Rotational electric machine and a vehicle loaded therewith

A rotational electric machine comprising:

• a stator having windings;
• and
• a split rotor rotatably disposed on an inner circumferential side of said stator through an air gap and axially divided into two rotor portions, said rotor portions having different-polarity field magnets disposed alternately in a rotational direction;
• one of said rotor portions including a changing mechanism for changing a phase of synthesized magnetic poles of said field magnets relative to that of magnetic poles of the other rotor portion in accordance with a direction of torque of said rotor;
• said one rotor portion being supported from axially opposite sides by a support mechanism.

A rotational electric machine comprising:

• a stator having windings;
• and
• a split rotor rotatably disposed on an inner circumferential side of said stator through an air gap and axially divided into two rotor portions, said rotor portions having different-polarity field magnets disposed alternately in a rotational direction;
• one of said rotor portions including a changing mechanism for changing an axial position of said one rotor portion relative to that of the other rotor portion while shifting a magnetic pole center of said field magnets disposed in said one rotor portion and another magnetic pole center of said field magnets disposed in said other rotor portion in accordance with a direction of torque of said rotor, said one rotor portion being supported from axially opposite sides by a support mechanism.

A rotational electric machine comprising:

• a stator having windings;
• and
• a split rotor rotatably disposed on an inner circumferential side of said stator through an air gap and axially divided into two rotor portions, said rotor portions having different-polarity field magnets disposed alternately in a rotational direction;
• one of said rotor portions including a changing mechanism for changing a phase of synthesized magnetic poles of said field magnets relative to that of magnetic poles of said field magnets of the other rotor portion while shifting a magnetic pole center of said field magnets disposed in said one rotor portion and another magnetic pole center of said field magnets disposed in said other rotor portion in accordance with a direction of torque of said rotor, said one rotor portion being supported from axially opposite sides by a support mechanism.

A rotational electric machine comprising:

• a stator having windings;
• and
• a split rotor rotatably disposed on an inner circumferential side of said stator through an air gap and axially divided into two rotor portions, said rotor portions having different-polarity field magnets disposed alternately in a rotational direction;
• one of said rotor portions including a changing mechanism for changing an axial position of said one rotor portion relative to that of the other rotor portion while truing up a magnetic pole center of said field magnets disposed in said one rotor portion and another magnetic pole center of said field magnets disposed in said other rotor portion in accordance with a direction of torque of said rotor, said one rotor portion being supported from axially opposite sides by a support mechanism.

A rotational electric machine comprising:

• a stator having windings;
• and
• a split rotor rotatably disposed on an inner circumferential side of said stator through an air gap and axially divided into two rotor portions, said rotor portions having different-polarity field magnets disposed alternately in a rotational direction;
• one of said rotor portions including a changing mechanism for changing a phase of synthesized magnetic poles of said field magnets relative to that of magnetic poles of said field magnets of the other rotor portion while truing up a magnetic pole center of said field magnets disposed in said one rotor portion and another magnetic pole center of said field magnets disposed in said other rotor portion in accordance with a direction of torque of said rotor, said one rotor portion being supported from axially opposite sides by a support mechanism.

A rotational electric machine comprising:

• a stator having windings;
• a rotor having field magnets, said field magnets being constituted by a first field magnet having different-polarity magnetic poles arranged successively in a rotational direction and a second field magnet being rotatable relative to said first field magnet and having different-polarity magnetic poles arranged successively in said rotational direction;
• said first and second field magnets being provided opposite to magnetic poles of said stator and having a mechanism for changing a phase of synthesized magnetic poles of said first and second field magnets relative to that of magnetic poles of said first field magnet in accordance with a direction of torque of said rotor;
• said mechanism for changing the phase in accordance with the direction of torque having means for truing up a magnetic pole center of said first field magnet and another magnetic pole center of said second field magnet on a basis of balance between the direction of torque generated in said rotor and magnetic action force between said first and second field magnets, and means for shifting the magnetic pole centers of said first and second field magnets whenever the direction of torque generated in said rotor is inverted;
• said second field magnet being supported from axially opposite sides by a support mechanism.