US 11,888,426 B2
Method of controlling braking of an multi-phase electrical motor
Philippe Farah, Bettanges-sur-Mess (LU); and Sebastien Stoltz-Douchet, Basse-Ham (FR)
Assigned to DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA, Bascharage (LU)
Appl. No. 17/597,517
Filed by BORGWARNER LUXEMBOURG AUTOMOTIVE SYSTEMS SA, Bascharage (LU)
PCT Filed Jul. 3, 2020, PCT No. PCT/EP2020/068798
§ 371(c)(1), (2) Date Jan. 10, 2022,
PCT Pub. No. WO2021/018514, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 1910888 (GB), filed on Jul. 31, 2019.
Prior Publication US 2022/0255472 A1, Aug. 11, 2022
Int. Cl. H02H 7/08 (2006.01); H02P 3/12 (2006.01); B60L 7/00 (2006.01); B60L 7/16 (2006.01); B60L 15/20 (2006.01); H02P 3/22 (2006.01)
CPC H02P 3/12 (2013.01) [B60L 7/003 (2013.01); B60L 7/16 (2013.01); B60L 15/2009 (2013.01); H02P 3/22 (2013.01); B60L 2220/58 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of braking in an electrically powered vehicle, said vehicle including a drive system which includes a multi-phase electric motor, said motor comprising at least one stator group; said stator group comprising a first stator arrangement including three coils in a first coil arrangement and a second stator arrangement including three coils in a second coil arrangement, said second coil arrangement being angularly offset from said first coil arrangement, and where,
said first stator arrangement is connected to respective low side and/or high side circuitry, including low side switches and/or high side switches for each of the said coils respectively, adapted to selectively allow current to flow through said respective coils of said first stator arrangement from a DC power source, and
where said second stator arrangement is connected to respective low side and/or high side circuitry, including a low side switches and/or high side switches for each of the said coils respectively, adapted to selectively allow current to flow through said respective coils of said second stator arrangement from a DC power source, said method comprising: for one or more of each group:
for both of said second or first stator arrangements, i) setting any two of said switches in said low side circuitry to a closed state and the other switch in an open state, and setting all the switches in the high side to an open state; and/or
ii) setting any two of said switches in said high side circuitry to a closed state and setting the other switch to an open state, and setting all the switches on the low side to an open state.