High-speed permanent magnet motor with novel rotor structure

Abstract

The invention provides a high-speed permanent magnet motor structure with a novel rotor structure, belongs to the technical field of motor structures, and provides a novel structure to improve the working efficiency of a motor and optimize the performance of the motor. According to the technical scheme, the built-in V-shaped motor design is adopted, H-shaped reinforcing ribs are embedded into magnetic ribs on the side of a main magnetic isolation bridge and an auxiliary magnetic isolation bridge respectively, magnetic leakage is reduced, meanwhile, the positions of the main magnetic isolation bridge and the auxiliary magnetic isolation bridge can meet the mechanical strength and the electromagnetic performance, and the magnetic isolation bridge is thinned to the maximum extent; the surface of the rotor is sleeved with the sheath made of the carbon fiber material, the inner surface of the sheath is polished, so that the sheath is better attached to the rotor, meanwhile, the sheath is coated with a spraying layer, aging loss of the sheath is prevented, and the service life of the sheath is prolonged; according to the novel rotor structure provided by the invention, the stability of motor operation is ensured, the operation performance of the motor is improved, the rotor is protected, and the purpose of optimizing a high-speed permanent magnet motor by the novel structure is achieved.

Description

technical field [0001] The invention belongs to the technical field of electric motors, and in particular relates to a high-speed permanent magnet motor with a novel rotor structure. Background technique [0002] Due to the advantages of high efficiency, high power, high power factor, high reliability and easy maintenance, high-speed permanent magnet motors have gradually become the first choice for motor types in the industrial manufacturing industry. Considering the built-in rotor structure in high-speed permanent magnet motors, the application of its current There is a technology to make the size of the main magnetic isolation bridge as thin as possible to improve the performance of the motor, but the huge centrifugal force generated during high-speed rotation, if there is no protective measures, the rotor will be cracked due to the thinning of the main magnetic isolation bridge. Occurs, in order to avoid such a situation, the rotor needs to be protected with a sheath in ...

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Problems solved by technology

[0003] In addition, for the rotor of the built-in high-speed permanent magnet motor, the part of the rotor with the greatest stress is the main and auxiliary magnetic isolation bridges. For large motors, in order to meet the stress, it is inevitable to increase the width of the auxiliary magnetic isolation bridge in the design. However, This method can improve the mechanical strength but will increase the magnetic flux leakage. The shape of the traditional reinforcing rib is not enough to meet the weakening of the strength of the auxiliary magnetic isolation bridge when it is wider. At the same time, the magnetic flux leakage has not been significantly reduced.

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