MAXIMUM POWER POINT TRACKER (MPPT) USING INCREMENTAL CONDUCTANCE METHOD (BEFORE PROJECT)

Abstract:

Due to rapid growth in the semiconductor and power electronics techniques, PV energy is of increasing interest in electrical power applications. Photovoltaic (PV) energy is the most important energy resource since it is clean,pollution free, and inexhaustible It is important to operate PV energy conversion systems near the maximum power point to increase the output efficiency of PV arrays. The output power of PV arrays is always changing with weather conditions, i.e., solar irradiation and atmospheric temperature. Therefore, a MPPT control to extract maximum power from the PV arrays at real time becomes indispensable in PV generation system.

In recent years, a large number of techniques have been proposed for tracking the maximum power point (MPP). Maximum power point tracking (MPPT)is used in photovoltaic (PV) systems to maximize the photovoltaic array output power, irrespective of the temperature and radiation conditions and of the load electrical characteristics the PV array output power is used to directly control the dc/dc converter, thus reducing the complexity of the system. The resulting system has high-efficiency; lower-cost this paper proposes a maximum Power-point tracking (MPPT) method with a simple algorithm for photovoltaic (PV) power generation systems. The method is based on use of a Incremental conductance of the PV to determine an optimum operating current for the maximum output power. This work proposes on Investigation of Incremental conductance Based maximum Power Point Tracking for Photovoltaic System, to have the advantages of low frequency switching.

Incremental Conductance Algorithm is highly efficient as it has Steady State accuracy and it gets easily adjustable for the changing environmental conditions thus increasing the efficiency of PV system. Additionally if the Solar radiation is also modelled using slope of the panel, latitude the temperature of the place where the solar panel is installed the panel can be installed in such a way it can produce maximum power throughout the day.

Keywords: Solar radiation, Photovoltaic Module, Maximum Power Point Tracking, Incremental Conductance Algorithm, Direct Control method, DC-DC converters.

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