Rotary electric machine

A rotary electric machine comprising:

• a rotor including a plurality of first rotor magnetic Pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• each of the first rotor magnetic pole sections is composed of a first magnet disposed on the cylinder surface of the rotor core and magnetized in the radial direction;
• and
• each of the second rotor magnetic pole sections is composed of a second magnet embedded in the rotor core and magnetized in the rotating axis direction;
• the rotor core is sandwiched between both end parts, in the rotating axis direction, of a plurality of magnets each having a cross section which is integrally formed in the shape of a substantially cornered letter C;
• a middle part of each of the plurality of magnets along the rotating axis direction constitutes the first magnet;
• and
• the both end parts of each of the plurality of magnets in the rotating axis direction constitute the second magnet.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first rotor magnetic pole sections are composed of a first magnet embedded in the rotor core and magnetized in the radial direction;
• the second rotor magnetic pole sections are composed of a second magnet embedded in the rotor core and magnetized in the rotating axis direction;
• a plurality of magnets each of which is integrally formed and inserted into a hole provided in the rotating axis direction;
• a middle part of each of the plurality of magnets along the rotating axis direction constitutes the first magnet;
• and
• both end parts of each of the plurality of the magnets in the rotating axis direction constitute the second magnet.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• each of the first rotor magnetic pole sections is composed of a first ferromagnetic material that forms the rotor core and has a magnetic property of a salient pole in the radial direction;
• each of the second rotor magnetic pole sections is composed of a second ferromagnetic material that forms the rotor core and has the magnetic property of a salient pole in the rotating axis direction;
• the first ferromagnetic material includes at least one type of first cavities, each of which is formed in the rotating axis direction, disposed along the radial direction;
• and
• the second ferromagnetic material includes at least one type of second cavities, each of which is formed in the radial direction, disposed along the rotating axis direction.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• each of the first rotor magnetic pole sections is composed of a first ferromagnetic material that forms the rotor core and protrudes from the cylinder surface in a direction toward the first stator magnetic pole sections;
• each of the second rotor magnetic pole sections is composed of a second ferromagnetic material that forms the rotor core, protrudes from the cylinder end face in a direction toward the second stator magnetic pole sections, and has a magnetic property of a salient pole in the rotating axis direction;
• the rotor core has, on a plurality of locations along the circumferential direction, a protrusion that protrudes in both the radial direction and the rotating axis direction from the locations along the circumferential direction, in which a part of the protrusion protruding in the radial direction constitutes the first ferromagnetic material, while a part of the protrusion protruding in the rotating axis direction constitutes the second ferromagnetic material;
• the first stator magnetic pole sections are configured so as to protrude in a direction toward the first rotor magnetic pole sections;
• and
• the second stator magnetic pole sections are configured so as to protrude in a direction toward the second rotor magnetic pole sections.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the second rotor magnetic pole sections include a magnet;
• the first rotor magnetic pole sections are composed of only a ferromagnetic material for forming the rotor core, and
• the rotor core has, in the vicinity of its both ends in the rotating axis direction, a cavity that continues in the radial direction extending from the cylinder surface toward an inner circumference direction in parallel with the cylinder end face.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first rotor magnetic pole sections include are composed of a magnet embedded in the rotor core and magnetized in the radial direction;
• the second rotor magnetic pole sections include ferromagnetic material that forms the rotor core and has a magnetic property of a salient pole in the rotating axis direction;
• and
• the magnet constituting the first rotor magnetic pole sections and a part of the ferromagnetic material constituting the second rotor magnetic pole sections are disposed on the same location in the radial direction.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first rotor magnetic pole sections include a magnet embedded in the rotor core and magnetized in the radial direction;
• the second rotor magnetic pole sections include a ferromagnetic material that forms the rotor core and has a magnetic property of a salient pole in the rotating axis direction;
• the rotor core includes at least one type of cavities in which a first continuous section of each of the cavities that continues in the rotating axis direction is connected to a second continuous section of each of the cavities that continues in the radial direction;
• the ferromagnetic material is situated on a region including the second continuous section of the rotor core;
• and
• the magnet is inserted into the first continuous section that continues in the rotating axis direction.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first rotor magnetic pole sections include a magnet embedded in the rotor core and magnetized in the radial direction;
• the second rotor magnetic pole sections include a ferromagnetic material that forms the rotor core and has a magnetic property of a salient Dole in the rotating axis direction;
• the ferromagnetic material includes at least one type of slits, each of which is formed in the radial direction, disposed along the rotating axis direction;
• and
• the magnet is disposed on an outer circumference side of the slits.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first rotor magnetic pole sections are composed of a magnet disposed on the cylinder surface of the rotor core and magnetized in the radial direction;
• the second rotor magnetic pole sections are composed of a ferromagnetic material that forms the rotor core and has ha magnetic property of a salient pole in the rotating axis direction;
• and
• the cylinder end face of the rotor core constituting the second rotor magnetic pole sections is a flat surface aligned, in the rotating axis direction, with an axial end face of the magnet in the rotating axis direction.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the second rotor magnetic pole sections are composed of a ferromagnetic material that forms the rotor core and has a magnetic property of a salient pole in the rotating axis direction;
• and
• the ferromagnetic material includes at least one type of slits, each of which is formed in the radial direction, disposed along the rotating axis direction.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first rotor magnetic pole sections are composed of either a ferromagnetic material that has a magnetic property of a salient pole in the radial direction or a magnet that is disposed on the cylinder surface of the rotor core and magnetized in the radial direction;
• the second rotor magnetic pole sections are composed of either a second magnet that is disposed on the cylinder end face of the rotor core and magnetized in the rotating axis direction or a ferromagnetic material that forms the rotor core and has the magnetic property of a salient pole in the rotating axis direction;
• and
• the first rotor magnetic pole sections are placed on locations shifted by an electrical angle of 45 degrees relative to placement locations of the second rotor magnetic pole sections.

A rotary electric machine, comprising

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• and
• the stator has a cooling water channel in a joint part between the plurality of first stator magnetic pole sections and the plurality of second stator magnetic pole sections.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first stator magnetic pole sections comprise,
• a first tooth disposed along the rotating axis direction of the rotor, and
• a first coil wound around the first tooth;
• and
• the second stator magnetic pole sections comprise,
• a second tooth disposed along the radial direction of the rotor, and
• a second coil wound around the second tooth;
• the first tooth is integrally formed with the second tooth;
• and
• the first coil is integrally wound with the second coil around the first and second teeth.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic Dole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first stator magnetic pole sections include a first stator core composed of a plurality of ferromagnetic members laminated along the rotating axis direction;
• the second stator magnetic pole sections include a second stator core composed of a plurality of ferromagnetic members laminated along the radial direction;
• and
• a joint part between the first stator magnetic pole sections and the second stator magnetic pole sections is composed of a magnetic dust material.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first rotor magnetic pole sections include a first rotor core composed of a plurality of ferromagnetic members laminated along the rotating axis direction;
• the second rotor magnetic pole sections include a second rotor core composed of a plurality of ferromagnetic members laminated along the radial direction, and
• a joint part between the first rotor magnetic pole sections and the second rotor magnetic pole sections is composed of a magnetic dust material.

A rotary electric machine, comprising:

• a rotor including a plurality of first rotor magnetic pole sections directed toward a radial direction, a plurality of second rotor magnetic pole sections directed toward a rotating axis direction, and a rotor core having a cylinder surface that encloses a rotating axis and a cylinder end face located on an end in the rotating axis direction;
• and
• a stator including a plurality of first stator magnetic pole sections which are opposed to the cylinder surface and disposed corresponding to the plurality of respective first rotor magnetic pole sections to generate magnetic flux in the radial direction, and a plurality of second stator magnetic pole sections which are opposed to the cylinder end face and disposed corresponding to the plurality of respective second rotor magnetic pole sections to generate magnetic flux in the rotating axis direction, wherein
• the rotor rotates freely relative to the stator upon receiving, at the Plurality of first and second rotor magnetic pole sections, magnetic flux from the plurality of respective first and second stator magnetic pole sections;
• the first stator magnetic pole sections include a first stator core composed of a plurality of ferromagnetic members laminated along the rotating axis direction;
• the second stator magnetic pole sections include a second stator core composed of a plurality of ferromagnetic members laminated along the radial direction;
• the first rotor magnetic pole sections include a first rotor core composed of a plurality of ferromagnetic members laminated along the rotating axis direction;
• the second rotor magnetic pole sections include a second rotor core composed of a plurality of ferromagnetic members laminated along the radial direction;
• and
• both a joint part between the first stator magnetic pole sections and the second stator magnetic pole sections and a joint part between the first rotor magnetic pole sections and the second rotor magnetic pole sections are composed of a magnetic dust material.