Grid-connected hybrid solar photovoltaic generation system having uninterruptible power supply

PURPOSE: A hybrid photovoltaic generation system is provided to stably supply power by efficiently combining a photovoltaic generation with a battery generation. CONSTITUTION: A PV converter(600) converts photovoltaic power into a DC voltage. A battery charging/discharging converter(200) reduces the output voltage of the PV converter to a battery charging voltage. The battery charging/discharging converter boosts the voltage of the battery to the voltage for operating an inverter. An inverter rectifier(400) converts the DC power of the battery into AC power and converts the power of the system into the DC power. A system connection relay(310) separates the output of the inverter from a system(300) when the power is off in the system. A charging/discharging relay(210) separates a battery charging/discharging unit from the inverter rectifier. A controller(800) controls the photovoltaic generation system.