- Артикул:00-01120518
- Автор: Christine Foyer
- Обложка: Мягкая обложка
- Страниц: 413
- Формат: А4 (210х297 мм)
- Год: 2024
- Вес: 1031 г
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Издание на английском языке
This book covers the fundamental aspects of electrical engineering and electromechanics, covering a wide range of topics, beginning with the fundamentals of magnetic circuits and magnetic materials. It covers in detail the operating principles of transformers, their design, types, testing methods, and parallel operation, which are essential for understanding the operation of such devices in power systems. Particular attention is paid to electromechanical energy conversion and the operating principles of rotating machines, including generators and AC and DC electric motors. The book also covers in detail the design, theory, and operating modes of synchronous generators and motors, as well as three-phase asynchronous motors, making it a valuable resource for students, engineers, and professionals in the electrical power industry. Sections include theory, practical examples, testing methods, and quizzes to reinforce knowledge.
Content
1. Magnetic Circuits and Magnetic
Materials
Introduction
1.1. Magnetic Circuits
1.1.1. Magnetic Circuit Analysis
1.1.2. Magnetic Material
1.1.3. Laws Governing Magnetic Circuits
1.2. Flux Linkage, Inductance and Energy
1.2.1. Inductance and Energy
1.2.2. Statically and Dynamically induced EMF
1.3. Torque
1.3.1. Properties of Magnetic Materials
1.3.2. Iron or Core Losses
1.3.3. A.C. Excitation
1.4. Permanent Magnets
1.4.1. Fundamentals
1.4.2. Experimental Techniques
1.4.3. Magnetic Materials for Permanent Magnets
Summary
Knowledge Check
Review Questions
References
2. Transformers
Introduction
2.1. Definition and Working Principle of Transformer
2.1.1. Transformer - Working Principle
2.1.2. Transformer Construction
2.1.3. Types of Transformers
2.1.4. E.M.F Equation of a Transformer
2.2. Equivalent Circuit of Transformer Referred to Primary and Secondary
2.2.1. Equivalent Circuit of Transformer
2.2.2. Losses in Transformer
2.2.3. Transformer ON Load Condition
2.3. Transformer Testing: Type Test and Routine Test of Transformer
2.3.1. Type of Transformer Testing
2.3.2. Dielectric Tests of Transformer
2.3.3. Voltage Regulation of Transformer
2.3.4. Sumpner's Test or Back-To-Back Test on Transformer
2.4. Three-Phase Transformers
2.4.1. Three Phase Transformer Connections
2.4.2. Parallel operation of Transformers
2.4.3. Magnetizing Inrush Current in Power Transformer
2.4.4. Auto Transformer
2.4.5. Tertiary Winding of Transformer
Summary
Knowledge Check
Review Questions
References
3. Electromechanical Energy Conversion and Rotating Machines
Introduction
3.1. Induced EMF in Electromechanical Systems
3.1.1. Force and Torque on a Current Carrying Conductor
3.1.2. Force and Torque Calculation from Energy and Coenergy
3.1.3. Model of Electromechanical Systems
3.2. First experience with electric (linear) motors
3.2.1. Force and torque in electric machines
3.3. Elementary Concepts
3.3.1. Introduction to Ac and Dc Machines
Summary
Knowledge Check
Review Questions
References
4. DC Generators
Introduction
4.1. Principle of DC Generator
4.1.1. Simple Loop Generator
4.1.2. Action of Commutator
4.2. Construction of D.C. Generator
4.2.1. Features of D.C. Armature Windings
4.2.2. Commutator Pitch (YC)
4.3. Types of D.C. Armature Windings
4.3.1. Characteristics of Series Wound DC Generator
4.3.2. Characteristic of Separately Excited DC Generator
4.4. Function of Commutator and Brushes
4.4.1. EMF Equation of DC Generator
4.4.2. Types of D.C. Generators
4.4.3. Constant and Variable Losses
4.5. Parallel Operation of DC Generators
4.5.1. Magnetization Curve of DC Generator
Summary
Knowledge Check
Review Questions
References
5. DC Motors
Introduction
5.1. Principle and Operations
5.1.1. Working Principle of A DC Motor
5.1.2. Detailed Description of a DC Motor
5.1.3. Types of DC Motors
5.2. Speed Regulation of DC Motor
5.3. Speed Control of DC Motor
5.3.1. Armature Control of DC Series Motor
5.3.2. Field Control of DC Series Motor
5.3.3. Speed Control of DC Shunt Motor
5.4. Torque Equation of DC Motor
5.5. Dynamic and Regenerative Braking
5.5.1. Types of Braking
5.6. Testing of DC Machine
5.6.1. Open Circuit Test
5.6.2. Retardation or Running down Test
5.6.3. Theory of retardation test
5.6.4. Moment of Inertia (I) of the Armature
5.6.5. Swinburne Test of DC Machine
5.6.6. Hopkinson's Test
5.7. Permanent Magnet DC Motor or PMDC Motor
5.7.1. Construction of Permanent Magnet DC Motor or PMDC Motor
5.7.2. Equivalent Circuit of Permanent Magnet DC Motor or PMDC Motor
5.8. Brushless DC Motors
5.8.1. Working Principle of Motor
5.8.2. Types of Brushless DC Motors
Summary
Knowledge Check
Review Questions
References
6. Synchronous Generator
Introduction
6.1. Synchronous Generator: Construction Details and Types
6.1.1. Synchronous Generator
6.1.2. Types of Synchronous Generator
6.1.3. Stator of Alternator or Synchronous Machine
6.1.4. Armature Winding: Pole Pitch, Coil Span, Commutator Pitch
6.1.5. Winding Factor: Pitch Factor and Distribution Factor
6.1.6. EMF Equation of a Synchronous Generator
6.2. Synchronous Reactance and Synchronous Impedance
6.2.1. Armature Reaction in a Synchronous Machine
6.2.2. Two Reaction Theory - Salient Pole Synchronous Machine
6.2.3. Synchronizing Of Alternators: Parallel Operation of Alternators
6.2.4. Infinite Bus
6.2.5. Synchronizing Power and Torque Coefficient
6.3. Voltage Regulation of a Synchronous Generator
6.3.1. Determination of Voltage Regulation
6.3.2. Zero Power Factor Characteristic (ZPFC)
6.3.3. Short Circuit Test on Three Phase Alternator
Summary
Knowledge Check
Review Questions
References
7. Synchronous Motor
Introduction
7.1. Synchronous Motor Working Principle
7.1.1. Synchronous Motor - Construction and Working
7.2. Methods of Starting Synchronous Motor
7.2.1. Behavior of a Synchronous Motor
7.2.2. Torque Motor
7.3. Synchronous Motor Excitation
7.3.1. Excitation Control of Synchronous Machine Using Chopper
7.3.2. Hunting in Synchronous Motor
7.3.3. AC Series Motor
7.3.4. Phasor Diagram for Synchronous Motor
7.3.5. Synchronization with Infinite Bus Bar
7.4. Synchronous Condenser and Controller
Summary
Knowledge Check
Review Questions
References
8. Three Phase Induction Motor
Introduction
8.1. Concept of Three-phase Induction Motor
8.1.1. Construction of Three Phase Induction Motor
8.1.2. Operation Principle of Three Phase Induction Motors
8.2. Three-Phase Rotating Fields
8.2.1. Generation of Rotating Magnetic Field (RMF)
8.2.2. Rotor Frequency at Operation Condition
8.2.3. Rotor Resistance
8.2.4. Rotor Reactance
8.2.5. Rotor Impedance
8.2.6. Rotor Current and Power Factor
8.2.7. Simplified Equivalent Circuit of Rotor
8.3. Stator Parameters
8.3.1. Induction Motor on No-load
8.3.2. Induction Motor on Load
8.3.3. Induction Motor vs Transformer
8.3.4. Reasons of Low Power Factor of Induction Motors
8.4. Main Tests Performed on an Induction Motor
Summary
Knowledge Check
Review Questions
References
Index