Patent ID: 9300171
Filing Date: 2016-03-29
CPC Classification: H02J,Y02B

Claim Text:
1. An emergency power supply apparatus comprising: a plurality of load bars conveying power to a load, each of the plurality of load bars being independently connectable in parallel to a primary power source via a switch unit, which selectively connects one or more of the plurality of load bars to the primary power source; a DC bus arranged to receive DC power from a secondary power source; a plurality of bi-directional power conversion modules, each bi-directional power conversion module comprising either a rectifier element and an inverter element or a bi-directional converter and being activatable to form a connection between the DC bus and a respective load bar and each activated bi-directional power conversion module being selectively configurable in use to switch between: a controller in communication with the bi-directional power conversion modules to set a power transfer direction between each load bar and the DC bus thereby to control an operational state for each load bar.