US 12,322,961 B2
Parallel channel voltage feedback
Christopher Hopkins, Ledbury (GB); John F. Defenbaugh, Rockford, IL (US); and Michael C. Harke, De Forest, WI (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on May 16, 2023, as Appl. No. 18/318,222.
Prior Publication US 2024/0388084 A1, Nov. 21, 2024
Int. Cl. H02J 1/10 (2006.01); G05F 1/573 (2006.01); H02H 9/02 (2006.01); H02J 1/12 (2006.01)
CPC H02J 1/10 (2013.01) [G05F 1/573 (2013.01); H02H 9/02 (2013.01); H02J 2310/44 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A power supply system comprising:
a first direct current (DC) power supply comprising a first generator and a first rectifier circuit;
a second DC power supply comprising a second generator and a second rectifier, wherein a first output of the first DC power supply and a second output of the second DC power supply are commonly coupled at a common bus point;
a first current sensing device coupled between the first output of the first DC power supply and the common bus point;
a second current sensing device coupled between the second output of the second DC power supply and the common bus point;
a first generator controller configured to:
receive a first current signal from the first current sensing device and a second current signal from the second current sensing device;
analyze the first current signal and the second current signal to determine a first voltage foldback value based on a first common mode current calculated from the first current signal and the second current signal; and
operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage foldback value.