Understanding Speed Control for DC Motors-1 — Lesson 3

This lesson covers the intriguing subject of DC motor speed control, with a particular focus on shunt and separately excited machines. The lesson delves into the mechanisms and principles behind the speed control of these types of motors. For instance, it explains how altering the voltage or current in a shunt or separately excited machine can influence the speed of the motor. This knowledge is crucial for anyone working with or studying electrical machines and their control systems.

Video Highlights

00:56 - Explanation of the torque versus slip characteristics of the machine speed
05:41 - Discussion on the range of the control of the voltage
16:33 - Explanation of the armature voltage control method with a variable DC supply voltage
28:52 - Explanation of the armature voltage control method when the load torque demand is increased

Key Takeaways

• The speed of a DC motor can be controlled by manipulating the voltage or current in the motor.
• Shunt and separately excited machines are two types of DC motors that can be controlled in this way.
• Understanding these principles is essential for effective control of electrical machines.