Dual output uninterruptible power supply

Patent metadata

Field	Value
Publication number	US-11715973-B2
Application number	US-201916675213-A
Country	US
Kind code	B2
Filing date	Nov 5, 2019
Priority date	Nov 5, 2019
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

An uninterruptible power supply (UPS) includes a rectifier configured to receive alternating current (AC) power. The UPS further includes a first output connected to the rectifier through an inverter. The first output is configured to output an AC power supply. The UPS also includes a second output connected to the rectifier through a battery backup and a stepdown converter. The second output is configured to output a direct current (DC) power supply in response to a detected power anomaly condition, thereby providing extra redundancy that allows for increased power availability and uptime.

First claim

What is claimed is:

1. An uninterruptible power supply (UPS) comprising:
a rectifier configured to receive alternating current (AC) power;
a first output provided by an inverter, the first output being configured to output AC power, the inverter receiving a first input from the rectifier and receiving a second input from a battery backup; and
a second output that provides DC power to an external DC equipment in response to a detected power anomaly condition; and
a stepdown converter configured to step down the DC power to output at the second output.

2. The UPS of claim 1 , wherein the power anomaly condition comprises one of a power failure or an excess power condition.

3. The UPS of claim 1 , wherein the stepdown converter converts DC voltage from a voltage of the battery backup to a voltage of the second output.

4. The UPS of claim 1 , wherein the UPS is coupled within a rack and further comprising a power supply unit coupled within the rack, wherein the first output is connected to AC powered equipment in the rack and the second output is connected to a DC distribution bus bar, and the DC power is sourced to the DC distribution bus bar as a current shared power source with an output of the power supply unit during the power anomaly condition.

5. The UPS of claim 4 , further comprising a first power supply line connected to the UPS and a second power supply line connected to the power supply unit.

6. The UPS of claim 1 , wherein the first output is configured to operate in a high efficiency mode or a double conversion mode.

7. A dual output uninterruptible power supply (UPS) comprising:
a first output;
a second output that provides power to an external DC equipment in response to a detected power anomaly condition;
a rectifier configured to convert input AC power to DC power supplied to a battery backup;
an inverter configured to convert the DC power to AC power to output at the first output, wherein an output of the rectifier is connected to a first input of the inverter and an output of the battery backup is directly connected to a second input of the inverter; and
a stepdown converter configured to step down the DC power to output at the second output.

8. The dual output UPS of claim 7 , wherein the second output is activated in response to a power anomaly condition.

9. The dual output UPS of claim 8 , wherein the second output is in an active state until one or more shut down operations of connected devices having random-access memory are completed.

10. The dual output UPS of claim 7 , wherein the power anomaly condition comprises one of a power failure or excess power condition.

11. The dual output UPS of claim 7 , wherein the UPS is coupled within a rack and further comprising a power supply unit coupled within the rack, wherein the first output is connected to AC powered equipment in the rack and the second output is connected to a DC distribution bus bar, and the DC power is sourced to the DC distribution bus bar as a current shared power source with an output of the power supply unit.

12. The dual output UPS of claim 11 , further comprising a first power supply line connected to the UPS and a second power supply line connected to the power supply unit.

13. The dual output UPS of claim 7 , wherein the first output is configured to operate in modes of operation that are different than modes of operation of the second output.

14. The dual output UPS of claim 7 , wherein the first and second output are configured for selectable operation in a plurality of operating modes comprising a high efficiency mode of operation, a double conversion mode of operation, a second output backup power mode of operation, and a peak shaving mode of operation.

15. A method for providing an uninterruptible power supply (UPS), the method comprising:
configuring a second output to provide DC power to an external DC equipment in response to a detected power anomaly condition;
configuring a rectifier to convert input AC power to DC power supplied to a battery backup;
configuring an inverter to convert the DC power from the rectifier to AC power to output a first output, wherein an output of the rectifier is connected to a first input of the inverter, and an output of the battery backup is directly connected to a second input of the inverter; and
configuring a stepdown converter to step down the DC power to output at the second output.

16. The method of claim 15 , wherein the power anomaly condition comprises one of a power failure or excess power condition.

17. The method of claim 15 , further comprising configuring the first and second outputs to selectively operate in a plurality of operating modes comprising a high efficiency mode of operation, a double conversion mode of operation, a second output backup power mode of operation, and a peak shaving mode of operation.

18. The method of claim 15 , further configuring an alternating current (AC)/direct current (DC) converter to convert the AC power to the DC power supplied to a battery backup.

19. The method of claim 15 , further comprising configuring the stepdown converter to step down a voltage output of the battery backup.

20. The method of claim 15 , further configuring the first and second outputs for operation at a same time.

Assignees

• Microsoft Technology Licensing Llc

Inventors

• Sok Banha
• Kazi Rameez K
• Harris Shaun L
• Siegler John J

Classifications

• H02J2105/425

  the loads being an Information and Communication Technology [ICT] facility · CPC title

• H02J9/062 Primary

  for AC powered loads · CPC title

• G06F1/30

  Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations (for resetting only G06F1/24) · CPC title

• H02J9/068

  Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection · CPC title

• H02J9/061 Primary

  for DC powered loads · CPC title