Permanent magnet axial magnetic flux magnetic levitation motor and fan

Abstract

The invention provides a permanent magnet axial magnetic flux magnetic levitation motor and a fan. The motor comprises an inner stator, an outer stator, an inner winding, an outer winding, a permanentmagnet, a base and a rotor core. The stator core comprises an inner stator and an outer stator and is of a disc-shaped structure formed by winding a silicon steel sheet and slotting a single side, and a permanent magnet is embedded between the inner stator and the outer stator. And an inner winding and an outer winding are respectively embedded in the slots of the inner stator and the outer stator. The rotor core is formed by processing a whole piece of solid steel, the whole rotor core is of a disc structure, protrusions are processed on the side facing the stator, and magnetic poles are formed after the rotor core is magnetized by the permanent magnets. Stable axial suspension force is generated by utilizing a magnetic circuit structure of the permanent magnet and axial magnetic flux, stable radial suspension force is generated by utilizing independent control of the two sets of windings, the swing problem and the gravity influence of the fan rotating body in the rotating process are solved, and the suspension force is used for replacing a bearing; the permanent magnet synchronous motor is adopted to replace a traditional asynchronous motor, and a high power factor and a good speed regulation range are achieved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a permanent magnet axial flux magnetic levitation motor and a fan. Background technique [0002] With the development of motor suspension technology and the research of new topological structures, more and more new processes and technologies have been applied to traditional fans. For traditional ceiling-mounted fans, factors such as blade eccentricity and lateral disturbance will cause the motor axis to deflect. This kind of tiny unbalanced deflection has caused pressure and damage to the bearing for a long time, which makes the bearing resistance increase, abnormal noise occurs, and in severe cases, it can cause it to be unusable. The magnetic levitation technology in the motor solves the problem of vulnerable bearings well. Through the cooperation of permanent magnets and windings, the rotor is suspended by non-contact electromagnetic force, thereby eliminating the need for bea...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a permanent magnet axial flux magnetic levitation motor, which is small in size, adopts axial flux, and has a topological structure of two sets of windings, and utilizes the unilateral magnetic pull of the axial flux motor and the iron core of the stator and rotor The principle of minimum inter-magnetic resistance realizes magnetic levitation, and at the same time makes the motor structure flatter, solves the problem of easy wear of bearings, and has a high power factor and a wide speed range

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