US 12,218,618 B2
Regenerative energy dissipation control in a multichannel drive
Stephen Minshull, Bromsgrove (GB); and Kyle Ives, Loves Park, IL (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Sep. 14, 2022, as Appl. No. 17/944,336.
Claims priority of application No. 21196637 (EP), filed on Sep. 14, 2021.
Prior Publication US 2023/0083115 A1, Mar. 16, 2023
Int. Cl. H02P 3/18 (2006.01); H02M 7/493 (2007.01); H02P 5/74 (2006.01)
CPC H02P 3/18 (2013.01) [H02M 7/493 (2013.01); H02P 5/74 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of controlling dissipation of regenerated power in a multi-channel drive system having a plurality of inverters connected in parallel across an input power supply to drive one or more loads via one or more motors, the method comprising:
determining a circulation current demand for the inverters when the drive system is operating in regenerative mode, the circulating current demand being dependent on the regenerated power, wherein the circulating current demand is determined based on a motor torque and a motor speed;
setting a total current demand of the plurality of inverters, wherein the total current demand to be equal to the circulating current demand plus a braking current demand, wherein the braking current demand is proportional to a braking torque of the system; and
applying the total current demand to the inverters such that the regenerated power flows through the inverters and is dissipated by the inverters.