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

Claim 0:
1. An energy conversion device, comprising a reversible pulse-width modulation (PWM) rectifier and a motor coil, wherein
the motor coil comprises L sets of winding units, each set of winding unit is connected with the reversible PWM rectifier, and L≥2 and is a positive integer;
at least two sets of heating circuits of a to-be-heated device comprise an external power supply, the reversible PWM rectifier, and the winding units in the motor coil; and
the energy conversion device controls the reversible PWM rectifier according to a control signal, so that a current outputted from the external power supply flows through at least two sets of the winding units of the motor coil to generate heat, and a vector sum of resultant current vectors of the at least two sets of the winding units on a quadrature axis of a synchronous rotating reference frame based on motor rotor field orientation is zero.