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High efficieng electric machine

A high-efficiency, motor stator technology, applied in the shape/style/structure of the winding conductor, can solve the problems of weakening the ability of magnetic potential harmonics, excessively long stator winding materials, etc. The effect of saving magnet wire

Inactive Publication Date: 2005-05-25
TELLHOW SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of short-pitch double-layer winding has less ability to weaken the harmonics of the magnetic potential, but the end of the stator winding is still too long and uses more materials.

Method used

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  • High efficieng electric machine

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Embodiment Construction

[0007] like figure 1 As shown, the number of stator slots of the motor is 36, and the number of poles is a modified three-phase concentric double-layer winding of a 2-pole, 3-phase motor. The turns ratio from the large circle to the small circle is distributed according to 1:2:3:2. The fundamental winding coefficient Kapl=0.8665, the total harmonic content is 0.89%, and the fundamental winding coefficient Kapl=0.9095 of the conventional winding, the harmonic content is 0.64%. The content is greatly reduced, which can save a lot of electromagnetic wires and electromagnetic materials, and the economic efficiency is very obvious.

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Abstract

A high efficient motor contains three-phase concentric double layer winding with natural number rule turn ratio which greatly reduces magnetic potential harmonic content, reduces end length of stator winding and improves electromagnetic noise, temperature rising, vibration and efficiency.

Description

technical field [0001] The invention relates to a motor, especially a high-speed and high-efficiency three-phase asynchronous motor. Background technique [0002] As we all know, in high-efficiency motors, one of the key technologies is the sinusoidal winding of the stator winding △-Y connection. The stator winding △-Y sinusoidal winding can weaken the harmonics of the magnetic potential to a greater extent in theory. But on the other hand, due to the different wire gauges of the △ and Y parts of this winding, the number of turns is different. In order to have an angle difference of 30°, the number of grooves and the degree of freedom of selection of various parameters are limited. As a result, there are many specifications of electromagnetic wires, and the difficulty of management and processing technology increases. It even increases the hidden danger of quality, so many factories are not welcome to △-Y sinusoidal winding. The effect is not obvi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28
Inventor 林政安
Owner TELLHOW SCI TECH CO LTD
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