Halbach double-salient pole electrical motor

A double salient pole motor and salient pole technology, applied to the static parts of the magnetic circuit, the shape/style/structure of the magnetic circuit, etc., can solve the problems of low power and weight, and large magnetic flux leakage from permanent magnets with tangential structures, and achieve High power-to-weight ratio, large air-gap magnetic density, and strong overload capacity

Inactive Publication Date: 2005-07-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] At present, the stator permanent magnet type doubly salient permanent magnet motor is widely used. Compared with the internal magnetic field Halbach motor, it has two obvious structural defects: (1) The tangential structure permanent magnet has a large outward magnetic flux leakage; (2) The radial structure must have a stator magnetic shell
Limits the air gap magnetic density of the motor to increase, and the power-to-weight ratio is low

Method used

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  • Halbach double-salient pole electrical motor
  • Halbach double-salient pole electrical motor
  • Halbach double-salient pole electrical motor

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Embodiment Construction

[0016] Since the structure of the Halbach doubly salient motors with different numbers of phases is similar, the motor structure of the present invention will be described below by taking the three-phase 6 / 4 structure Halbach doubly salient motor shown in FIG. 3 as an example.

[0017] The stator core assemblies 1 and 2 and the rotor 3 of the Halbach doubly salient pole motor of the present invention are all made of laminated silicon steel sheets. The three-phase motor has a 6K / 4K structure, that is, the number of stator teeth is 6K, the number of rotor teeth is 4K, and K=1, 2, 3...20. The stator core is composed of 2K identical core components, each component has three teeth, a total of 6K teeth are evenly distributed along the circumference, and the width of the tooth tip is π / 6K radian. The rotor has 4K teeth, and the addendum width is also π / 6K radian, which can also be slightly larger than π / 6K radian; the rotor can be straight teeth or helical teeth. For example, the th...

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Abstract

The iron core of stator and rotator is made of pressed stack silicon steel sheet. The three-phase machine has the structure of 6K/4K, namely the teeth numbers of stator is 6K, and the teeth numbers of rotator is 4K. K=1, 2, 3..... The iron core of stator is composed of 2K same iron core components, each component has three teeth, there are total amount of 6K teeth distributing evenly along the circle. The width at tooth tip is n/6K radian. The rotator has 4K teeth and the width at tooth tip is also 4/6K radian or a little bit more than n/6K. The tooth of rotate can be straight tooth or skewed tooth.

Description

technical field [0001] The Halbach doubly salient pole motor of the present invention belongs to the AC / DC motor of motor class. Background technique [0002] In 1979, Klaus Halbach, a famous American scholar, proposed a novel design for the structure of permanent magnets - the Halbach column, as shown in Figure 1. Subsequently, scholars from various countries conducted a lot of research on the Halbach series and its applications: Z.Q.Zhu, a Chinese scholar at the University of Sheffield in the United Kingdom, systematically sorted out various theories of Halbach motors, and established a complete set of Halbach motor design methods; Ohio State University in the United States used The Halbach motor was optimized by the finite element; Massachusetts Cambridge Institute of Technology analyzed the similarities and differences between the Halbach column and the ordinary permanent magnet structure, pointed out the superiority of the Halbach column in the surface mount permanent m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14
Inventor 严仰光朱德明孟小利赵朝会
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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