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Magnetic field analysis method for designing eccentric magnetic force gear and based on analytical method

A magnetic gear and analysis method technology, applied in the direction of electrical components, electromechanical devices, electromechanical transmission devices, etc., can solve the problems of magnetic field analysis methods and electromagnetic design without related patents

Inactive Publication Date: 2014-02-26
SHANGHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are related patents on the mechanical structure of eccentric magnetic gears, such as patent applications (201110355864.1, 201120444409.4, etc.), but there are no related patents on its magnetic field analysis method and electromagnetic design

Method used

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  • Magnetic field analysis method for designing eccentric magnetic force gear and based on analytical method
  • Magnetic field analysis method for designing eccentric magnetic force gear and based on analytical method
  • Magnetic field analysis method for designing eccentric magnetic force gear and based on analytical method

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Embodiment Construction

[0065] The specific implementation of the present invention will be described below by taking the eccentric magnetic gear with a maximum torque of 27.5 Nm as a preferred embodiment.

[0066] In this embodiment, the boundary perturbation method is used to establish the analytical model. Such as figure 1 As shown, the stator permanent magnet is not magnetized first, and the eccentric magnetic field under the action of the low-speed rotor permanent magnet is solved based on the analytical method, and then the low-speed rotor permanent magnet is not magnetized, and the eccentric magnetic field under the stator permanent magnet is solved alone, and The two are linearly superimposed to obtain the eccentric magnetic field under the simultaneous action of the low-speed rotor and the stator permanent magnet. According to the distribution of the air gap magnetic flux density, the electromagnetic torque of the eccentric magnetic gear is solved.

[0067] Such as figure 2 As shown, the...

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Abstract

The invention relates to a magnetic field analysis method for designing an eccentric magnetic force gear and based on an analytical method. The eccentric magnetic force gear is composed of a high speed rotor, a low speed rotor and a stator. Aiming at an electromagnetic design of the eccentric magnetic force gear, a boundary perturbation method is employed to establish an analytical model; firstly, a permanent magnet of the stator is not magnetized, and an eccentric magnetic field under the individual effect of a permanent magnet of the low speed rotor is solved based on the analytical method; then the permanent magnet of the low speed rotor is not magnetized, and an eccentric magnetic field under the individual effect of the permanent magnet of the stator is solved; the two eccentric magnetic fields are linearly superposed, and an eccentric magnetic field under the common effect of the permanent magnet of the low speed rotor and the permanent magnet of the stator is obtained; and an electromagnetic torque of the eccentric magnetic force gear is solved in dependence on the distribution of the air gap magnetic flux density. The magnetic field analysis method for the eccentric magnetic force gear can be applied to electromagnetic designs of a plurality of eccentric magnetic force transmission devices such as eccentric magnetic force harmonic wave meshing gears, eccentric cascade magnetic force gear gearboxes, eccentric magnetic force gear drive discs and the like.

Description

technical field [0001] The invention relates to an analytical method-based magnetic field analysis method for eccentric magnetic gear design. It can be applied to the electromagnetic design of many magnetic transmission devices such as eccentric magnetic harmonic meshing gears, eccentric cascade magnetic gear gearboxes, and eccentric magnetic gear transmission discs. Background technique [0002] The magnetic gear has the advantages of low noise, no contact, no friction, no maintenance, overload self-protection, large torque transmission capacity, etc. The concentric magnetic field modulation type magnetic gear uses the magnetic ring between the inner and outer rotors to change the air gap magnetic permeability , so that the inner and outer rotors are coupled in the magnetic field, thereby increasing the torque transmission efficiency, such as patent applications (CN200810036391.7, CN200810036391.7, CN200910196525.6, etc.). However, the magnetic modulation ring of this type...

Claims

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Application Information

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IPC IPC(8): H02K51/00
Inventor 章跃进李琛刘蓉晖井立兵周晓燕张杭彭澍周小筠
Owner SHANGHAI UNIV
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