EEEB344 Electromechanical Devices
Chapter 1
Complete Summary:
Electrical Machinery Fundamentals Stephen Chapman 4th Edtion
Electric Machinery Fundamentals4th Edition
By Stephen Chapman Latest Update
QUALITY WORK LATEST UPDATE 20025
1
, EEEB344 Electromechanical Devices
Chapter 1
Chapter 1 – Introduction To Machinery Principles
Summary:
1. Basic Concept Of Electrical Machines Fundamentals:
o Rotational Component Measurements
▪ Angular Velocity, Acceleration
▪ Torque, Work, Power
▪ Newton’s Law Of Rotation
o Magnetic Field Study
▪ Production Of A Magnetic Field
▪ Magnetic Circuits
2. Magnetic Behaviour Of Ferromagnetic Materials
3. How Magnetic Field Can Affect Its Surroundings:
• Faraday’s Law – Induced Voltage From A Time-Changing Magnetic
Field.
• Production Of Induced Force On A Wire.
• Induced Voltage On A Conductor Moving In A Magnetic Field
4. Linear Dc Machines
2
, EEEB344 Electromechanical Devices
Chapter 1
Introduction
1. Electric Machines → Mechanical Energy To Electric Energy Or Vice Versa
Mechanical Energy → Electric Energy : Generator
Electric Energy → Mechanical Energy : Motor
2. Almost All Practical Motors And Generators Convert Energy From One Form To Another
Through The Action Of A Magnetic Field.
3. Only Machines Using Magnetic Fields To Perform Such Conversions Will Be Considered In This Course.
4. When We Talk About Machines, Another Related Device Is The Transformer. A Transformer Is
A Device That Converts Ac Electric Energy At One Voltage Level To Ac Electric Energy At
Another Voltage Level.
5. Transformers Are Usually Studied Together With Generators And Motors Because They Operate
On The Same Principle, The Difference Is Just In The Action Of A Magnetic Field To
Accomplish The Change In Voltage Level.
6. Why Are Electric Motors And Generators So Common?
- Electric Power Is A Clean And Efficient Energy Source That Is Very Easy To
Transmit Over Long Distances And Easy To Control.
- Does Not Require Constant Ventilation And Fuel (Compare To Internal-Combustion
Engine), Free From Pollutant Associated With Combustion
1. Basic Concept Of Electrical Machines Fundamentals
1.1 Rotational Motion, Newton’s Law And Power Relationship
Almost All Electric Machines Rotate About An Axis, Called The Shaft Of The Machines. It Is
Important To Have A Basic Understanding Of Rotational Motion.
Angular Position, - Is The Angle At Which It Is Oriented, Measured From Some Arbitrary Reference
Point. Its Measurement Units Are In Radians (Rad) Or In Degrees. It Is Similar To The Linear Concept
Of Distance Along A Line.
Conventional Notation: +Ve Value For Anticlockwise Rotation
-Ve Value For Clockwise Rotation
Angular Velocity, - Defined As The Velocity At Which The Measured Point Is Moving. Similar To
The Concept Of Standard Velocity Where:
Dr
V=
Dt
Where
: R – Distance Traverse By The Body
T – Time Taken To Travel The
Distance R
For A Rotating Body, Angular Velocity Is Formulated
As:
D (Rad/S)
=
Dt
3
, EEEB344 Electromechanical Devices
Chapter 1
Where
: - Angular Position/ Angular Distance Traversed By The Rotating Body
T – Time Taken For The Rotating Body To Traverse The Specified Distance, .
4
Chapter 1
Complete Summary:
Electrical Machinery Fundamentals Stephen Chapman 4th Edtion
Electric Machinery Fundamentals4th Edition
By Stephen Chapman Latest Update
QUALITY WORK LATEST UPDATE 20025
1
, EEEB344 Electromechanical Devices
Chapter 1
Chapter 1 – Introduction To Machinery Principles
Summary:
1. Basic Concept Of Electrical Machines Fundamentals:
o Rotational Component Measurements
▪ Angular Velocity, Acceleration
▪ Torque, Work, Power
▪ Newton’s Law Of Rotation
o Magnetic Field Study
▪ Production Of A Magnetic Field
▪ Magnetic Circuits
2. Magnetic Behaviour Of Ferromagnetic Materials
3. How Magnetic Field Can Affect Its Surroundings:
• Faraday’s Law – Induced Voltage From A Time-Changing Magnetic
Field.
• Production Of Induced Force On A Wire.
• Induced Voltage On A Conductor Moving In A Magnetic Field
4. Linear Dc Machines
2
, EEEB344 Electromechanical Devices
Chapter 1
Introduction
1. Electric Machines → Mechanical Energy To Electric Energy Or Vice Versa
Mechanical Energy → Electric Energy : Generator
Electric Energy → Mechanical Energy : Motor
2. Almost All Practical Motors And Generators Convert Energy From One Form To Another
Through The Action Of A Magnetic Field.
3. Only Machines Using Magnetic Fields To Perform Such Conversions Will Be Considered In This Course.
4. When We Talk About Machines, Another Related Device Is The Transformer. A Transformer Is
A Device That Converts Ac Electric Energy At One Voltage Level To Ac Electric Energy At
Another Voltage Level.
5. Transformers Are Usually Studied Together With Generators And Motors Because They Operate
On The Same Principle, The Difference Is Just In The Action Of A Magnetic Field To
Accomplish The Change In Voltage Level.
6. Why Are Electric Motors And Generators So Common?
- Electric Power Is A Clean And Efficient Energy Source That Is Very Easy To
Transmit Over Long Distances And Easy To Control.
- Does Not Require Constant Ventilation And Fuel (Compare To Internal-Combustion
Engine), Free From Pollutant Associated With Combustion
1. Basic Concept Of Electrical Machines Fundamentals
1.1 Rotational Motion, Newton’s Law And Power Relationship
Almost All Electric Machines Rotate About An Axis, Called The Shaft Of The Machines. It Is
Important To Have A Basic Understanding Of Rotational Motion.
Angular Position, - Is The Angle At Which It Is Oriented, Measured From Some Arbitrary Reference
Point. Its Measurement Units Are In Radians (Rad) Or In Degrees. It Is Similar To The Linear Concept
Of Distance Along A Line.
Conventional Notation: +Ve Value For Anticlockwise Rotation
-Ve Value For Clockwise Rotation
Angular Velocity, - Defined As The Velocity At Which The Measured Point Is Moving. Similar To
The Concept Of Standard Velocity Where:
Dr
V=
Dt
Where
: R – Distance Traverse By The Body
T – Time Taken To Travel The
Distance R
For A Rotating Body, Angular Velocity Is Formulated
As:
D (Rad/S)
=
Dt
3
, EEEB344 Electromechanical Devices
Chapter 1
Where
: - Angular Position/ Angular Distance Traversed By The Rotating Body
T – Time Taken For The Rotating Body To Traverse The Specified Distance, .
4
