US 12,443,256 B2
Power supply system for a data centre
Andreas Stiedl, Munich (DE); and Roland Huempfner, Nuremberg (DE)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Sep. 8, 2023, as Appl. No. 18/464,018.
Application 18/464,018 is a continuation of application No. PCT/EP2021/087176, filed on Dec. 22, 2021.
Prior Publication US 2023/0418348 A1, Dec. 28, 2023
Int. Cl. G06F 1/26 (2006.01); H02M 3/158 (2006.01); H02M 7/217 (2006.01)
CPC G06F 1/26 (2013.01) [H02M 3/158 (2013.01); H02M 7/217 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A power supply system for a data centre, the power supply system comprising:
one or more solid state transformers (SST) configured to convert any of a medium-voltage alternating current (MVAC) input or a medium-voltage direct current (MVDC) input to a first low-voltage direct current (LVDC) output;
one or more first stage DC-DC converters configured to convert the first LVDC output to a second LVDC output, wherein the first LVDC output and the second LVDC output are configured to be provided as a single voltage or two equal voltages of opposite polarities, wherein a value of the first LVDC output is one of +750 V DC, +/−750 V DC, or +1500 V DC, and wherein a value of the second LVDC output is +/−375 V DC;
one or more second stage DC-DC converters configured to convert the second LVDC output to a third LVDC output, wherein the third LVDC output is configured to supply power to one or more servers in a data centre information and communication technology (ICT) load area, and wherein the third LVDC output is secure extra low voltage (SELV); and
one or more redundancy devices configured to provide power backup at every stage in the power supply system, wherein the one or more redundancy devices is a partial power converter, and wherein the partial power converter comprises a resonant balancer circuit configured to split an input voltage into two equal halves.