US 11,990,757 B2
Current detection based renewable energy system for a data center
Tianyi Gao, Sunnyvale, CA (US)
Assigned to BAIDU USA LLC, Sunnyvale, CA (US)
Filed by Baidu USA LLC, Sunnyvale, CA (US)
Filed on Jan. 25, 2021, as Appl. No. 17/157,633.
Prior Publication US 2022/0239105 A1, Jul. 28, 2022
Int. Cl. H02J 3/32 (2006.01); H02J 7/35 (2006.01)
CPC H02J 3/32 (2013.01) [H02J 7/35 (2013.01); H02J 2300/24 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A power supply system for a data center having one or more of server clusters, the system comprising:
an inter-system bus having one or more first switches, each of the one or more first switches to connect the inter-system bus to one of the one or more server clusters;
one or more renewable energy systems and one or more second switches, each of the one or more second switches coupled to one of the one or more renewable energy systems to connect the corresponding renewable energy system to the inter-system bus;
one or more first direct current (DC)-DC converters and one or more second DC-DC converters, each renewable energy system of the one or more renewable energy systems is connected to a first DC-DC converter of the one or more first DC-DC converters and a second DC-DC converter of the one or more second DC-DC converters, the first DC-DC converter and the second DC-DC converter being connected in series and disposed between a renewable energy system and a corresponding second switch;
one or more current detection circuits, each of the one or more current detection circuits coupled to one of the one or more renewable energy systems and an output of the corresponding first DC-DC converter connected to the corresponding renewable energy system to detect an output current of the corresponding renewable energy system; and
a central controller coupled to the inter-system bus and configured to, in response to the output current of the corresponding renewable energy system being higher than a predetermined threshold current, activate the corresponding second switch to connect the corresponding renewable energy system to the inter-system bus to provide a renewable power to at least one of the one or more server clusters.