Vehicle driving device and method thereof

A vehicle driving device, which is driven by a power supply unit, comprising:

• a three-phase motor comprising a first stator winding and a second stator winding, wherein the first stator winding is connected in parallel to the second stator winding, the first stator winding and the second stator winding are synchronized with each other, and each of the first stator winding and the second stator winding comprises a first-phase winding end, a second-phase winding end and a third-phase winding end;
• a first current sensor having a first end and a second end, wherein the first end of the first current sensor is coupled to the first-phase winding end of the first stator winding, and the first current sensor is configured to measure a first-phase current of the first stator winding;
• a second current sensor having a first end and a second end, wherein the first end of the second current sensor is coupled to the second-phase winding end of the first stator winding, and the second current sensor is configured to measure a second-phase current of the first stator winding;
• a first power module electrically connected to the power supply unit, the second end of the first current sensor, the second end of the second current sensor and the third-phase winding end of the first stator winding;
• and
• a second power module connected in parallel to the first power module and electrically connected to the power supply unit, and the first-phase winding end, the second-phase winding end and the third-phase winding end of the second stator winding;
• wherein a third-phase current of the first stator winding is generated according to a calculating procedure of the first-phase current and the second-phase current of the first stator winding;
• wherein a duty cycle between the first power module and the second power module is controlled according to a feedback compensation of the first-phase current, the second-phase current and the third-phase current of the first stator winding.