Patent ID: 9300220
Filing Date: 2016-03-29
CPC Classification: H02J,H02M,Y02B

Claim Text:
1. An uninterruptible power supply system, coupled to a main electricity which includes an input live terminal and an input neutral terminal, comprising: a rectification circuit, coupled to the main electricity; a power calibrating conversion circuit, coupled to the rectification circuit, wherein the power calibrating conversion circuit includes an independent drive unit and a switch unit, and the independent drive unit is for controlling the switch unit to turn on or turn off; an inverting conversion circuit, coupled to the power calibrating conversion circuit; an LC circuit, coupled between an output neutral terminal and an output ground terminal; a first output switch, coupled between the LC circuit and the inverting conversion circuit; a second output switch, coupled between the inverting conversion circuit and an output live terminal; and a relay switch, coupled between the input neutral terminal and the LC circuit; wherein when the relay switch turns on, the input neutral terminal is connected with the output neutral terminal through the LC circuit.