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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 rotation, and also solve the problems of high loss density and high temperature rise of high-power high-speed motors

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
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Effect test

Embodiment 1

[0039] Such as Figure 1-5As shown, an electromagnetic structure of a high-speed motor for an air compressor, the electromagnetic structure includes a stator core 1, a stator winding 2 arranged on the stator core 1, a rotor core 3, and a permanent magnet embedded on the surface of the rotor core 3 The magnet 4, the stator core 1 is evenly arranged with multiple rows of stator slots along the circumference, the stator winding 2 is arranged in the stator slots in the connection mode of three layers of low harmonic concentric windings, and the surface of the rotor core 3 is evenly arranged with multiple rows along the circumference Two wedge-shaped grooves, wedge-shaped arms 5 are arranged between adjacent two wedge-shaped grooves, and air magnetic isolation holes 6 for increasing the amplitude of the air-gap flux density are arranged on the wedge-shaped arms 5, and the permanent magnet 4 is embedded in the wedge-shaped grooves to work When the rotor core 3 is running at a high s...

Embodiment 2

[0044] In this embodiment, there are 6 wedge-shaped grooves in total, which are arranged on the surface of the rotor core 3 in the axial direction, and the permanent magnet 4 is embedded in the wedge-shaped grooves in the axial direction, and the groove angle of the wedge-shaped grooves 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 arm. All the other are with embodiment 1.

Embodiment 3

[0046] In this embodiment, there are 8 wedge-shaped slots in total, which are arranged on the surface of the rotor core 3 in the axial direction, and the permanent magnet 4 is embedded in the wedge-shaped slots in the axial direction, and the slot angle of the wedge-shaped slots is 60°. The air magnetic isolation hole is a T-shaped air magnetic isolation hole, and the area of ​​the air magnetic isolation hole is 1 / 3 of the area of ​​the wedge arm. All the other are with embodiment 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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