PV Output Power Smoothing Using Energy Capacitor System

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Because of the dependency of output power of the PV cells to the irradiance and temperature. noticeable amount of fluctuations is injected to the system that is not acceptable and should be reduced so that the power quality of the system is improved. In this paper application of the ECS for smoothing the output power of the PV cells has been investigated. By storing the power when the output power of the PV cell is more than the reference power and discharging it when the output power is less than the reference value. the smoothing process has been performed using ECS. The models of the PV cell. MPPT module and ECS have been presented. Using a case study the performance of the proposed system has been studied. Simulation results show that this system can smooth the output power of the system considerably. Also. it helps reduce voltage fluctuations drastically.