Patent ID: 11916504
Assignee: BYD COMPANY LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 9:
10. The energy conversion device according to claim 1, comprising a controller which is connected with the reversible PWM rectifier and the controller is configured to:
acquire, according to an external control signal, a target heating power that needs to be generated by the motor coil;
obtain a target resultant current vector of each set of the winding unit according to the target heating power;
acquire a target direct axis current of each set of the winding unit on the direct axis of the synchronous rotating reference frame and acquire a target quadrature axis current of each set of the winding unit on the quadrature axis of the synchronous rotating reference frame according to the target resultant current vector; and
acquire an actual direct axis current of each set of the winding unit on the direct axis of the synchronous rotating reference frame and acquire an actual quadrature axis current of each set of the winding unit on the quadrature axis of the synchronous rotating reference frame according to a sampling current value of each set of the winding unit, and acquire a duty cycle of each phase bridge arm of the reversible PWM rectifier connected with each set of the winding unit according to the target quadrature axis current, the target direct axis current, the actual quadrature axis current, and the actual direct axis current.