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Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell

A technology of AC servo motors and permanent magnets, applied in circuits, fuel cells, electromechanical devices, etc., can solve the problems of uneven axial temperature distribution of motors, large volume of asynchronous motors, and unsuitable applications, so as to improve cooling effect and increase Production cost, simple effect

Inactive Publication Date: 2007-11-28
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it also has the following disadvantages: First, due to the characteristics of the spiral water channel, the water inlet and outlet are respectively arranged at both ends of the motor. In this way, the axial temperature distribution of the motor is very uneven, showing one end high, If the other end is low, the cooling effect will be reduced
However, on the other hand, the asynchronous motor has a large volume and low efficiency, and its low-speed operation performance is poor, which cannot meet its application in fuel cells

Method used

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  • Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell
  • Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell
  • Direct cooling permanent magneta A.C. servo electric machine and brushless D.C. electric machine and application in fuel cell

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Embodiment Construction

[0018] Figure 1 shows a permanent magnet AC servo motor, which is composed of a casing 3, a stator 7, a rotor 8, a left end cover 2, a right end cover 9 and an encoder 11. A coil is embedded in the stator 7, and the stator coil A thermally conductive insulating layer 5 is also provided between the end 4 of the outer casing 3 and the inner surface of the casing 3. The thermally conductive insulating layer 5 can be made of quartz powder material with good thermal conductivity and good insulating performance, so that the stator coil end 5 The heat generated can be quickly removed. A cooling channel 6 is provided on the shell 3 , a cooling channel 1 is provided on the left end cover 2 , and a cooling channel 10 is also provided on the right end cover 9 . The above-mentioned cooling passages can be arranged independently to form a self-contained system, or they can be connected to each other. For the latter structure, it can be operated in series or in parallel.

[0019] Referrin...

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Abstract

This invention relates to a direct cold permanent magnet AC server motor and brushless motor including a shell, stators and rotators characterizing in designing an axial labyrinth channel in the shell with inlet and an outlet at the end. Cold medium of water or air is plug into the channel to flow from one end to the other, so the axial temperature of the motor is very uniform, at the same time, structure of the labyrinth channel can increase paths for medium passing to further improve cold effect.

Description

technical field [0001] The invention relates to a water-cooled, air-cooled or similar medium-cooled motor and its application, in particular to a direct-cooled permanent magnet AC servo motor and a brushless DC motor and their application in fuel cells. Background technique [0002] The cooling effect of the motor directly affects the performance of the motor. A motor with a good cooling effect can reduce the external volume of the motor, improve work efficiency, prolong the service life of the motor, and make the motor run in the best working state. Generally, there are two cooling methods for motors: external cooling and direct cooling inside the machine. The so-called external cooling method uses fans to dissipate heat to achieve the purpose of cooling the motor. This cooling method is relatively simple, but it will affect the service life of the motor for a motor that has been in high temperature, high heat, high dust or similar relatively harsh environments for a long ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/04H02K9/00H02K9/12H02K9/08H02K9/19H02K9/22H02K1/27H01M8/00
CPCY02E60/50
Inventor 陈阳生陶志鹏
Owner ZHEJIANG UNIV
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