Electric vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakashi Ota
Life of this patent
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Abstract
An electric vehicle includes: a synchronous motor; an induction motor; and a control unit configured to adjust a torque from the synchronous motor and a torque from the induction motor, wherein the control unit includes a torque varying device configured to reduce an output torque from the synchronous motor while maintaining a total drive force of the electric vehicle, and increasing an output torque from the induction motor in the case where the electric vehicle is stopped in a state in which a torque is output from the synchronous motor. Accordingly, there is provided an electric vehicle capable of restraining deterioration of drivability and performing thermal protection of a motor and a control unit.
Claims13
An electric vehicle comprising:
- a synchronous motor for driving the electric vehicle;
- an induction motor for driving the electric vehicle;
- and
- a control unit configured to adjust a torque from the synchronous motor and a torque from the induction motor, wherein
- the control unit includes a torque conversion program configured to maintain or reduce an output torque from the synchronous motor and increase an output torque from the induction motor while maintaining a total drive force of the electric vehicle when the electric vehicle is stopped in a state in which a torque command of the synchronous motor is greater than zero.
An electric vehicle comprising:
- a synchronous motor for driving the electric vehicle;
- an induction motor for driving the electric vehicle;
- and
- a control unit including a CPU, and configured to adjust a torque from the synchronous motor and a torque from the induction motor, wherein
- the control unit executes a torque conversion program that, when executed by the CPU, reduces or maintains an output torque from the synchronous motor and increases an output torque from the induction motor while maintaining a total drive force of the electric vehicle when the electric vehicle is stopped in a state in which a torque command of the synchronous motor is greater than zero.
A method of controlling an electric vehicle including:
- a synchronous motor for driving the electric vehicle;
- an induction motor for driving the electric vehicle;
- and
- a control unit configured to adjust a torque from the synchronous motor and a torque from the induction motor, comprising:
- reducing or maintaining an output torque from the synchronous motor and increasing an output torque from the induction motor while maintaining a total drive force of the electric vehicle when the electric vehicle is stopped in a state in which a torque command of the synchronous motor is greater than zero.
Dependencies are inferred from the claim text.