US 12,240,334 B2
Vehicle control method and vehicle drive system
Kai Wang, Hefei (CN); and Wencheng Hong, Hefei (CN)
Assigned to Shanghai XPT Technology Limited, Shanghai (CN)
Filed by Shanghai XPT Technology Limited, Shanghai (CN)
Filed on Mar. 8, 2022, as Appl. No. 17/689,225.
Claims priority of application No. 202110257052.7 (CN), filed on Mar. 9, 2021; and application No. 202110258143.2 (CN), filed on Mar. 9, 2021.
Prior Publication US 2022/0289033 A1, Sep. 15, 2022
Int. Cl. B60L 3/00 (2019.01); B60L 50/52 (2019.01); H02P 6/10 (2006.01)
CPC B60L 3/0061 (2013.01) [B60L 3/003 (2013.01); B60L 3/0084 (2013.01); B60L 50/52 (2019.02); H02P 6/10 (2013.01); B60L 2210/10 (2013.01); B60L 2240/423 (2013.01)] 16 Claims
OG exemplary drawing
 
9. A vehicle drive system, utilized as a first DC-DC convertor and a second DC-DC convertor, comprising:
a motor, comprising:
a first three-phase winding, wherein the first three-phase winding is utilized as a first three-phase inductor of the first DC-DC convertor; and
a second three-phase winding, the second three-phase winding is utilized as a second three-phase inductor of the second DC-DC convertor; and
a motor control device, comprising a first three-phase inverter circuit, a second three-phase inverter circuit, a pulse width modulation controller and a processing circuit, wherein
the first three-phase inverter circuit is utilized as a first switching circuit of the first DC-DC convertor,
the second three-phase inverter circuit is utilized as a second switching circuit of the second DC-DC convertor,
the pulse width modulation controller is utilized for modulating a first three-phase current outputted by the first switching circuit to generate a first three-phase carrier wave, and modulating a second three-phase current outputted by the second switching circuit to generate a second three-phase carrier wave, and
the processing circuit sets a first composite carrier wave of the first three-phase carrier wave to be toward a first direction in a three-phase stationary coordinate and a second composite carrier wave of the second three-phase carrier wave to be toward a second direction in the three-phase stationary coordinate for controlling the torque ripple of the vehicle drive system.