In-slot self-cooling high-speed permanent magnetic motor system for compressor

A permanent magnet motor and self-cooling technology, applied in the field of electric motors, can solve the problems of insufficient permanent magnet strength, easy damage, loss density of high-power and high-density motors, and difficulty in dissipating heat, and achieves effective and safer protection. The effect of the rotor generating heat, increasing efficiency

Inactive Publication Date: 2013-03-20
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

[0004] Purpose of the invention: The present invention provides a self-cooling high-speed permanent magnet motor system in a slot for a compressor, and its purpose is to solve the problem of insufficient permanent magnet strength and easy damage of the conventional motor rotor when the rotor rotates at a high speed, as well as the high-power and high-density motor system. The problem of high loss density of the motor, diffi

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  • In-slot self-cooling high-speed permanent magnetic motor system for compressor
  • In-slot self-cooling high-speed permanent magnetic motor system for compressor
  • In-slot self-cooling high-speed permanent magnetic motor system for compressor

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Embodiment Construction

[0028] The invention will be further described below in conjunction with the accompanying drawings.

[0029] The present invention provides a self-cooling high-speed permanent magnet motor system in a tank for a compressor, which includes a casing 1 and a stator and a rotor arranged in the casing 1, and the two ends of the casing 1 are respectively provided with a left end cover 20 and a right end cover 14 , a cooling water jacket is arranged outside the casing 1, and the inside of the cooling water jacket is a circumferential spiral water channel 9; the stator includes a stator core 7, a stator winding 6 and a winding pressure plate, and the stator winding is arranged on the stator core 7, and the stator A radial air duct 8 is arranged in the middle of the iron core 7, and the radial air duct 8 communicates with the axial inner air duct 5 arranged on the periphery of the rotor; The air outlet 15 that wind draws.

[0030] The rotor is composed of a rotor core 2, a per...

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Abstract

The invention relates to an in-slot self-cooling high-speed permanent magnetic motor system for a compressor and belongs to the technical field of motors. The megawatt high-speed variable-frequency motor comprises a cooling water jacket, a stator core, a stator winding, a stator radial air channel, an inner stator air channel, a permanent magnet rotor, two sliding bearings and two compressor impellers. The system has the advantages that the problems of severe heat and uneven temperatures of a high-speed motor rotor can be solved effectively; the problems of the over-temperature and overlarge axial temperature gradient of the stator core are solved; and not only the strength problem of a permanent magnet under a condition of high-speed rotation of the rotor can be solved mechanically, but also higher harmonics can be effectively prevented from entering the permanent magnet and generating added losses electromagnetically.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a self-cooling high-speed permanent magnet motor system in a tank for compressors. The motor has the characteristics of simple structure, high efficiency, reliability, good heat dissipation, and high rotor strength, and realizes the motor and compressor. Integrated, especially suitable for compressors transported by natural gas pipelines. Background technique [0002] Due to high speed, high power density, and small size, high-speed motors can effectively save materials; high-speed motors have small moment of inertia and fast dynamic response; high-speed motors can be directly connected to working machines or loads, eliminating the need for traditional mechanical transmission devices , thus reducing noise and improving the efficiency of the transmission system. The research and application of high-speed motors meet the needs of economic development for energy conservation and emi...

Claims

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Application Information

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IPC IPC(8): H02K9/19H02K5/20H02K1/27H02K1/16H02K1/20
Inventor 张凤阁王天煜王凤翔杜光辉黄娜
Owner SHENYANG POLYTECHNIC UNIV
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