High-speed amorphous alloy permanent magnet motor

Abstract

The invention provides a high-speed amorphous alloy permanent magnet motor. The high-speed amorphous alloy permanent magnet motor comprises a motor shell, a motor body and a position sensor, wherein the motor body and the position sensor are arranged in the motor shell. The motor body comprises a rotor and a stator. The rotor comprises a rotating shaft, a rotor iron core, a permanent magnet, a sheath and a bearing; the stator comprises a stator core and a stator winding. The stator core is made of an iron-based amorphous alloy material, so that the iron loss of the motor is reduced, and the efficiency and the power density of the motor are improved; the permanent magnets are made of neodymium iron boron materials, thereby reducing the weight of the motor, improving the performance of the motor, and being efficient and energy-saving. The stator slots of the stator core are flat-bottom slots with arc-shaped bottom ports, so that the sectional area of the stator slots is increased to a certain extent, the magnetic circuit area is reduced, the flux density of tooth parts is increased, and the copper loss of the stator is reduced under the condition that the sizes of the stator slots are not changed. The motor is reliable in overall mechanical strength, good in universality, excellent in performance, capable of adapting to high-speed working conditions and reliable in operation, and the rated rotating speed is not smaller than 59,000 rpm.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a high-speed permanent magnet motor. Background technique [0002] Electric motors are a vital part of critical manufacturing and everyday life, consuming more than 50% of the total energy generated worldwide. At present, high-speed motors are one of the research hotspots in the field of electrical engineering. High-speed motors are small in size, high in power density, small in moment of inertia, and fast in dynamic response. They can save traditional mechanical transmission devices and directly drive high-speed loads. They are widely used in Machining, aviation, navigation and oil field exploration and many other fields. Among the high-speed motors used in the high-speed transmission field, the permanent magnet synchronous motor has attracted more and more attention due to its advantages of high efficiency, reliable operation, high power factor, and good control characteristics, ...

AI Technical Summary

Problems solved by technology

However, the speed of high-speed permanent magnet motors reaches tens of thousands or even hundreds of thousands of revolutions per minute, and its loss distribution and temperature rise characteristics are quite different from traditional motors, and the high-speed operating conditions will also cause huge loads on the rotor The centrifugal force requires high mechanical strength of the rotor

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