JP2007104888A5 - - Google Patents

Claims (18)

  An annular stator and a rotor rotatably arranged inside the stator, the stator having a stator core having an armature winding, and the rotor is made of a permanent magnet. A rotating electrical machine having a rotor core that is mounted and formed with a cooling hole through which a refrigerant passes, the cooling hole having a cross-sectional shape that is convex toward the outer peripheral side. . When D the outer diameter of the rotor, the maximum rotational speed N, and the thickness of the region between the inner circumference of the rotor and the cooling holes was Ti, Ti × 60 / (π × D × N) The rotating electrical machine according to claim 1, wherein ≧ 1.5 × 10 ⁻⁴ . Distance Wp between the permanent magnets in the magnetic pole formed along the outer periphery of the rotor core, when the minimum distance between said permanent magnet the cooling holes was Wm, Wm / Wp ≧ 0.60 The rotating electrical machine according to claim 1, wherein:   A cavity is provided along the flow of magnetic flux that generates reluctance torque on the side of the magnetic pole that generates reluctance torque formed along the outer periphery of the rotor core, and the magnetic pole crosses the magnetic flux in a direction that intersects the magnetic flux. The magnetic flux of the armature that passes through is canceled out by the permanent magnet inserted into the cavity, the leakage magnetic field at the end of the magnetic pole is suppressed, and unevenness is formed magnetically in the circumferential direction of the rotor core The rotating electrical machine according to claim 1, wherein:   An annular stator and a rotor rotatably arranged inside the stator, the stator having a stator core having an armature winding, and the rotor is made of a permanent magnet. A rotating electrical machine having a mounted rotor core, wherein the permanent magnet is divided so as to have a gap extending in the axial direction of the rotor, and a cooling passage through which the refrigerant passes. 6. The rotating electrical machine according to claim 5 , wherein a duct made of a material having thermal conductivity and rigidity is coaxially disposed in the gap so that an outer peripheral surface thereof is in contact with an inner surface of the gap. Claim, characterized in that a protrusion for supporting so as not to move in a direction perpendicular to the axial direction of each of the rotor divided portions of the permanent magnet protrudes into the gap from the rotor core 5 The rotating electrical machine described. An annular stator and a rotor rotatably disposed inside the stator, the stator having a stator core having an armature winding, the rotor being formed with a cavity; A rotor core in which a permanent magnet is inserted into the cavity, the permanent magnet is divided so as to have a gap extending in the axial direction of the rotor, and the gap serves as a cooling flow path through which the refrigerant passes. , at both ends of the cavity, prior SL to form a non-existent empty gap of the permanent magnet, the bypass cooling flow path to the other end of the cavity from one end of the cavity through the cooling channel rotary electric machine you characterized in that the formation of the. Wherein the rotor core, provided the cavity into a plurality of predetermined箇Tokoroso respectively were separated by equal intervals in the circumferential direction along the outer peripheral portion by two, the cavity of the one by two, the rotation 9. The rotating electrical machine according to claim 8, wherein the electric rotating machine is formed to have a V-shape that opens toward the outer peripheral portion of the core and has a gap facing the outer peripheral corner on the magnetic pole side of the permanent magnet. .   An annular stator and a rotor rotatably arranged inside the stator, the stator having a stator core having an armature winding, and the rotor is made of a permanent magnet. A rotating electrical machine having a cavity to be inserted and having a heat conductive sheet interposed between an inner surface of the cavity and the permanent magnet.   An annular stator and a rotor rotatably disposed inside the stator, the stator having a stator core having an armature winding, and the rotor in the axial direction A groove-shaped cooling flow path extending in the axial direction and passing through the refrigerant on the inner surface of the cavity that is in contact with the permanent magnet; and a permanent magnet inserted into contact with the inner surface of the cavity. Rotating electric machine. The rotating electrical machine according to claim 11 , wherein the refrigerant flow path is formed in a zigzag shape in an axial direction.   An annular stator and a rotor rotatably arranged inside the stator, the stator having a stator core having an armature winding, and the rotor is made of a permanent magnet. An annular rotor core that is mounted and formed with a cooling hole through which a coolant passes is formed, and a portion of the cooling hole that faces the inner peripheral side of the rotor core faces the inner peripheral side of the rotor core. A rotating electrical machine characterized by exhibiting a convex arcuate cross section.   An annular stator and a rotor rotatably arranged inside the stator, the stator having a stator core having an armature winding, and the rotor is made of a permanent magnet. An annular rotor core that is mounted and formed with a cooling hole through which a coolant passes is formed, and a portion of the cooling hole that faces the inner peripheral side of the rotor core is directed toward the outer peripheral side of the rotor core. A rotating electrical machine characterized by being formed to be convex and substantially parallel to the inner peripheral surface of the rotor core.   An annular stator, an annular rotor rotatably disposed inside the stator, and a rotor shaft disposed inside the rotor, the stator having an armature winding The rotor has an annular rotor core on which a permanent magnet is mounted, and a cut-out portion having a cross-sectional shape that protrudes from the inner peripheral surface toward the outer peripheral side. A rotating electrical machine is characterized in that a refrigerant flow path is formed by the notch and the outer peripheral surface of the rotor shaft.   An annular stator, an annular rotor rotatably disposed inside the stator, and a rotor shaft disposed inside the rotor, the stator having an armature winding The rotor has an annular rotor core on which a permanent magnet is mounted, and the rotor shaft has a notch having a cross-sectional shape that is convex from the outer peripheral surface toward the center side. The rotating electrical machine is characterized in that a refrigerant flow path is formed by the notch and the inner peripheral surface of the rotor core.   An annular stator, an annular rotor rotatably disposed inside the stator, and a rotor shaft disposed inside the rotor, the stator having an armature winding The rotor has an annular rotor core on which a permanent magnet is mounted, and the rotor shaft has a notch having a cross-sectional shape that is convex from the outer peripheral surface toward the center side. The rotor core has a cutout portion having a cross-sectional shape that protrudes from the inner peripheral surface toward the outer peripheral side, and the rotor shaft cutout portion and the rotor core cutout portion. Forming a refrigerant flow path by facing each other. A cavity is provided along the flow of magnetic flux that generates reluctance torque on the side of the magnetic pole that generates reluctance torque formed along the outer periphery of the rotor core, and the magnetic pole crosses the magnetic flux in a direction that intersects the magnetic flux. The magnetic flux of the armature that passes through is canceled out by the permanent magnet inserted into the cavity, the leakage magnetic field at the end of the magnetic pole is suppressed, and the unevenness is formed magnetically in the circumferential direction of the rotor core The rotating electric machine according to any one of claims 13 to 17 , wherein the rotating electric machine is characterized.