I want to make brushless motor.

  • Thread starter Thread starter balraj
  • Start date Start date
  • Tags Tags
    Brushless Motor
Click For Summary
SUMMARY

The discussion centers on the design and power requirements for a brushless outrunner motor with a 25 cm outer diameter and a weight of 25 kg, intended to operate at 12,000 RPM. Key considerations include the torque output, material selection for the motor components, and the tensile strength necessary to withstand operational stresses. The power required is influenced by the load and efficiency, with no-load power losses stemming from winding resistance, eddy currents, and air drag being significant factors in performance calculations.

PREREQUISITES
  • Understanding of brushless motor design principles
  • Knowledge of material properties, specifically tensile strength
  • Familiarity with power and torque calculations for electric motors
  • Awareness of efficiency losses in electric motor systems
NEXT STEPS
  • Research brushless motor design specifications and calculations
  • Explore materials suitable for high-speed motor applications
  • Learn about torque and power requirements for electric motors
  • Investigate methods to minimize losses in electric motor efficiency
USEFUL FOR

Engineers, hobbyists, and students interested in electric motor design, specifically those focusing on brushless motors and their performance characteristics.

balraj
Messages
1
Reaction score
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.
 
Engineering news on Phys.org
How much torque would you like the motor to produce?
 
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 ?
 
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.
 

Similar threads

Need motor help with Electric Power Brush project for clearing snow
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad Motorized top with internal unbalanced flywheel
  • · Replies 3 ·
Replies
3
Views
483
How Do I Build a Controller for a Brushless HDD Motor for an RC Car Experiment?
  • · Replies 1 ·
Replies
1
Views
3K
Finding the Torque vs RPM curve for a 3-phase AC induction motor
  • · Replies 4 ·
Replies
4
Views
3K
Misc. DIY RC Boat with Parallel Impeller
  • · Replies 20 ·
Replies
20
Views
4K
E-bike Project: Finding Torque for 25 kmph Vehicle with 120 kg Gross Weight
  • · Replies 5 ·
Replies
5
Views
2K
How can I safely salvage and understand basic motors at home?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Increasing the output torque of a DC motor with gears
  • · Replies 16 ·
Replies
16
Views
4K
BLDC: Required voltage to get set rpm at given amps
  • · Replies 19 ·
Replies
19
Views
4K
What resources can help with designing a stator ring for an AC motor?
  • · Replies 1 ·
Replies
1
Views
4K