Large power disc-type permanent motor stator

Abstract

The invention relates to the field of motors and particularly relates to a large power disc-type permanent motor stator. The motor stator comprises an annular iron core which is arranged inside an end cover; the annular iron core is composed of a plurality of monomer iron cores; and the plurality of monomer iron cores are in detachable connection; and monomer stator windings are arranged on the plurality of monomer iron cores respectively. As a combination mode is adopted by the stator, when any one of the monomer iron core has faults, other monomer iron cores can work continuously, so that the overall use of a permanent motor is not affected, and the reliability of the motor is increased greatly; on condition that the performance of a large power excitation motor is achieved, the use of varnished wires is reduced, and the size and the weight of the motor are reduced greatly; and meanwhile, as the combination mode is adopted for the stator iron core, the material waste is avoided, and moreover, the production cost of the permanent motor is reduced greatly; and when one monomer stator has faults, only the monomer stator having faults needs to be changed, so that the maintenance cost is reduced greatly.

Description

technical field [0001] The invention relates to the field of motors, in particular to a stator of a high-power disc permanent magnet motor. [0002] Background technique [0003] High-power permanent magnet motors generally refer to magneto motors with a power above 15KW, and medium-sized permanent magnet motors generally refer to permanent magnet motors with a power of 10-25KW. At present, most foreign high-power disc permanent magnet motors are restricted from exporting to China, while domestic high-performance permanent magnets are very few, and the price is quite expensive, which leads to the fact that the current domestic medium and high-power permanent magnet motors are basically still in the traditional excitation stage. , because the enameled wire used in this excitation motor is generally about 10 times that of the permanent magnet motor of the same power, so that the volume and weight of this excitation motor are very large, and the production, transportation and ...

AI Technical Summary

Problems solved by technology

At present, most foreign high-power disc permanent magnet motors are restricted from exporting to China, while domestic high-performance permanent magnets are very few, and the price is quite expensive, which leads to the fact that the current domestic medium and high-power permanent magnet motors are basically still in the traditional excitation stage. , because the enameled wire used in this excitation motor is generally about 10 times that of the permanent magnet motor of the same power, so that the volume and weight of this excitation motor are very large, and the production, transportation and installation are very inconvenient; the existing disc permanent magnet The motor solves the technical problem that the volume and weight of the excitation motor are very large, and the production, transportation and installation are very inconvenient; in addition, the stator of the medium and high-power permanent magnet motor is generally wound with an integral iron core, and then installed on the motor In the end cover, this makes this kind of medium and high-power permanent magnet motor have the following defects: 1. The integral iron core is adopted. When the stator winding is partially damaged, it cannot be repaired, so that the entire stator is scrapped and can only be replaced as a whole. Greatly increased the after-sales maintenance cost; 2. The diameter of the stator iron core of the medium and high-power permanent magnet motor is relatively large, and the cost of the mold for making the integral iron core is also very expensive. Reasonable use leads to serious waste of materials, and at the same time, it also greatly increases the production cost of medium and high-power permanent magnet motors; 3. When the stator is partially faulty or damaged, the entire motor system will completely fail and cannot operate normally. Unforeseen losses may be caused at critical moments; 4. For high-power disc permanent magnet motors, the cross-sectional area of ​​copper wires is large, which makes the manufacturability worse

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