Preview Fundamentals of DC Motor

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Introduction

Course Promo

1.1 Course Intro

Fundamental Concept of How DC Motor Works

2.1: Parameters of Electrical & Mechanical System

2.2: Representation of Electric Motor as Block Diagram

2.3: Force produced by Permanent Magnet

2.4: How electric current produces force?

2.5: Current Carrying Conductors Placed in Magnetic Field

2.6: Requirement of Arrangement to Produce Unidirectional Torque

2.7: How to Supply Electric Current to Rotating Coil

2.8: Maintaining Direction of Current with Commutator

2.9: Conclusion

Basic Parts of DC Motor

3.1: Basic Parts of DC Motor

Back emf & it’s importance

4.1: Role of Faraday’s law and Lenz’s law in DC Motor (Back emf)

Mathematical Representation

5.1: Speed Torque Equation

5.2: Graphical Representation

Speed Control Methods

6.1: Effect of Supply Voltage

6.2: Effect of Adding Resistance to Armature Winding

6.3: Effect of Adding Resistance to Field Winding

Summary

7.1: Summary

DC Series Motor

8.1: DC Series Motor

8.2: Speed Torque Characteristics of DC Series Motor

More about DC Motor

9.1: Introduction

9.2: Controversy Effect: “Effect of Field Flux on Motor Torque”

9.3: Equation of Force

9.4: Shape and Equation of Back Emf

9.5: Average Value of Back Emf

9.6: Power Transfer

9.7: Shaft Torque

9.8: Applications & Limitations

9.9: Maximum Power Transfer Point

Demonstrations & Practice

10.1 Permanent Magnet DC Motors