0(0)

# DC MOTORS

• Course level: Beginner

#### DC MOTORS (DC-Ms). Understand “How DC Motor works?” in the most simplified way. The course is designed to help students in understanding fundamental concepts and mathematical derivation. Content delivered here ensures learning new prospective for students of schools & colleges. “Easy to understand” and “Every bit to understand” are two basic blocks of this course.

Contents:

Section 1: Introduction

1 Course Introduction

Section 1: Fundamental Concept of How (DC-Ms) Works

2 Parameters of Electrical & Mechanical System

3 Representation of Electric Motor as Block Diagram

4 Force produced by Permanent Magnet

5 How electric current produces force?

6 Current-Carrying Conductors Placed in Magnetic Field

7 Requirement of Arrangement to Produce Unidirectional Torque

8 How to Supply Electric Current to Rotating Coil

9 How Commutator Maintains Direction of Current

10 Conclusion

Section 2: Basic Parts of (DC-M)

11 Basic Parts ofDC MOTORS

Section 3: Role of Faraday’s law and Lenz’s law in DC MOTORS (Back emf).

12 Role of Faraday’s law and Lenz’s law in DC MOTORS (Back emf).

Section 4: Mathematical Representation of DC Motor

13 Speed Torque Equation

14 Graphical Representation

Section 5: Speed Control Methods

15 Effect of Supply Voltage

16 Effect of Adding External Resistance to Armature Winding

17 Effect of Adding External Resistance to Field Winding

Section 6: Summary

18 Summary

19 Introduction

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

21 Equation of Force

22 Shape and Equation of Back Emf

23 Average Value of Back Emf

24 Power Transfer

25 DC Series Motor

26 Speed Torque Characteristic s of DC Series Motor

27 Shaft Torque

28 Applications & Limitations

Section 8: Demonstrations

29 Demonstration of PM DC Motor

More contents will be added in the future as per requirement and/or request. This course is to provide answers to all questions and queries related to (DC-Ms).

## Who this course is for:

1. Anyone curious to know “How Electric Motor Works?”.
2. Anyone wants to improve the fundamentals of (DC-Ms).
3. Students ages from School & College.
4. First-Year Engineering Students
5. Engineering Students of Electrical Engineering & Related Branch.

#### What Will I Learn?

• Will have the answer to “Why Motor Starts Rotating When Supply by Voltage Source?”.
• Will understand the Role of Back-emf in Energy Conversion Process.
• Will understand “How to derive equations of motor speed?”.
• Will understand Torque Speed Relation and its Graphical Representation
• Will understand Speed Control Methods of DC Motor
• Will understand DC series Motor and its applications

30 Lessons

#### DC MOTORS

##### #21 DC Generator – DC Machines – Conclusion and Summary of course00:00:00 Free