Rotating electric machine, controller, vehicle system, and maintenance method of rotating electric machine
AssigneeDenso Corporation
InventorsMinoru Ishida, Naoki Katayama, Tsubasa Sakuishi, Yuki Takahashi
Life of this patent
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Abstract
A rotating electric machine includes a rotor rotatably supported and also including a magnet portion; a stator including a stator winding; and a plunger configured to displace the rotor and the stator relative to one another along an axial direction of the rotating electric machine. The stator includes a slotless structure in which at least one of no magnetic teeth and slot is provided. Thus, an attracting force acting between the magnet portion and the stator is weakened, thereby the rotor and the stator are easily displaceable relative to each other by the plunger.
Claims13
A rotating electric machine, comprising:
- a rotatably-supported rotor including a magnet portion;
- a stator arranged radially inside of the rotor and including a stator winding;
- and
- a displacement mechanism configured to move the rotor and the stator relative to one another in an axial direction along a rotation shaft of the rotor, wherein
- the stator is configured as a slotless structure in which at least one of no magnetic teeth or slot is provided, and
- wherein the displacement mechanism is configured to move the rotor and the stator relative to one another so as to be in non-facing positions where the stator does not face the rotor.
A controller of a vehicle including a rotating electric machine configured to provide a travel power of the vehicle, the rotating electric machine including:
- (i) a rotor rotatably supported and further including a magnet portion;
- (ii) a stator being arranged radially inside of the rotor, having a stator winding, and including a slotless structure in which at least one of no magnetic teeth and slot is provided;
- and (iii) a displacement mechanism configured to displace the rotor and the stator relative to one another in an axial direction along a rotation shaft of the rotor, the controller comprising:
- a state detector configured to detect a state of the vehicle;
- and
- a displacement control unit configured to control an operation of the displacement mechanism for setting a preset facing state of the rotor and the stator according to the state of the vehicle,
- wherein the displacement control unit is configured to control operation of the displacement mechanism to set the rotor and the stator to non-facing positions where the stator does not face the rotor.
A vehicle system comprising:
- a rotating electric machine configured to provide a source of travel power of a vehicle and including:
- a rotor rotatably supported and including a magnet portion;
- a stator arranged radially inside of the rotor and including a stator winding having a slotless structure in which at least one of no magnetic teeth and slot is provided;
- a displacement mechanism configured to cause a relative displacement of the rotor and the stator in an axial direction along a rotation shaft of the rotor;
- and
- a controller comprising:
- a state detector configured to detect a state of the vehicle;
- and
- a displacement control unit configured to set a preset facing state of the rotor and the stator according to the state of the vehicle by controlling an operation of the displacement mechanism,
- wherein the displacement control unit of the controller is configured to control operation of the displacement mechanism to set the rotor and the stator to non-facing positions where the stator does not face the rotor.
A method of maintaining a rotating electric machine, the rotating electric machine including:
- (i) a rotor rotatably supported and including a magnet portion;
- (ii) a stator arranged radially inside of the rotor and including a stator winding having a slotless structure in which at least one of no magnetic teeth and slot is provided;
- and (iii) a displacement mechanism configured to displace the rotor and the stator relative to one another in an axial direction along a rotation shaft of the rotating electric machine, the method comprising:
- removing the rotating electric machine;
- and
- operating the displacement mechanism to displace the rotor and the stator away from each other to be put in non-facing positions where the stator does not face the rotor.
Dependencies are inferred from the claim text.