I want to make brushless motor.

In summary, the conversation is about creating a brushless motor with specific dimensions and weight, and determining the required wattage and torque for it to rotate at 12000 rpms. The material and tensile strength of the motor are also discussed, as well as the power drawn and losses in the motor.
  • #1
balraj
1
0
Sir, I want to make a brushless motor out runner type. Body is 2.5 thick with 25 cm outer dia. It's weight is 25kg. Shaft of stator is 4cm in dia. How much watt is required for rotating this outer body at speed of 12000 rpms.
 
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  • #2
How much torque would you like the motor to produce?
 
  • #3
Of what material will that "out runner" be made? Have you checked it has tensile strength to stay together at 12,000 RPM and 25 cm OD ?
 
  • #4
The load will normally determine the power drawn. If it doesn't then the motor probably isn't very efficient.

The no load power will depend on losses in the motor and these are hard to calculate. They include losses due to winding resistance, eddy currents and air drag.
 

1. How does a brushless motor work?

A brushless motor uses a series of permanent magnets on the rotor and electromagnets on the stator to generate motion. Unlike traditional motors with brushes, brushless motors use electronic commutation to switch the electromagnets on and off, resulting in a more efficient and reliable design.

2. What are the advantages of a brushless motor?

Brushless motors have several advantages over traditional motors with brushes. They are more efficient, have a longer lifespan, and require less maintenance. They also have a higher power-to-weight ratio and can operate at higher speeds.

3. What materials are needed to make a brushless motor?

The materials needed to make a brushless motor include permanent magnets, electromagnets, a rotor, a stator, bearings, and a controller. The exact materials and specifications may vary depending on the specific design and application of the motor.

4. Can I make a brushless motor at home?

Yes, it is possible to make a basic brushless motor at home with the right materials and tools. However, it requires advanced knowledge and skills in electrical and mechanical engineering. It is recommended to consult professional resources and follow safety protocols when attempting to make a brushless motor at home.

5. What are the common uses of brushless motors?

Brushless motors are commonly used in a variety of applications, including electric vehicles, drones, power tools, household appliances, and industrial machinery. They are also becoming increasingly popular in robotics and automation due to their efficiency and precision.

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