Permanent magnet motor

A permanent magnet motor and permanent magnet technology, applied in the field of permanent magnet motors, can solve the problems of limited speed regulation range, easy demagnetization of permanent magnet parts, etc., to achieve the effects of easy heat dissipation, enhanced mechanical performance, and suitable for high-speed operation

Active Publication Date: 2021-11-30
SHENYANG POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a permanent magnet motor to solve the problem that the air gap magnetic field in the permanent magnet motor is basically kept constant, the speed regulation range is limited and the technical problem that the permanent magnet parts are easy to demagnetize

Method used

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Embodiment Construction

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a spe...

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Abstract

The invention relates to the technical field of permanent magnet motors, in particular to a permanent magnet motor. The permanent magnet motor provided by the invention comprises a stator, a rotor, a central shaft and a casing; the central shaft is rotatably connected to the casing; both the rotor and the stator are arranged in the casing; the stator is connected to the casing; and the rotor is connected to the central shaft; the casing comprises a shell and side covers arranged at the two ends of the shell; the stator comprises a stator iron core and an armature winding arranged on the stator iron core; the stator iron core is connected to the shell, a first air gap is formed between the stator iron core and the rotor, the side covers are connected with permanent magnets and excitation windings, and second air gaps are formed between the permanent magnets and the rotor and between the excitation windings and the rotor. the excitation windings are adopted, so that the magnetic flux is adjustable; and the permanent magnets are arranged on the side covers, so that the rotor is simple in structure, the mechanical performance of the rotor is enhanced, the rotor is more suitable for high-speed operation, eddy current loss on the permanent magnets can be effectively reduced, and heat dissipation of the permanent magnets is facilitated.

Description

technical field [0001] The invention relates to the technical field of permanent magnet motors, in particular to a permanent magnet motor. Background technique [0002] In recent years, with the continuous improvement of the performance of rare earth permanent magnet materials, permanent magnet motors characterized by high efficiency and high power density have developed rapidly, and have been widely used in many industrial fields such as aviation, aerospace, ships, automobiles, and machine tools. The application not only significantly accelerates the pace of my country's industrial modernization, but also effectively promotes the realization of my country's energy-saving and emission-reduction strategic goals. However, due to the inherent characteristics of the permanent magnet material, the air gap magnetic field of the permanent magnet motor remains basically constant and cannot be adjusted after it is manufactured. Applications in the field of variable speed drives. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28H02K1/27H02K1/24H02K3/50H02K5/04
CPCH02K3/28H02K1/2713H02K1/243H02K3/50H02K5/04H02K2201/03Y02T10/64
Inventor 刘光伟张岳岳骞赵鑫于思洋张凤阁梅恬语
Owner SHENYANG POLYTECHNIC UNIV
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