Understanding Brushless Motors: A Comprehensive Guide

In summary, the conversation discusses the confusion surrounding brushless motors and the desire for a comprehensive book on the subject, specifically focusing on 3-phase motors. A powerpoint presentation is recommended and discussed, but there is hesitation due to the introduction of complex concepts. The conversation ends with a humorous acknowledgement of the potential challenges of dealing with computer-controlled multiphase motors.
  • #1
Bassalisk
947
2
So here is the thing.

I was searching the internet for information about brushless motors. Everywhere I went, they had mixed statements about it. Long threads about which is it, is it controlled by AC or DC or what have you.

I am interested in book, that is covering this subject in depth. I am focusing mainly on 3-phase brushless motors, like the ones found in old floppies. And if I'm confused if it is or isn't 3-phase, I want to learn what it actually is.

Please suggest me a book on this subject.

Thank you.
 
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  • #3
Thank you. I did like it. But it introduced a few concepts that scared me a bit. Reluctance torque etc. But, the operation of brushless motor is explained very well. I will try and build this electronic speed controller for 3 phase brushless motors.
 
  • #4
scared me too. I will no longer be able to fix wife's washing machine when it's built around computer controlled multiphase motors.

old jim
 
  • #5
hahaha yes, well it certainly won't make my life easier either :D
 

1. What is a brushless motor?

A brushless motor is an electric motor that uses a permanent magnet rotor and electronic commutation to power the motor. Unlike traditional motors, brushless motors do not have physical brushes that make contact with the commutator, resulting in improved efficiency and less wear and tear.

2. How does a brushless motor work?

Brushless motors use electronic commutation to switch the direction of the electric current flowing through the stator windings. This creates a rotating magnetic field that interacts with the permanent magnets on the rotor, causing it to spin. The speed and direction of the motor can be controlled by adjusting the timing of the commutation.

3. What are the advantages of using a brushless motor?

Brushless motors offer several advantages over traditional motors, including higher efficiency, longer lifespan, and less maintenance. They also have a higher power-to-weight ratio, making them ideal for applications where weight and size are a concern.

4. What are the common applications of brushless motors?

Brushless motors are commonly used in various industries, including robotics, automotive, aerospace, and consumer electronics. They are also widely used in electric vehicles, drones, and industrial machinery.

5. How do I choose the right brushless motor for my project?

When choosing a brushless motor, consider factors such as the required power and speed, the voltage and current requirements, and the physical size and weight limitations. It is also important to select a motor from a reputable manufacturer and to ensure that it is compatible with your motor controller.

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