Salient-pole halbach composite array and permanent magnet motor

Abstract

The invention belongs to the field of motors and electrical appliances, and specifically relates to a salient-pole halbach composite array and a permanent magnet motor. A salient-pole halbach composite array comprises a halbach magnet array, the salient-pole halbach composite array comprises a single-layer salient-pole halbach composite array and / or a double-layer halbach composite layer, the surface of a salient-pole magnet array is tightly attached to a halbach magnet array to form the single-layer salient-pole halbach composite array, and surfaces at two sides of the salient-pole magnet array are respectively provided with halbach magnet arrays to form the double-layer salient-pole halbach composite layer, and the salient-pole halbach composite array and a corresponding secondary to form the permanent magnet motor. According to the salient-pole halbach composite array and the permanent magnet motor, the characteristic of small magnetism leakage in a weak-magnetism area of the halbach magnet array is employed, the salient-pole magnet array is tightly attached to the halbach magnet array, the salient-pole halbach permanent magnet motor is formed by the cooperation of the salient-pole magnet array and the electrified winding, magnetism leakage of the salient-pole magnet array is greatly reduced or even completely eliminated, the size and the manufacturing usage cost of the motor can be greatly reduced, and the salient-pole halbach composite array and the permanent magnet motor are especially applicable to occasions of long-stroke, high-power, and high-thrust linear motor engineering application, and the bottleneck problem of engineering application of the linear motor is well solved.

Description

technical field [0001] The invention belongs to the field of motors and electrical appliances, and in particular relates to a salient pole halbach composite array and a permanent magnet motor. Background technique [0002] Permanent magnet linear motors have been widely used in various industries. Such as linear motor maglev train, direct drive elevator, linear motor automatic assembly line and many other application fields and occasions. There are many types of permanent magnet linear motors. According to the structure, it can be divided into four types: plane type, cylindrical type (tube type) and arc type. According to the arrangement of mover permanent magnets, it can be divided into hidden pole type, salient pole type, mixed type, etc. According to the primary arrangement method, it can also be divided into three types: bilateral type, unilateral type and compound type. In the existing hidden pole type and salient pole type permanent magnet linear motor structure, th...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is the engineering application bottleneck problem of the existing linear motor with low output power, small thrust / weight ratio, low power index, large volume and high cost. In order to solve the above problems, a salient pole halbach composite array and permanent magnet motor

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