US 12,034,392 B2
Apparatus and method for driving motor
Yong Jae Lee, Yongin-Si (KR); Kang Ho Jeong, Hwaseong-Si (KR); Young Seul Lim, Seoul (KR); Jae Hoon Shim, Seoul (KR); and Jung Ik Ha, Seoul (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Seoul National University R&DB Foundation, Seoul (KR)
Filed on Jul. 11, 2022, as Appl. No. 17/861,493.
Claims priority of application No. 10-2021-0113462 (KR), filed on Aug. 26, 2021.
Prior Publication US 2023/0073159 A1, Mar. 9, 2023
Int. Cl. H02P 27/08 (2006.01); H02M 1/38 (2007.01); H02M 7/5395 (2006.01)
CPC H02P 27/08 (2013.01) [H02M 1/38 (2013.01); H02M 7/5395 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for driving a motor, the apparatus comprising:
a first inverter including a plurality of first switching elements and connected to a first end of each of windings respectively corresponding to a plurality of phases of the motor;
a second inverter including a plurality of second switching elements and connected to a second end of each of the windings;
a plurality of switches including first ends respectively connected to nodes to which the plurality of windings and the plurality of second switching elements are respectively connected and second ends connected to each other; and
a controller configured to drive the motor in one of a first driving mode for driving the motor by maintaining the plurality of second switching elements in an open state and performing pulse width modulation control for the plurality of first switching elements and a second driving mode for driving the motor by performing pulse width modulation control for the plurality of first switching elements and the plurality of second switching elements and to apply a dead time in which a state in which all of the plurality of second switching elements and the plurality of switches are turned off is maintained for a preset time at a time of switching between the first driving mode and the second driving mode.