Patent ID: 11909343
Assignee: HYUNDAI MOTOR COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 0:
1. A motor-driving apparatus for driving a motor having a plurality of windings corresponding to a plurality of phases, respectively, comprising:
a first inverter including a plurality of first switching devices and connected to first ends of the plurality of windings;
a second inverter including a plurality of second switching devices and connected to second ends of the plurality of windings;
a third switching device including a plurality of switching devices; and
a controller configured to adjust an on/off state of the first to third switching devices based on a required output of the motor,
wherein the plurality of switching devices have first-side ends respectively connected to the specific points of the plurality of windings, and second-side ends connected to each other, and
when the required output of the motor is greater than a preset reference value, the controller is configured to turn off the third switching device and drive the motor by performing pulse-width modulation control on the first switching device and the second switching device;
wherein each of the plurality of switching devices of the third switching device corresponds to different one of the plurality of phases, and
wherein each of the plurality of switching devices of the third switching device comprises a power semiconductor.