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Rewinding of industrial cooling fan motor after wire burning and wire breaking repair

from:International Sports Carnival published_at:2018-12-04 20:20:59 pv:658

Shenzhen Tengshi Youchuang Technology Co., Ltd. is a factory specializing in the production of industrial cooling fans. With the detailed explanation of Tengshi Youchuang Technology, we can repair the broken wires of industrial cooling fan motors and rewind the industrial cooling fan motors as soon as possible. Details are as follows.

1. Is the industrial cooling fan motor DC or AC?

Industrial cooling fan motor and brush DC motor work the same principle, the input is DC, the work is AC, the essence is DC motor.

2. Triangular connection and star (Y) connection

Triangular connection: three lines end to end

Star connection: three lines end to end

3. Line diameter, number of strands and turns

Wire Diameter: Enamelled Wire Diameter

Number of strands: The number of strands wound together when winding

Turns: Number of Circles Around Each Electrode

0.21 * 4 * 13T (diameter * stock * turns) T: turns

4. winding CIS and inverse

The stator is tail-down and top-up.

Clockwise: winding clockwise

Inverse: winding counterclockwise

5. On the premise of certain conditions, the factors affecting the rotational speed

Turn number is the most important factor affecting the speed of brushless motor when the magnet and stator remain unchanged. Overall, the more turns, the slower the speed; the less turns, the faster the speed.

6. Groove Full Rate

The ratio of the coil wound on the electrodes to the coil that can be wound into the maximum limit. The higher the cell full rate, the greater the power; the lower the cell full rate, the smaller the power.

7. winding diagram

Wire winding diagram of full series brushless motor

8. 2204-2826 Series Brushless Motor Winding Data Table (Unit Number, Turn Number)

2204-2826 series coil winding data. xls (12 KB, download times: 221)

Meaning of 9, 12N14P

A 12-pole (coil stator) 14-Piece magnet motor.

II. Preparations

Remove wire diameter, number of strands, number of turns, if only repair the motor can refer to the original data and methods.

Stator dismantling

Of course, many masters do not disassemble the stator, I did not disassemble the stator around a XXD2814, overall okay, but did not disassemble the winding around the stator coil beautiful. Method of Attaching Magic Friend to Stator Winding Coil without Disassembling

Method of winding stator without disassembly

Method One Screw Top Stator

3. Determining the number of shares and turns

In my last few days, a 2206 winding is 021*2*20, that is, a winding can be wound into 20*2=40 laps of 0.21MM wire diameter enameled wire. If I want to increase its KV, I can take three one-strand winding method to reduce the number of turns. Through calculation, it is clear that three one-strand winding can only be divided by three equal to about 13 turns, that is 0.21*3*13, KV is estimated to be more than 240.

How to reduce its KV value? Of course, by reducing the number of shares and increasing the number of turns, we can know by calculation that each share can circle 40 times, so that the KV is relatively low.

What should I do if I want it to go around 1000KV? From the appendix (see the appendix of this article), it can be found that the winding of 28 turns should reach 1000KV, of course, which requires a thinner diameter.

As you can see from the attached table, 2212 1000KV winding method is 0.21*4*13T. It is known that each winding can be wound into 4*13=52 laps of 0.21MM enameled wire. What should I do if I need to change it to 2200KV? Reducing turns to 6T, 52 divided by 6 equals about 8, that is, 0.21*8*6.

Through this calculation, we can clearly circumvent the KV we need.


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