System For Common Redundant Bypass Feed Paths In Uninterruptible Power Supplies

摘要

An uninterruptible power supply (UPS) system includes an inverter feed path and a plurality of bypass feed paths configured to couple to an AC voltage source such that each bypass feed path includes a switch configured to couple the AC voltage source to the load when closed. The switch in each bypass feed path may be rated to conduct current that corresponds to an output of the inverter feed path. Each bypass feed path may be coupled in parallel with each other and the inverter feed path. The UPS system may also include at least one controller coupled to a respective inverter and to a respective rectifier in the inverter feed path and a plurality of controllers. Each controller may be coupled to a respective switch such that the at least one controller and the plurality of controllers communicate with each other via at least two communication buses.

主权项

1. An uninterruptible power supply (UPS) system, comprising:
a rectifier configured to couple to an alternating current (AC) voltage source; an inverter configured to couple to the rectifier and configured to output a controllable AC voltage to a load; a plurality of switches configured to couple to the AC voltage source and configured to conduct current to the load when closed, wherein each switch in the plurality of switches is coupled to each other in parallel, and wherein the plurality of switches is coupled to the rectifier and the inverter in parallel; at least one controller configured to couple to the rectifier and the inverter; and a plurality of controllers, wherein each controller of the plurality of controllers is configured to couple to a respective switch in the plurality of switches, wherein the at least one controller and the plurality of controllers communicate with each other via at least two communication buses.