Power supply bus circuit

• US 10,432,018 B2
• Filed: 04/05/2016
• Issued: 10/01/2019
• Est. Priority Date: 11/18/2014
• Status: Active Grant

• Current Assignee: Huawei Digital Power Technologies Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Qin, Zhen, Li, Fanglin, Huang, Boning
• Primary Examiner(s): Cole, Brandon S
• Application Number:
  US15/090,724
• Publication Number:
  US 20160218558A1
• Time in Patent Office: 1,274 Days
• Field of Search: 307 1- 87
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 9/061 for DC powered loads
• CPC Class Codes: Y02B 10/70 Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Abstract

A power supply bus circuit includes a high-voltage power supply circuit, the high-voltage power supply circuit includes at least two first alternating current/direct current converters and further includes at least two high-voltage direct current power supply buses, and the first alternating current/direct current converter connects to mains, adjusts the connected mains into a high-voltage direct current, and outputs the high-voltage direct current to the high-voltage direct current power supply bus that is electrically connected to the first alternating current/direct current converter, where the high-voltage power supply circuit further includes at least one first direct current/direct current converter, where the first direct current/direct current converter performs voltage conversion on the high-voltage direct current between two high-voltage direct current power supply buses connected to the first direct current/direct current converter.

Claims

1. A power supply bus circuit comprising a high-voltage power supply circuit, wherein the high-voltage power supply circuit comprises:

at least two alternating current/direct current (AC/DC) converters, wherein each of the AC/DC converters comprises a power grid feedback circuit;

at least two high-voltage direct current (HVDC) power supply buses, wherein each of the HVDC power supply buses is electrically coupled to a separate AC/DC converter of the at least two AC/DC converters;

at least one high-voltage backup power supply electrically coupled to at least one of the HVDC power supply buses; and

at least one direct current/direct current (DC/DC) converter,

wherein each of the AC/DC converters comprises a corresponding mains end,

wherein a first AC/DC converter of the AC/DC converters is electrically coupled to one HVDC power supply bus of the HVDC power supply buses,

wherein the first AC/DC converter is configured to;

connect to mains using a first mains end of the AC/DC converter;

adjust the alternating current at the mains into a direct current; and

output the direct current to a first HVDC power supply bus,

wherein the first HVDC power supply bus is electrically coupled to the first AC/DC converter,

wherein the power grid feedback circuit is configured to;

receive the direct current from the first HVDC power supply bus when the high-voltage backup power supply discharges;

invert the direct current into an alternating current; and

output the alternating current through the first mains end of the first AC/DC converter,

wherein a first DC/DC converter is electrically coupled between two of the HVDC power supply buses, and

wherein the first DC/DC converter is configured to perform voltage conversion on the direct current between the two HVDC power supply buses that are coupled to the first DC/DC converter so as to implement mutual backup of power supplies between the two HVDC power supply buses.

2. The power supply bus circuit of claim 1, wherein the HVDC power supply bus is electrically coupled to one or more high-voltage backup power supplies.

3. The power supply bus circuit of claim 2, wherein the high-voltage backup power supply comprises one or more rechargeable power supplies, wherein the HVDC power supply bus is electrically coupled to the rechargeable power supplies, and wherein the rechargeable power supplies are charged through the HVDC power supply bus that is coupled to the rechargeable power supplies.

4. The power supply bus circuit of claim 2, wherein the high-voltage backup power supply comprises one or more rechargeable power supplies, wherein the HVDC power supply bus is electrically coupled to the rechargeable power supplies, and wherein the rechargeable power supplies are discharged through the HVDC power supply bus that is coupled to the rechargeable power supplies.

5. The power supply bus circuit of claim 2, wherein the high-voltage backup power supply comprises one or more new energy power supplies, wherein the high HVDC power supply bus is electrically coupled to the new energy power supplies, and wherein the new energy power supplies discharge through the HVDC power supply bus that is coupled to the new energy power supplies.

6. The power supply bus circuit of claim 5, wherein the new energy power supply comprises a solar energy power supply and a wind energy power supply.