Salient-pole halbach composite permanent magnet rotation motor

Abstract

The invention belongs to the field of motors and electrical appliances, and specifically relates to a salient-pole halbach composite permanent magnet rotation motor. The salient-pole halbach composite permanent magnet rotation motor comprises a rotor and a stator corresponding to the rotor, the rotor is formed by a salient-pole halbach composite 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 and tightly attached to at least one group of halbach magnet arrays to form the double-layer salient-pole halbach composite layer. According to the salient-pole halbach composite permanent magnet rotation motor, the characteristics of the halbach magnet array are employed, the salient-pole magnet array is arranged in a strong-magnetism area or a weak-magnetism area of the halbach magnet array, the salient-pole halbach permanent magnet motor is formed by the cooperation of the salient-pole magnet array and a stator winding, magnetism leakage of the salient-pole magnet array is greatly reduced or even completely eliminated, the power and output of the motor can be greatly increased with same size and manufacturing cost, or the size and the manufacturing usage cost of the motor can be greatly reduced with the same power, and the salient-pole halbach composite permanent magnet rotation motor is especially applicable to occasions of high-power permanent magnet motor engineering application.

Description

technical field [0001] The invention belongs to the field of motors and electrical appliances, in particular to a salient-pole halbach composite permanent magnet rotating motor. Background technique [0002] Permanent magnet motors have been widely used in various industries, and there are many types of permanent magnet motors. According to the arrangement of the rotor permanent magnets, it can be divided into surface type (also divided into surface protruding type, surface insertion type), built-in type (also divided into radial type, tangential type, hybrid type, etc.) and other rotor magnetic circuit structures. The former has a simple structure, but has a large equivalent electromagnetic air gap, low power density, and cannot be self-started. The latter has a high power density, but also has a large magnetic flux leakage. It is necessary to set up a special magnetic isolation bridge to limit the magnetic flux leakage. The structure is complex and both This leads to prob...

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Problems solved by technology

[0003] The technical problems to be solved by the present invention are engineering problems such as low output power, large volume and high cost of existing permanent magnet motors. In order to solve the above problems, a new structure of salient pole halbach composite permanent magnet rotating motor is adopted

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