Power supply systems and methods employing a ups interfaced generator

Abstract

An uninterruptible power supply (UPS) system includes a power transfer circuit having a power output configured to be coupled to a load, a UPS circuit having first power input configured to be coupled to a generator, such as a diesel- or gas-powered engine-generator set. The UPS circuit also has a second power input configured to be coupled to a backup power source, such as a battery or other energy storage device. The UPS circuit further has a power output configured to be coupled in common to the load with the power output of the power transfer circuit. The UPS system further includes a control circuit operatively associated with the UPS circuit and configured to control provision of power to the load from the generator and the backup power source via the UPS circuit responsive to a status of the power transfer circuit. The power transfer circuit may include, for example, another UPS circuit or other power transfer device, such as a static switch.

Dependencies are inferred from the claim text.