BI-LATERAL UNINTERRUPTIBLE POWER SUPPLY FOR HYBRID SYSTEM AND METHOD THEREOF

摘要

Disclosed is an alternating current common bus type hybrid power supply system which includes: a digital integrated control part which controls synchronizing feeding as to an alternating current common bus of an internal combustion generator by being installed in at least one internal combustion engine generator; a first grind connection type inverter which is combined between more than one battery and the alternating current common bus; and a second grid connection type inverter which is combined between more than one new renewable energy electricity and the alternating common bus. The battery performs current control by operating in a grid connection driving ode in case the internal combustion engine generator is being operated, and performs voltage control by operating in an independent driving mode in case the internal combustion generator is stopped. The second inverter is operated in connection with a voltage and a frequency of an AC voltage provided to the alternating current common bus by the internal combustion engine generator or the battery.