Compound amorphous alloy axial flux motor

Abstract

A composite amorphous alloy axial flux motor is provided. A plurality of inner tooth portions and an outer tooth portion of the stator are uniformly distributed on the stator yoke portion in the circumferential direction, the stator core is embedded in the housing, A DC excitation win is wound around that outer tooth portion, each outer tooth portion and the inner tooth portion inside of the outertooth portion are integrally wound with an armature winding, The rotor is mounted on a rotating shaft, A permanent magnet and a first soft pole are circumferentially uniformly mounted on a side of the rotor yoke close to the stator, A permanent magnet is in contact with the first soft pole, The permanent magnet and the first soft magnetic pole correspond to the circumferential position of the inner tooth part, the second soft magnetic pole corresponds to the circumferential position of the outer tooth part, the second soft magnetic pole is separated from the permanent magnet in the circumferential direction by a magnetic isolation region, end caps are respectively provided at both ends of the housing, and the rotating shaft of the motor is supported at the center of the end caps by bearings. The permanent magnet and the first soft magnetic pole correspond to the circumferential position of the inner tooth part. The invention not only inherits the characteristics of high power density,high torque density and high efficiency of the axial flux permanent magnet motor, but also has the advantages of smooth and adjustable air gap magnetic field of the electric excitation motor and thelike.

Description

technical field [0001] The invention belongs to the field of axial flux motors, and mainly relates to a composite amorphous alloy axial flux motor. Background technique [0002] Amorphous alloy strip is a new type of soft magnetic material, the strip thickness is only 0.02-0.03mm, it has excellent electromagnetic properties, good corrosion resistance, wear resistance, extremely high strength, hardness and resistivity and other characteristics. Compared with traditional silicon steel sheet, amorphous alloy has extremely small core loss, and its application as core material in motor can significantly improve the efficiency of the motor, especially for high-speed and high-frequency applications. Traditional amorphous alloy axial flux permanent magnet synchronous motors adopt a double-stator single-rotor or double-rotor single-stator structure with permanent magnet surface-mounted (or permanent magnet embedded in a non-magnetic metal disk). It has the advantages of high effici...

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Problems solved by technology

[0003] In order to pursue the high power torque density, high efficiency and controllable effect of the magnetic field of the motor, many researchers have proposed different types of topological structures in the form of mixed excitation to solve the problem that the magnetic field of the traditional permanent magnet synchronous motor is difficult to adjust and is not conducive to the weakening of the magnetic field. and other issues, but there are still defects in varying degrees:

The feature of this invention is: by changing the current amplitude and direction in the magnetic field control winding to adjust the total magnetic flux of the air gap of the motor, so as to achieve the purpose of changing the magnitude of the induced electric potential, but the motor with this structure consumes a large amount of permanent magnets, and the speed of the weak magnetic field increases. relatively limited range

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