Patent ID: 11936318
Assignee: KIA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 7:
8. A charging method using a motor driving system, the charging method comprising:
determining, by a controller, an operation mode as one of a motor driving mode and a charging mode, the motor driving mode being operated for driving a motor by controlling switching elements in an inverter to change D.C. voltage into A.C. voltage and supplying the A.C. voltage to the motor, and the charging mode being operated for charging a battery by controlling the switching elements in the inverter to change magnitude of charging voltage supplied to a neutral point of the motor and to output the charging voltage to the battery connected to the inverter;
generating, by the controller, a pulse width modulation signal provided for controlling the switching elements; and
adjusting, by the controller, in a gate driving circuit, an ascending inclination and a descending inclination of the pulse width modulation signal generated in response to the determined operation mode, generating a gate signal, and providing the gate signal to gates of the switching elements,
wherein switching speeds of the switching elements in the charging mode are slower than switching speeds of the switching elements in the motor driving mode.