Brushless Motor

Course outline
Very simply, there are two kinds of DC motors: brushed, with mechanical contacts, and brushless, which do not have contacts. Both have their roles, but that of brushless motors is much bigger and they are much more versatile. In brushless motors, an electronic circuit switches current, and it can be precisely controlled with a semiconductor. This contributes to a high level of efficiency that reduces energy consumption, and makes the motors suitable for a wide range of applications. This course introduces the basic knowledge needed understand the control of brushless motors, and also covers comparison with brushed DC motors.

Target reader
People who are interested in brushless motors.

Learning time for this course
1 hour approx.

Chapter 1 What is a Brushless Motor

History of Brushless Motors
Brushed DC Motors and Brushless Motors
Classification of Brushless Motors
What is a Brushless Motor (1)
What is a Brushless Motor (2)
Application Examples of Brushless Motors

Chapter 2 Driving Principle of a Brushless Motor

Driving Principle of a Motor (1)
Driving Principle of a Motor (2)
Brushed DC Motors and Brushless Motors
Sequence of a Brushed DC Motor
Sequence of a Brushless Motor
Relation Between a Pole, a Phase, and a Slot

Chapter 3 Technical Explanation of a Brushless Motor

Technical Explanation of a Brushless Motor
What is PWM?
What is an Inverter?
What is a Driver?
Position Detection by a Hall Sensor
Position Detection by an Induced Voltage
What is a Square-Wave Drive?
What is a Sine-Wave Drive?

Chapter 4 Let's Try to Rotate a Motor

Configuration of Square-Wave Drive
To Start with Square-Wave Drive
To Rotate by Square-Wave Drive
Configuration of Sine-Wave Drive
To Start with Sine-Wave Drive
To Rotate by Sine-Wave Drive
To Change Speed
Speed ​​Sequence
開啟新視窗