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A self-starting rare earth permanent magnet synchronous motor rotor

A rare earth permanent magnet, synchronous motor technology, applied in synchronous machine parts, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problems of material waste, poor motor mechanical strength, large leakage flux, etc. , to achieve the effect of suppressing harmonic torque, increasing power factor and reducing iron loss

Active Publication Date: 2016-04-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the key problems of material waste, poor motor mechanical strength and large leakage flux caused by the prior art, and the matching of starting torque and pull-in torque of rare earth permanent magnet synchronous motors, the present invention proposes a self-starting rare earth permanent magnet synchronous motor. Motor rotor

Method used

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  • A self-starting rare earth permanent magnet synchronous motor rotor
  • A self-starting rare earth permanent magnet synchronous motor rotor

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Embodiment Construction

[0023] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0024] The starting process of the rare earth permanent magnet synchronous motor is complicated. On the basis of analyzing the dynamic response of the rare earth permanent magnet synchronous motor with the state component method, the present invention uses the finite element magnetic field analysis technology to calculate the transient parameters, which improves the calculation accuracy of the dynamic process and solves the problem of rare earth permanent magnet synchronous motor The key problem of matching the starting torque and pull-in torque of magnetic synchronous motor.

[0025] A self-starting rare earth permanent magnet synchronous motor rotor structure such as figure 1 As shown, it includes large slot 1, small slot 2, permanent magnet magnetic steel 3, permanent magnet magnetic steel slot 4, magnetic isolation bridge 5, central shaft 6 and rotor core 7, ...

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Abstract

The invention relates to a self-starting rare-earth permanent magnet synchronous motor rotor. A novel rotor structure is designed by comprehensive analysis and calculation according to the structure characteristics of the rare-earth permanent magnet synchronous motor, so that not only is the pull-in torque of the motor improved, but also harmonic torque is effectively inhibited, and iron loss is reduced. Especially, a deep rotor-bar which is mainly used for starting is replaced with a matched design of large and small grooves, the cogging effect is reduced, and the effective utilization area of the rotor is increased, so that the efficiency of the motor is improved, the power factor is increased, the maximal torque is increased, a space is saved for teeth and yokes of the rotor, the design method capable of optimizing the overall size of the motor can be achieved, and the starting performance and the working characteristics of the motor are improved.

Description

technical field [0001] The invention relates to a rotor of a self-starting rare-earth permanent-magnet synchronous motor, in particular to a novel high-efficiency and energy-saving self-starting rare-earth permanent-magnet synchronous motor rotor structure, which belongs to the technical field of motors. Background technique [0002] As the country with the largest reserves of rare earth materials in the world, my country vigorously researches and promotes the application of new rare earth permanent magnet synchronous motors with the characteristics of high efficiency, high power density and low loss, which has important theoretical significance and application value. [0003] The self-starting rare earth permanent magnet synchronous motor is a high-efficiency energy-saving motor with asynchronous start and synchronous operation. The squirrel cage bars in the rotor structure are mainly used for starting, and the permanent magnet magnet steel is built in the rotor. For small ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/02H02K1/27
Inventor 贺梦颖窦满峰庞基包艳艳符荣汪远林
Owner NORTHWESTERN POLYTECHNICAL UNIV
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