Baffled air-cooled generator stator and generator with high torque density

A technology for generator stators and generator rotors, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve problems such as leakage, restrictions on application promotion, difficult maintainability, etc., and achieve simple and convenient processing and manufacturing, and low manufacturing costs , better heat transfer effect

Active Publication Date: 2022-03-25
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the more commonly used methods are liquid cooling and air cooling. The cooling effect of liquid cooling is good. The typical heat transfer coefficient of liquid cooling is 1-2 orders of magnitude higher than that of air cooling. However, liquid cooling has problems related to leakage, insulation, and water quality. A series of reliability and maintainability problems such as processing, restricting its application and promotion

Method used

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  • Baffled air-cooled generator stator and generator with high torque density
  • Baffled air-cooled generator stator and generator with high torque density
  • Baffled air-cooled generator stator and generator with high torque density

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Embodiment Construction

[0076] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application.

[0077] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. Unless otherwise defined, the technical terms or scientific terms used in the application shall have the ordinary meanings understood by those skilled in the art to which the application belongs. "First", "second" and similar words used in this application do not ind...

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Abstract

The present application provides a baffle air-cooled generator stator and a generator with high torque density. The generator stator includes a stator core and a plurality of stator windings. The stator core includes a plurality of lamination groups, which are arranged in a hollow columnar structure, and a plurality of stator teeth are formed on the side close to the generator rotor. The stator core includes a cavity and a cooling air duct located in the hollow, At least one lamination group includes a plurality of identical laminations stacked along the thickness direction, and is provided with a cooling air channel. A plurality of stator windings are assembled in each stator slot, the stator winding and at least one stator tooth adjacent to the stator winding form a ventilation gap in the tooth width direction, the ventilation gap extends along the stator teeth, and the cooling air duct communicates with the ventilation gap and the stator core A cavity in a hollow. This solution realizes the comprehensive optimization of the electromagnetic performance and cooling effect of the generator, and effectively improves the upper limit of the torque density of the generator. Moreover, the stator cores are stacked with the same laminations, which is not easy to cause material confusion.

Description

technical field [0001] The present application relates to the technical field of generators, in particular, to a generator stator and a generator. Background technique [0002] The copper loss, iron loss, permanent magnet eddy current loss, and mechanical loss generated during the operation of the motor make the temperature of the various components of the motor rise. High temperature will not only cause the performance of the motor to decline, but also cause reliability problems. For example, the increase of wire resistance and the reduction of permanent magnet remanence caused by high temperature will significantly reduce the power and efficiency of permanent magnet motors. High temperature will also cause a significant decrease in insulation life and irreversible demagnetization of permanent magnets. Cooling means to achieve the purpose of effectively controlling the temperature rise of the motor. [0003] At present, the more commonly used methods are liquid cooling and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/20H02K1/18H02K9/00H02K9/02
CPCH02K1/20H02K1/187H02K9/02
Inventor 吴立建闻汇施杨李华阳许移庆
Owner ZHEJIANG UNIV
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