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induction motor braking circuit testing and video

by:Earlston     2020-01-20
Control the braking speed of the motor.
This is the most important thing related to any motor, because the induction motor braking is done by: 1)
Regenerative braking of induction motors. 2)
AC dynamic braking
DC dynamic braking
0 order Braking5)
Blocking brake of induction motor
Dynamic braking of induction motorSelf-
Exciting braking
DC jet brake: same as AC operation.
It is a method of induction motor deceleration.
A dc voltage is applied to the induction motor winding, generating a magnetic field and applying the torque to the rotor.
This will cause the rotor to completely slow down and stop.
The rotor is in its position when the DC voltage is applied to the winding.
The DC magnetic field in the stator is the same as the AC stator magnetic field, so the frequency is 0Hz, so the air gap will be static.
The higher the applied voltage, the stronger the braking force and the holding force.
It is the basis and wide application of induction motor.
The overall effect shows that the motor will stop quickly and smoothly.
The rotor remains in its position and resists any force for a period of time when the DC voltage is applied.
The strength of the braking force is controlled by the DC voltage applied on it.
The higher the voltage, the stronger the brake force.
If you need more information to design this brake system then you can talk to me on www. harvetech.
It can be said that the speed moment braking characteristic is the image of the speed moment curve of the car.
If DC voltage is maintained on the stator rotor, it will remain in its position.
If the DC injection lasts for a period of time, the motor may be damaged.
DC injection technology can be used at any torque level, and small load braking is the first choice.
DC injection is a feature of today\'s AC drives.
If the DC injection is not applied to the motor, then the motor slows down, but it takes a long time to stop when the feed is removed, which may not be acceptable in an emergency.
Maintenance does not increase when braking is provided without the need to touch the part.
The picture shows the simple circuit diagram I used, and in the timer circuit block I used the 555 mono stable injection DC voltage for a few seconds to stop.
Note: for different motors, how much current is required to stop motor movement is variable.
, You need to experiment to find the exact amps needed to stop the motor.
The heat consumed during frequent stop and start-up can cause the motor to overheat.
You can see my results in the video above.
These guys really helped me a lot when doing this hobby project. harvetech.
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