독립형 태양광 전력변환장치 연구

This paperis aboutthe study ofa stand-alone photovoltaic powerconditioning system with an energy storage system with battery.The paper proposes the appropriate circuit modelof stand-alone PV PCS considering the maintenance of the battery system. It also proposes the buck converter modeling by a state-spaceaveraging method considering characteristics of solar cell. Lastly, it shows the way to choose the suitable battery and to design the model of bi-directional converter for charging and discharging battery. PSIM simulation is used to validate the proposed algothim of the system.