Disc type permanent magnetic field modulation motor

Abstract

The invention relates to the technical field of motors, and provides a disc type permanent magnetic field modulation motor which comprises a stator, a first rotor, a plurality of pieces of second magnetic steel and armature windings. The stator comprises a plurality of stator teeth and a stator yoke, the stator teeth are connected to the stator yoke, and a stator slot is formed between every two adjacent stator teeth. The first rotor is coupled to the first side of the stator, and a first air gap is formed between the first rotor and the stator. The first rotor comprises a plurality of first rotor teeth and a plurality of first magnetic steels, and the first magnetic steels are distributed among the first rotor teeth. The plurality of pieces of second magnetic steel are distributed on the surface, close to the first side, of the stator teeth, and the number of the pieces of second magnetic steel is smaller than that of the stator teeth. The armature winding is arranged in the stator slot. By means of the magnetic steel arranged on the surfaces of the stator teeth, magnetic field modulation can be carried out under the condition of a single-layer air gap, a magnetic adjusting ring in a traditional magnetic gear composite motor is omitted, and the structure is simplified.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a disk-type permanent magnet magnetic field modulation motor. Background technique [0002] The low-speed high-torque transmission system has extremely wide application prospects in the fields of industrial production, oil field exploitation, wind power generation, port lifting and ship propulsion. At present, the traditional drive system of induction motor plus mechanical deceleration mechanism has disadvantages such as complex structure, easy wear of deceleration mechanism, leakage of lubricating oil, poor operation reliability, high maintenance cost and low overall efficiency of the system, which does not meet the requirements of economic development, energy saving and environmental protection. Require. [0003] If the magnetic gear compound motor is used, there are also certain defects. For example, the Chinese patent (publication number is CN108011484A) discloses a magnetic...

AI Technical Summary

Problems solved by technology

For example, the Chinese patent (publication number is CN108011484A) discloses a magnetic gear compound motor, which has air gaps between the outer stator and the modulating rotor, and between the modulating rotor and the inner rotor, that is, there are two layers of air gaps inside and outside, and the matching modulator The magnetic ring is used to modulate the magnetic field. Due to the large air gap, the utilization rate and power density of the permanent magnet steel of the motor are affected to a certain extent, and the overall structure is more complicated, and the processing technology is more difficult.

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