Axial flux motor structure using magnetic levitation force and rotational force
AssigneesHyundai Motor Company, Kia Corporation
InventorsHyung Kwan Jang, Hoo Dam Lee, Gyeong Sik Choe, Byung Ho Min, Tae Gyu Lee
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Abstract
An axial flux motor structure uses a magnetic levitation force and a rotational force and includes a stator configured so that a coil unit is wound therearound, a permanent magnet unit configured to generate an air gap by generating a repulsive force with the coil unit, and a rotor configured to be fastened to the permanent magnet unit and coupled to a rotary shaft to rotate. A ratio of the number of slots of the stator and the number of poles of the rotor is 3:1.
Claims6
An axial flux motor structure using a magnetic levitation force and a rotational force, the axial flux motor structure comprising:
- a stator configured so that a coil unit is wound therearound;
- a permanent magnet unit configured to generate an air gap by generating a repulsive force with the coil unit;
- a rotor configured to be fastened to the permanent magnet unit and coupled to a rotary shaft to rotate;
- and
- a bearing unit configured to rotatably couple the rotor to the rotary shaft and support the rotor,
- wherein a ratio of the number of slots of the stator and the number of poles of the rotor satisfies 3:1,
- wherein the coil unit includes:
- a rotation coil configured to generate a rotational force through interaction with the permanent magnet unit to rotate the rotor;
- and
- a levitation coil configured to levitate the rotor with attractive and repulsive forces according to a vertical position of the stator that interacts with the permanent magnet unit, and
- wherein the rotation coil and the levitation coil are located in a same level of the number of slots of the stator.
Dependencies are inferred from the claim text.