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Stator permanent magnet type cursor motor structure for reducing positioning force

A vernier motor, permanent magnet technology, applied in the magnetic circuit shape/style/structure, magnetic circuit static parts and other directions, can solve the problems of reduced positioning force, large positioning force, etc., to achieve high power density and increase manufacturing costs , the effect of improving power density

Active Publication Date: 2014-01-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of large positioning force in the existing magnetism-concentrating stator permanent magnet vernier motor, and propose a stator permanent magnet vernier motor structure that can reduce the positioning force to ensure that the positioning force is effectively reduced At the same time, the no-load back electromotive force and thrust output of the motor remain unchanged

Method used

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  • Stator permanent magnet type cursor motor structure for reducing positioning force
  • Stator permanent magnet type cursor motor structure for reducing positioning force
  • Stator permanent magnet type cursor motor structure for reducing positioning force

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Embodiment Construction

[0019] see figure 1 The structure of the stator permanent magnet vernier motor with reduced positioning force in the present invention includes two parts, the primary 1 and the secondary 2. There is an air gap between the primary 1 and the secondary 2, and the thickness of the air gap is selected according to the size and requirements of the motor. . The secondary 2 is formed by slotting the iron core to form a trapezoidal slot, the slotting on the primary 1 forms a slotted structure, and there is a slot 14 between two adjacent teeth on the primary 1, and the slot 14 is used to place the winding, and the winding is centralized or distributed Winding, groove 14 can adopt various groove types, select according to specific needs.

[0020] see figure 1 and figure 2 , a tooth of the secondary 1 includes a tooth 21 and a yoke 22, and the tooth 21 is trapezoidal in shape on the side opposite to the air gap. Width of tooth 21 near the air gap side S 1 and pitch T p Ratio K ...

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Abstract

The invention discloses a stator permanent magnet type cursor motor structure for reducing positioning force. The structure comprises a primary portion and a secondary portion, wherein an air gap is formed between the primary portion and the secondary portion, a plurality of virtual slots and a plurality of virtual teeth are arranged at the tooth end of each tooth of the primary portion in the moving direction of a motor, the number of the virtual teeth is N1, the number of the virtual slots is N2, the relation of N1 and N2 is N1=N2+1, and the N2 is an odd number larger than 1; a fourth permanent magnet is embedded in the virtual slot right in the middle, and magnetism gathering modules are embedded in the other virtual slots; the magnetizing direction of the fourth permanent magnet is perpendicular to the moving direction of the motor and is towards the air gap; each magnetism gathering module is formed by sequentially and tightly attaching three permanent magnets, wherein the magnetizing direction of the middle permanent magnet is perpendicular to the moving direction of the motor and is towards the air gap, the two permanent magnets on the two sides are relatively magnetized, and the magnetizing direction is the same as the moving direction of the motor; due to the matching of the permanent magnets and the magnetism gathering modules, the positioning force can be reduced, and meanwhile performance indexes such as no-load counter electromotive force, thrust output and the dosage of the permanent magnets are not affected.

Description

technical field [0001] The invention relates to a motor manufacturing technology and a primary permanent magnet motor positioning force technology, in particular to a stator permanent magnet vernier motor structure. Background technique [0002] The vernier motor has the characteristics of low speed and high torque, so it has good application scenarios in many occasions such as rail transit, ship propulsion, food processing and electric vehicles. At present, the permanent magnet vernier motor is mostly researched on the rotor permanent magnet motor, and the permanent magnet is placed on the rotor. During the operation of the motor, it will cause heat dissipation difficulties, and excessive temperature rise will cause permanent magnet loss. magnetism, causing the motor to malfunction. Stator permanent magnet motors place both permanent magnets and armature windings on the stator, and the rotor has no windings or permanent magnets. The structure is simple. The temperature ris...

Claims

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Application Information

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IPC IPC(8): H02K1/17H02K1/16H02K1/14
Inventor 吉敬华赵建兴赵文祥康梅
Owner JIANGSU UNIV
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