Özet:

Conventional resources of energy such as coal and fossil fuels are now being replaced with renewable sources. Solar PV and wind energy conversion systems are being widely employed for harvesting electric energy. Modern power electronic converters have made it possible to draw maximum power from these solar and wind energy conversion systems. This paper presents a hybrid energy system that integrates wind energy from Permanent Magnet Synchronous Generator (PMSG) and a photovoltaic (PV) solar system. Maximum Power Point Tracking (MPPT) algorithm is implemented that extracts maximum power from PV array under constantly changing environmental conditions. The outputs of wind turbine and PV array are integrated suitably in order to retain continuous power supply as per load requirement. Operation of wind generator is mainly determined by estimation of speed which is carried out by a sensor-less rotor speed estimator. This estimator replaces all mechanical sensors and they are no longer needed. The turbine speed is thus governed based on the estimated rotor speed by controlling the voltage and current at the input of Boost converter. The proposed system is designed and simulated on Matlab / Simulink platform and results are discussed.

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