof. Department of Electrical and Electronics Engineering, NITTTR, Bhopal, India.
Manuscript received on January 02, 2015. | Revised Manuscript received on January 20, 2015. | Manuscript published on February 28, 2015. PP: 45-51  | Volume-4 Issue-3, February 2015. | Retrieval Number:  C3718024315/2013©BEIESP

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Abstract: This paper deals with the growing electricity demand along with reduction in conventional fuel sources and growing environmental concerns, the renewable energy sources like wind power , solar power, hydro power , geothermal , biomass are globally welcomed to replace the conventional power sources. Among the different methods of generating electric power by alternative resources, photovoltaic (PV) has grown steadily in recent decades as one of the best technology alternative because it is free, abundant, pollution free and most widely distributed. Photovoltaic (PV) grid connected system is the trend of solar energy application. Photovoltaic (PV) is a technique of converting solar radiation into direct current electricity to generate electricity using semiconductor. The total amount of energy which is irradiated from the sun to the earth’s surface equal’s approximately 10,000 times the annual global energy consumption. But a typical solar panel converts only 30 to 40 percent of the incident solar irradiation into electrical energy. Maximum power point tracking technique is used to improve the efficiency of the solar panel. The proposed work is validated by simulating it for different load configurations using Matlab and the simulation result verifies the efficiency of proposed algorithm.
Keywords: Power system grid, Photovoltaic grid, Solar panel, MPPT.