High voltage direct current power generator for computer server data centers

• US 10,123,450 B2
• Filed: 05/12/2016
• Issued: 11/06/2018
• Est. Priority Date: 05/12/2016
• Status: Active Grant

• Current Assignee: Meta Platforms, Inc. (f/k/a Facebook, Inc.)
• Original Assignee: Meta Platforms, Inc. (f/k/a Facebook, Inc.)
• Inventors: Sarti, Pierluigi
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Pham, Duc M
• Application Number:
  US15/153,348
• Publication Number:
  US 20170332510A1
• Time in Patent Office: 908 Days
• CPC Class Codes: H02M 1/4216 operating from a three-phase input voltage H02M1/4233 takes precedence
• CPC Class Codes: H02M 7/06 using discharge tubes without control electrode or semiconductor devices without control electrode
• CPC Class Codes: H02M 7/068 mounted on a transformer
• CPC Class Codes: H05K 7/1492 having electrical distribution arrangements, e.g. power supply or data communications
• CPC Class Codes: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

Some embodiments include a high voltage direct current (HVDC) power generator system for information technology (IT) racks. The HVDC power generator system can include a three-phase alternating current (AC) transformer having a primary winding and a plurality of secondary windings. A plurality of three-phase bridge rectifier circuits can be electrically coupled respectively to the plurality of secondary windings. The HVDC power generator system can include output terminals for powering its load. A first string of bridge rectifier circuits can be in series with each other and a first inductor. A second string of bridge rectifier circuits can be in series with each other and a second inductor. The first and second strings can be electrically coupled in parallel to the output terminals.

Claims

1. A high voltage direct current (HVDC) power generator system, comprising:

output terminals for powering a load of the HVDC power generator system;

a three-phase alternating current (AC) transformer having a single primary winding and a plurality of secondary windings including a Y-configuration winding, a delta-configuration winding, and two extended-delta configuration windings; and

a plurality of three-phase bridge rectifier circuits electrically coupled respectively to the plurality of secondary windings; and

wherein a first string of bridge rectifier circuits in series with each other and a first inductor, and a second string of bridge rectifier circuits in series with each other and a second inductor are electrically coupled in parallel to the output terminals.

2. The HVDC power generator system of claim 1, wherein the plurality of secondary windings includes four secondary windings, wherein each of the four secondary windings provides for four different phase shifts in constant and increasing steps.

3. The HVDC power generator system of claim 1, wherein the primary winding has a three-phase delta configuration.

4. The HVDC power generator system of claim 1, further comprising an energy storage device coupled in parallel to the output terminals.