The present disclosure provides a rotor structure, a permanent magnet auxiliary synchronous reluctance motor and an electric vehicle. A rotor structure includes a rotor body. The rotor body has magnetic steel slot groups. Each of the magnetic steel slot groups includes an outer layer magnetic steel slot including: a first outer layer magnetic steel slot segment, a second outer layer magnetic steel slot segment, a first bent slot, and a second bent slot. The first outer layer magnetic steel slot segment and the second outer layer magnetic steel slot segment are arranged along a radial direction of the rotor body and are opposite to each other. Extended lines of a length directional geometric centerline of the first outer layer magnetic steel slot segment and a length directional geometric centerline of the second outer layer magnetic steel slot segment define a first angle.

Object: To provide a polyphase AC electric motor whereby partial discharge can be suppressed.

Resolution Means: The winding of each phase includes a first partial conductor that is an input side partial conductor; an nth partial conductor connected to a neutral point; and second to n-1th partial conductors. Moreover, a partial conductor disposed within the stator adjacent to the first partial conductor of each phase, or a partial conductor including a coil end portion disposed adjacent to a coil end portion where the first partial conductor extends out of the slot, is any of the following: (1) of the intermediate partial conductors, an ath (where a is a natural number greater than or equal to 2) partial conductor of the same phase or a different phase where voltage takes an extreme value when AC voltage is applied from the inverter; (2) any of an a-3th to a-1th partial conductors of the same phase or a different phase, or any of an a+1th to a+3th partial conductors of the same phase or a different phase connected to the intermediate partial conductor taking the extreme value; (3) any of a n-3th to nth partial conductors of the same phase or a different phase.

In an IPM motor according to one aspect of the present disclosure, in a magnet structure installed in a magnet hole, a first soft magnetic body is located outside a first permanent magnet in a radial direction. Since the first soft magnetic body has a higher electrical resistivity than the electrical resistivity of a rotor core, a situation where an eddy current occurs in the first soft magnetic body is suppressed. In the IPM motor, a deterioration in efficiency caused by an eddy current loss is suppressed, so that the efficiency is improved.

In an IPM motor according to one aspect of the present disclosure, in a magnet structure installed in a magnet hole, a first soft magnetic body is located outside a first permanent magnet in a radial direction. Since the first soft magnetic body has a higher electrical resistivity than the electrical resistivity of a rotor core, a situation where an eddy current occurs in the first soft magnetic body is suppressed. In the IPM motor, a deterioration in efficiency caused by an eddy current loss is suppressed, so that the efficiency is improved.

An electric machine includes a stator with stator slots securing therein electrically conductive windings. A rotor is rotatably mounted adjacent the stator and includes a stack of rotor laminates. Each laminate includes circumferentially spaced poles, each of which includes a magnet slot spaced from an insert slot. These laminate magnet slots cooperatively define the rotor's magnet slots. Likewise, the laminates' insert slots cooperatively define the rotor's insert slots. Magnets are mounted inside the rotor's magnet slots, and non-magnetic inserts are mounted inside the rotor's insert slots. One or more poles of each laminate includes a structural web that extends radially through the magnet and insert slots of that pole. Multiple poles of each rotor laminate lack a radially extending structural web. Each rotor laminate is rotated with respect to a neighboring rotor laminate such that each pole with a structural web axially aligns with a pole without a structural web.

An electric machine includes a stator with stator slots securing therein electrically conductive windings. A rotor is rotatably mounted adjacent the stator and includes a stack of rotor laminates. Each laminate includes circumferentially spaced poles, each of which includes a magnet slot spaced from an insert slot. These laminate magnet slots cooperatively define the rotor's magnet slots. Likewise, the laminates' insert slots cooperatively define the rotor's insert slots. Magnets are mounted inside the rotor's magnet slots, and non-magnetic inserts are mounted inside the rotor's insert slots. One or more poles of each laminate includes a structural web that extends radially through the magnet and insert slots of that pole. Multiple poles of each rotor laminate lack a radially extending structural web. Each rotor laminate is rotated with respect to a neighboring rotor laminate such that each pole with a structural web axially aligns with a pole without a structural web.

A rotor assembly for an electric motor includes a rotor core that is fabricated from a plurality of stacked laminations. The rotor core has a plurality of arcuately arranged, axially extending magnet receiving slots. The rotor core includes a plurality of magnets received in respective ones of the magnet receiving slots. The laminations include radially extending deflectable magnet retaining tabs that extend into the magnet receiving slots. The magnet retaining tabs engage and are deflected by a corresponding one of the magnets to exert a reactive force against the magnets.

In a rotor core and a motor including the rotor core, a rotor yoke includes magnetic pole core groups arranged in a circumferential direction and each including a magnetic conductor at a center and permanent magnets around the magnetic conductor. A center of each magnetic pole core group is defined by the magnetic conductor, so that the number of magnets used can be reduced to achieve low cost. The permanent magnets around the magnetic conductor increases a magnetic flux concentration effect while preventing magnetic flux leakage to achieve high efficiency and high performance.

A rotating electric machine , and an electric wheel using the rotating electric machine, has a rotatably supported rotor and a stator separated by a prescribed gap from the rotor, wherein the rotor has a magnetic pole ring formed from a circular permanent magnet, and a core piece embedded in the permanent magnet. The magnetic pole ring has outer and inner peripheral surfaces formed in a ring shape, wherein one of the outer peripheral surface and the inner peripheral surface is a gap-facing surface that faces the aforementioned gap, and the other is a non-gap-facing surface different from the gap-facing surface. The non-gap-facing surface of the magnetic pole ring is configured from the permanent magnet, the gap-facing surface of the magnetic pole ring is configured containing the permanent magnet and the exposed core piece, and the permanent magnet is magnetized such that the core piece is the magnetic center.

A motor includes a rotor and a stator. In a plane orthogonal to an axis direction of the rotor, the motor satisfies W2<W1<M1, and T1<W1<T1+2×T2, where M1 is a width of a surface of a permanent magnet, W1 is a maximum width of a portion of an inner wall of a first magnet insertion hole in contact with the surface, W2 is a minimum width from the first magnet insertion hole to a second magnet insertion hole, T1 is a width of a first front end surface of a first tooth, and T2 is a width from the first front end surface to a second front end surface of a second tooth.