Patent ID: 7763990

Claim:
A hybrid green uninterruptible power system, comprising: an input port, for receiving an AC utility power; a secondary battery; a boost module, for converting the AC utility power into a high voltage DC power; a bi-directional converter module, coupled between the boost module and the secondary battery, wherein the bi-directional converter module has a multi-winding transformer, which bi-directionally converts the high voltage DC power into a low voltage DC power for charging the secondary battery, or releases the power from the secondary battery and boosts thereof, and simultaneously, the multi-winding transformer induces an additional DC power; and an inverter module, coupled to the bi-directional converter module for converting the boosted power, which is released from the secondary battery by the bi-directional converter module, into an AC power, whereby the hybrid green uninterruptible power system induces the additional DC power regardless of whether the AC utility power is normal or invalid.