Questions concerning about brushless dc motor

In summary, the conversation discussed various aspects of a brushless dc motor. The participants talked about the flow of power from a battery through the magnetic wire, the use of magnets to create repelling forces and spin the armature, and the components like the rotating rotor and cork with attached magnets. They also questioned why the magnets repel instead of attracting, the materials used in the rotor and how they function in the motor, and the effects of using stronger magnets. Overall, the discussion focused on understanding how a brushless dc motor works and the role of magnets in its functioning.
  • #1
deathslice246
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questions concerning about the brushless dc motor

in a brushless dc motor,does the power given by a battery move in and out throughout the electric current of the magnetic wire?

I have the magnetic wires both parallel to each other and placed at the negative and positive terminal of the battery. both magnetic wire are placed around an iron nail and it's situated on a beam so it's balance. in front of the iron nail is a cork with 2 magnets attached to it. i have also placed a needle through the cork so that the needle would fit in a little hole that can hold the cork and the 2 magnets attached to it. when i turn on the machine, the armature or cork starts spinning because the magnets are repelling. why do the magnets repel instead of attract in this particular situation?

What is a rotating rotor made out of and how does it push or pull when being used in a motor?

How does a cork with 2 magnets attach to it repel a magnetized iron nail magnetically in a brushless dc motor?

Do magnets in motor tend to repel or attract?
also how do magnets effect how the motor functions? and if stronger magnets would have a greater effect on the cork( we used a cork from a wine bottle and connected it with 1 magnets to the left and right side)
 
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  • #2
First, a wire is a wire. Magnetic wire is not a term.

Next, I think many of your questions are better answered with a video. Try this one.

 

FAQ: Questions concerning about brushless dc motor

What is a brushless DC motor and how does it work?

A brushless DC motor is a type of electric motor that uses electronic commutation instead of traditional brushes to switch the current direction in the motor. This results in a more efficient and reliable motor as there is less wear and tear on the components. The motor works by using a permanent magnet rotor and stator windings to create a rotating magnetic field that drives the motor shaft.

What are the advantages of using a brushless DC motor?

The main advantages of using a brushless DC motor include higher efficiency, longer lifespan, and greater control over motor speed and torque. These motors also have a lower risk of malfunction and require less maintenance compared to traditional brushed motors.

Are there any disadvantages to using a brushless DC motor?

One potential disadvantage of brushless DC motors is their initial cost, as they are typically more expensive than traditional brushed motors. They also require more complex electronic control systems, which may increase the overall system cost. Additionally, brushless DC motors may produce more electrical noise, which can interfere with other electronic devices.

How do you control the speed of a brushless DC motor?

The speed of a brushless DC motor can be controlled by adjusting the frequency and duration of the electric pulses sent to the motor. This is typically done through a motor controller, which uses feedback from sensors to adjust the speed and direction of the motor.

What are some common applications of brushless DC motors?

Brushless DC motors are commonly used in a variety of applications, including robotics, electric vehicles, industrial machinery, and consumer electronics. They are also often used in applications that require high precision and reliability, such as medical equipment and aerospace technology.

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