US 11,942,875 B2
Drive system
Takashi Kashiwazaki, Nisshin (JP); and Makoto Taniguchi, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on May 3, 2021, as Appl. No. 17/306,245.
Application 17/306,245 is a continuation of application No. PCT/JP2019/042676, filed on Oct. 30, 2019.
Claims priority of application No. 2018-208164 (JP), filed on Nov. 5, 2018.
Prior Publication US 2021/0257953 A1, Aug. 19, 2021
Int. Cl. H02P 6/14 (2016.01); H02M 1/08 (2006.01); H02M 7/493 (2007.01); H02M 7/5387 (2007.01); H02P 27/08 (2006.01); H02P 29/68 (2016.01); H02M 1/00 (2006.01)
CPC H02M 7/5387 (2013.01) [H02M 1/08 (2013.01); H02M 7/493 (2013.01); H02M 7/53871 (2013.01); H02P 27/08 (2013.01); H02P 29/68 (2016.02); H02M 1/0043 (2021.05)] 10 Claims
OG exemplary drawing
 
1. A drive system for a rotating electric machine system, the rotating electric machine system comprising:
a rotating electric machine including multi-phase windings, each of the multiphase windings having opposing first and second ends, and
a power storage device that performs at least one of a power receiving task and a power supplying task with respect to the rotating electric machine,
the drive system comprising:
a first inverter that includes a first series circuit for each of the multi-phase windings, the first series circuit comprising an upper arm switch and a lower arm switch connected in series thereto, a first connection point between the upper arm switch and the lower arm switch for each phase winding being connected to the first end of a corresponding one of the multi-phase windings;
a second inverter that includes a second series circuit for each of the multi-phase windings, the second series circuit comprising an upper arm switch and a lower arm switch connected in series thereto, a second connection point between the upper arm switch and the lower arm switch for each phase winding being connected to the second end of a corresponding one of the multi-phase windings;
a selection unit that performs selection between a first setting and a second setting, the first setting representing that the first inverter is set to a switch drive inverter and the second inverter is set to a neutral-point drive inverter, the second setting representing that the second inverter is set to the switch drive inverter and the first inverter is set to the neutral-point drive inverter; and
a drive control unit that performs:
a switch drive task of performing on-off driving of the upper arm switch and lower arm switch of the switch drive inverter selected by the selection unit to thereby perform one of receiving of output power from the rotating electrical machine and supply of input power to the rotating electrical machine; and
a neutral-point drive task of maintaining, in an on state, at least one of the upper arm switch and lower arm switch of the neural-point drive inverter selected by the selection unit.