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Standalone Hybrid Wind Solar Power Generation System Using Multilevel Converter with Less Number of Switches


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DOI: https://doi.org/10.15866/iremos.v7i6.4462

Abstract


In this paper a cascaded multilevel converter with reduced number of switches is proposed for standalone hybrid solar wind power generation system to improve the waveform quality of the output voltage and current. Renewable energy sources such as solar and wind power generation systems play important role in energy generation. However, the output power of solar are usually fluctuant due to the uncertainty and intermittence of solar and wind energy, which requires a large capacity of energy storage to satisfy the load demand when the system works in grid connected mode. Storage systems are used to compensate or absorb the difference between load demand and generation. This paper also presents improvement of power system at different variable load and wind profile conditions. The main advantage of the proposed technique is the closed loop control system which has a vector PI controller which ensures optimal power delivery from solar is matched with the wind energy. The system is employed on a multilevel converter, DC-DC boost converter, photovoltaic system, PMSG and Battery storage system. The performance of the proposed system has been evaluated by Matlab/Simulink. The proposed system can not only improve the power supply reliability, but also reduces the cost of the system.
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Keywords


Standalone Hybrid Solar Wind System; Multilevel Converter with Less Number of Switches; Storage Systems; Vector PI Controller; Supply Reliability

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