US 12,304,577 B2
Rotating machine control device and electric power steering device
Tomohiro Tamaru, Tokyo (JP); Tatsuya Mori, Tokyo (JP); and Chiaki Fujimoto, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 18/269,682
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Apr. 16, 2021, PCT No. PCT/JP2021/015673
§ 371(c)(1), (2) Date Jun. 26, 2023,
PCT Pub. No. WO2022/219794, PCT Pub. Date Oct. 20, 2022.
Prior Publication US 2024/0067258 A1, Feb. 29, 2024
Int. Cl. B62D 5/04 (2006.01); H02P 21/22 (2016.01); H02P 25/22 (2006.01); H02P 27/08 (2006.01)
CPC B62D 5/0463 (2013.01) [H02P 21/22 (2016.02); H02P 25/22 (2013.01); H02P 27/08 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A rotating machine control device comprising:
a first inverter that applies an alternating-current voltage to three-phase windings of a first system included in a rotating machine, based on a first direct-current voltage that has been output from a direct-current power supply of the first system;
a second inverter that applies an alternating-current voltage to three-phase windings of a second system included in the rotating machine, based on a second direct-current voltage that has been output from a direct-current power supply of the second system;
a first controller that generates a command value to the first inverter, based on a command value of the rotating machine, the first direct-current voltage, and the second direct-current voltage; and
a second controller that generates a command value to the second inverter, based on the command value of the rotating machine, the first direct-current voltage, and the second direct-current voltage, wherein
the first controller and the second controller each limit an own system voltage command related to a voltage to be applied to the three-phase windings of an own system by use of a direct-current voltage of an other system, in a case where a direct-current voltage of the own system is higher than the direct-current voltage of the other system, and also generate a value obtained by normalizing the own system voltage command by use of the direct-current voltage of the own system, as a command value to an inverter of the own system.