Investigations On Performance Improvement Of Solar Photovoltaic System Fed Asynchronous Motor Drive

Abstract

Solar energy is rapidly gaining prominence as an important renewable energy newlineresource. However, only a minuscule portion of the available solar energy is newlineharnessed by the technology till date. Using Conventional Si based photovoltaic newlinemodules results a mere conversion of solar energy into electricity is 15%. The factors newlineof conversion can be increased up to 40% by using higher efficiency solar cells under newlinehigh concentration. The new capacity installation decisions today are becoming more newlinecomplicated in many parts of the world because of difficulty in finding sites for new newlinegeneration and transmission facilities. Hence, a research is to be carried out to design newlineand develop various solar plants with MPPT based controller for a PV array with a newlinelow cost and battery less electric drive. The system is connected to an asynchronous newlinemotor drive where, power is fed to DC-DC boost converter and an inverter from newlinephotovoltaic panels. newline newlineThere are advantages with the use of batteries that are used for maintaining the newlineefficiency of power conversion chain from the PV panel to the asynchronous motor newlinedrive. Solar energy is the best option for electricity generation, as it is available newlineeverywhere, free and harmless. On an average the sunshine in India is about 6 hrs in a newlineday and annually the sun shine is about 9 months in a year. Electricity from the sun newlinecan be generated through the solar photovoltaic modules (SPV). The SPV comes in newlinevarious power output to meet the load requirement. The photovoltaic (PV) is even newlinemore modular than the wind. It allows installations in stages as needed without losing newlinethe economy. It can be sized to any capacity, as the solar arrays are priced directly by newlinethe peak generating capacity in watts and indirectly by square foot. For small grids, newlinethe modularity of the PV and wind systems is having more importance newlineLocal renewable power plants can also benefit small power systems by moving newlinegeneration near the load, thereby reducing voltage drop at the end of a long newlineoverloaded line.