Uninterruptable power supply system and method

摘要

An uninterruptable power supply (UPS) system/method providing power line conditioning and power factor correction (PFC) that incorporates centralized battery backup energy storage architecture is disclosed. The system generally comprises an AC-DC power supply with active PFC (power factor correction) function, a battery transfer switch, an isolated battery charger placed between the utility power source and battery strings, battery strings connecting the battery charger and the battery transfer switch, EMI/Lightning circuitry that provides lighting/line surge protection as well noise suppression functions, and a controller monitoring the quality of the utility power source. Uninterruptable power for data centers is achieved in this context via use of the battery strings, battery transfer switch, battery charger, and controller system configuration. Disclosed methods associated with this system generally permit the UPS to operate in a distributed fashion in support of computing systems within data centers.

主权项

1. An uninterruptable power supply system comprising:
(a) power controller; (b) battery transfer switch; (c) battery charger; (d) battery string; and (e) AC+DC power supply; wherein: said power controller further comprises a sense input and control output; said battery transfer switch further comprises a control input, common output, first switch input, and second switch input; said AC+DC power supply further comprises a power input and load output connections; said AC+DC power supply power input is electrically connected to said battery transfer switch common output; said battery transfer switch first switch input is electrically connected to said battery string; said battery transfer switch second switch input is electrically connected to a utility power source; said power controller sense input is electrically connected to said utility power source; said power controller control output is electrically connected to said battery transfer switch control input; said power controller control output is configured to activate said battery transfer switch to electrically connect said utility power source to said AC+DC power supply power input when power from said utility power source is available and electrically connects said battery string to said AC+DC power supply power input when power from said utility power source is not available; said battery charger further comprises a power input and load output that are electrically isolated; said battery charger power input is electrically connected to said utility power source; said battery charger load output is electrically connected to said battery string; and said battery charger charges said battery string in response to electrical power received from said utility power source or an alternate power source.