High-speed electric machine electromagnetism structure for air compressor

A technology of electromagnetic structure and high-speed motor, which is applied in the shape/pattern/structure of magnetic circuit, electromechanical device, shape/pattern/structure of winding conductor, etc. Achieve high speed, high power density and reduce harmonic loss

Active Publication Date: 2015-07-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mechanically solve the problem of permanent magnets being broken under high tensile stress under high-speed rota

Method used

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  • High-speed electric machine electromagnetism structure for air compressor
  • High-speed electric machine electromagnetism structure for air compressor
  • High-speed electric machine electromagnetism structure for air compressor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1:

[0039] Such as Figure 1-5 As shown, an electromagnetic structure of a high-speed motor for an air compressor includes a stator core 1, a stator winding set on the stator core 1, a rotor core 3, and a permanent clamp embedded on the surface of the rotor core 3. The magnet 4, the stator core 1 is evenly distributed with multiple rows of stator slots along the circumference, the stator winding 2 is arranged in the stator slots by the connection of three layers of low-harmonic concentric windings, and the surface of the rotor core 3 is evenly distributed along the circumference. A wedge-shaped slot, a wedge-shaped arm 5 is provided between two adjacent wedge-shaped slots. The wedge-shaped arm 5 is provided with an air magnetic isolation hole 6 for increasing the amplitude of the air gap magnetic density. The permanent magnet 4 is clamped in the wedge-shaped slot to work When the rotor core 3 is running at a high speed, the wedge arm 5 generates radial pressure o...

Example Embodiment

[0043] Example 2:

[0044] In this embodiment, there are a total of 6 wedge-shaped grooves, which are arranged on the surface of the rotor core 3 in the axial direction. The permanent magnet 4 is clamped in the wedge-shaped groove in the axial direction, and the groove angle of the wedge-shaped groove is 50°. The air magnetic isolation hole is a T-shaped air magnetic isolation hole, and the area of ​​the air magnetic isolation hole is 1 / 2 of the area of ​​the wedge-shaped arm. The rest is the same as in Example 1.

Example Embodiment

[0045] Example 3:

[0046] In this embodiment, there are a total of 8 wedge-shaped grooves, which are arranged on the surface of the rotor core 3 in the axial direction. The permanent magnet 4 is clamped in the wedge-shaped groove in the axial direction, and the groove angle of the wedge-shaped groove is 60°. The air isolation hole is a T-shaped air isolation hole, and the area of ​​the air isolation hole is 1 / 3 of the area of ​​the wedge-shaped arm. The rest is the same as in Example 1.

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Abstract

The invention relates to a high-speed electric machine electromagnetism structure for an air compressor. The high-speed electric machine electromagnetism structure for the air compressor comprises a stator core, a stator winding which is arranged on the stator core, a rotor core and a permanent magnet which is clamped on the surface of the rotor core; a plurality of stator grooves are uniformly formed in the circumference of the stator core; the stator winding is arranged inside the stator grooves in a connecting mode of three-layer low harmonic wave concentric winding; a plurality of wedge-shaped grooves are uniformly distributed along the circumference of the surface of the rotor core; a wedge-shaped arm is arranged between the adjacent two wedge-shaped grooves; air magnetic separation holes which are used for improving the gap flux density amplitude are formed in the wedge-shaped arm; permanent magnets are clamped in the wedge-shaped grooves. Compared with the prior art, the high-speed electric machine electromagnetism structure for the air compressor has the advantages of being compact in integral structure, high in rotation speed, high in mechanical intensity, small in harmonic loss and the like.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to an electromagnetic structure of a high-speed motor for an air compressor. Background technique [0002] As a basic product of industrial modernization, air compressors have been widely used in steel, electric power, shipbuilding, light industry, aerospace, automobiles and other fields. Therefore, the performance of the air compressor will directly affect the efficiency, compactness and air humidification of the fuel cell system. In the current technological development process, the air compressor in the fuel cell system must meet the requirements of no oil, small size, high pressure, low noise and low power consumption. As the core component of the air compressor, the design of the drive motor is the basic premise to realize the above requirements, and it is also a technical difficulty in the design of the air compressor. [0003] In order to provide high-pressure gas under the pr...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K1/27H02K3/12
CPCH02K1/165H02K1/2706H02K1/2733H02K3/12
Inventor 王心坚章桐朱珊张智明温立军许思传袁恒衣鹏黄佳倪春瑾
Owner TONGJI UNIV
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