Modular direct current (DC) architectures

Patent metadata

Field	Value
Publication number	US-10587115-B2
Application number	US-201615385365-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Dec 20, 2016
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

This specification describes a power distribution system comprising a first section that receives power from a first source. The power received from the first source is adjusted by a first rectifier unit coupled to a first power bus of the first section. The system also comprises a second section that is separate from the first section and that receives power from a second source. The power received from the second source is adjusted by a second rectifier unit coupled to a second power bus of the second distribution section. The system includes a swing rectifier connected to the first section and connected to the second section. The swing rectifier is configured to provide power to the first power bus and to the second power bus and to dynamically adjust the power capacity of the first section that is available to computing loads, and to dynamically adjust the power capacity of the second section that is available to computing loads.

First claim

The invention claimed is:

1. A power distribution system, comprising:
a first distribution section that receives power from at least one power source, wherein a characteristic of the received power is adjusted by a first rectifier unit coupled to a first power bus of the first distribution section;
a second distribution section that is separate from the first distribution section and that receives power from at least one power source, wherein a characteristic of the received power is adjusted by a second rectifier unit coupled to a second power bus of the second distribution section; and
a first swing rectifier connected to at least the first distribution section and the second distribution section, wherein the first swing rectifier is disposed intermediate the first and second distribution sections and is operable to:
dynamically adjust a power capacity of the first distribution section, comprising temporarily increasing an amount of peak power available at the first power bus in response to transient increases in power demand from a load, wherein the power demand exceeds a normal power capacity of the first power bus, and
dynamically adjust a power capacity of the second distribution section, comprising temporarily increasing an amount of peak power available at the second power bus in response to transient increases in power demand at the second power bus from the load, wherein the power demand exceeds a normal power capacity of the second power bus;

wherein each of the first power bus and the second power bus comprises a respective ring bus architecture, and the respective ring bus architectures are connected via a single swing rectifier that corresponds to the first swing rectifier.

2. The power distribution system of claim 1 , further comprising a first switch breaker unit associated with the first power bus and disposed in the first distribution section and a second switch breaker unit associated with the second power bus and disposed in the second distribution section, wherein the first and second switch breaker units each include a power rating that is indicative of a total power output of the respective first and second distribution sections.

3. The power distribution system of claim 2 , wherein the first swing rectifier is coupled to the first and second switch breaker units to increase an amount of available power to be provided from the first power bus to one or more loads and to increase an amount of available power to be provided from the second power bus to the one or more loads.

4. The power distribution system of claim 1 , wherein the at least one power source of the first distribution section and the at least one power source of the second distribution section are the same power source.

5. The power distribution system of claim 1 , wherein the first distribution section further includes at least one additional rectifier unit that cooperates with the first rectifier unit to form a first ring bus for the first power bus, and wherein the first ring bus receives adjusted power from each of the first and second rectifier units for distribution to one or more loads.

6. The power distribution system of claim 5 , wherein the second distribution section further includes at least one additional rectifier unit that cooperates with the second rectifier unit to form a second ring bus for the second power bus, and wherein the second ring bus receives adjusted power from each of the first and second rectifier units for distribution to the one or more loads.

7. The power distribution system of claim 1 , wherein:
each of the first distribution section and the second distribution section is configured to be arranged in a sectionalized ring bus power distribution architecture comprising a plurality of distinct ring sections, and
each distinct ring section of the sectionalized ring bus power distribution architecture is configured to provide power to a plurality of devices disposed within a data center facility.

8. The power distribution system of claim 1 , wherein:
each of the first distribution section and the second distribution section is configured to be arranged in a sectionalized ring bus power distribution architecture that is configured to be expanded to include one or more additional distribution sections and one or more additional swing rectifiers.

9. The power distribution system of claim 1 , wherein the first swing rectifier is further connected to a third distribution that includes a third power bus, and the first swing rectifier is operable to:
temporarily increase an amount of peak power available at the third power bus in response to transient increases in power demand from the load that exceeds a normal power capacity of the third power bus.

10. The power distribution system of claim 9 , wherein the transient increases in power demand from the load exceeds the respective normal power capacity of the first power bus, the second power bus, and the third power bus.

11. The power distribution system of claim 9 , wherein:
each of the first power bus, the second power bus, and the third power bus comprises a respective ring bus architecture; and
the respective ring bus architectures are connected via the single swing rectifier that corresponds to the first swing rectifier.

12. The power distribution system of claim 11 , wherein the single swing rectifier is configured to:
enable power sharing between the respective ring bus architectures of the first power bus, second power bus, and the third power bus; and
enable dynamic upscaling of a total DC-power capacity of the power distribution system.

Assignees

• Google Llc
• Google Inc

Inventors

• Lao Eduardo
• Sastry Jyoti
• Kennedy James
• Malone Christopher Gregory
• Sakalkar Varun

Classifications

• H02J4/00

  Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36) · CPC title

• H02J3/38

  Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel · CPC title

• H02J3/04

  Arrangements for connecting networks of the same frequency but supplied from different sources · CPC title

• H02J1/00 Primary

  Circuit arrangements for DC mains or DC distribution networks · CPC title

• H02M7/04 Primary

  by static converters · CPC title