Electrical machine fundamentals with numerical simulation usingMATLAB/SIMULINK / / Atif Iqbal, Shaikh Moinoddin, Bhimireddy Prathap Reddy

• Autore: Iqbal Atif
• Pubblicazione: Hoboken, New Jersey : , : Wiley, , [2021]; ©2021
• Descrizione fisica: 1 online resource (835 pages)
• Disciplina: 621.31042
• Soggetto topico: Electric machinery
• Soggetto genere / forma: Electronic books.
• Persona (resp. second.): MoinoddinShaikh <1954->; ReddyBhimireddy Prathap <1993->
• Nota di contenuto: Cover -- Title Page -- Copyright -- Contents -- Preface -- Acknowledgements -- Chapter 1 Fundamentals of Electrical Machines -- 1.1 Preliminary Remarks -- 1.2 Basic Laws of Electrical Engineering -- 1.2.1 Ohm's Law -- 1.2.2 Generalization of Ohm's Law -- 1.2.2.1 Derivation of Eq. (1.6) -- 1.2.3 Ohm's Law for Magnetic Circuits -- 1.2.4 Kirchhoff's Laws for Magnetic Circuits -- 1.2.5 Lorentz Force Law -- 1.2.6 Biot‐Savart Law -- 1.2.7 Ampere Circuital Law -- 1.2.8 Faraday's Law -- 1.2.8.1 Motional emf -- 1.2.9 Flux Linkages and Induced Voltages -- 1.2.10 Induced Voltages -- 1.2.11 Induced Electric Fields -- 1.2.12 Reformulation of Faraday's Law -- 1.3 Inductance -- 1.3.1 Application of Ampere's Law to Find B in a Solenoid -- 1.3.2 Magnetic Field of a Toroid -- 1.3.3 The Inductance of Circular Air‐Cored Toroid -- 1.3.4 Mutual Inductance -- 1.4 Energy -- 1.5 Overview of Electric Machines -- 1.6 Summary -- Problems -- References -- Chapter 2 Magnetic Circuits -- 2.1 Preliminary Remarks -- 2.2 Permeability -- 2.3 Classification of Magnetic Materials -- 2.3.1 Uniform Magnetic Field -- 2.3.2 Magnetic‐Field Intensity -- 2.4 Hysteresis Loop -- 2.4.1 Hysteresis Loop for Soft Iron and Steel -- 2.5 Eddy‐Current and Core Losses -- 2.6 Magnetic Circuits -- 2.6.1 The Magnetic Circuit Concept -- 2.6.2 Magnetic Circuits Terminology -- 2.6.2.1 Limitations of the Analogy Between Electric and Magnetic Circuits -- 2.6.3 Effect of Air Gaps -- 2.6.3.1 Magnetic Circuit with an Air Gap -- 2.6.3.2 Magnetic Forces Exerted by Electromagnets -- 2.7 Field Energy -- 2.7.1 Energy Stored in a Magnetic Field -- 2.7.1.1 The Magnetic Energy in Terms of the Magnetic Induction B -- 2.7.1.2 The Magnetic Energy in Terms of the Current Density J and the Vector Potential A -- 2.7.1.3 The Magnetic Energy in Terms of the Current I and of the Flux Ψm. ; 2.7.1.4 The Magnetic Energy in Terms of the Currents and Inductances -- 2.8 The Magnetic Energy for a Solenoid Carrying a Current I -- 2.9 Energy Flow Diagram -- 2.9.1 Power Flow Diagram of DC Generator and DC Motor -- 2.9.1.1 Power Flow Diagram and Losses of Induction Motor -- 2.9.1.2 Rotational Losses -- 2.10 Multiple Excited Systems -- 2.11 Doubly Excited Systems -- 2.11.1 Torque Developed -- 2.11.1.1 Excitation Torque -- 2.11.1.2 Reluctance Torque -- 2.12 Concept of Rotating Magnetic Field -- 2.12.1 Rotating Magnetic Field due to Three‐Phase Currents -- 2.12.1.1 Speed of Rotating Magnetic Field -- 2.12.1.2 Direction of Rotating Magnetic Field -- 2.12.2 Alternate Mathematical Analysis for Rotating Magnetic Field -- 2.13 Summary -- Problems -- References -- Chapter 3 Single‐Phase and Three‐Phase Transformers -- 3.1 Preliminary Remarks -- 3.2 Classification of Transformers -- 3.2.1 Classification Based on Number of Phases -- 3.2.1.1 Single‐Phase Transformers -- 3.2.1.2 Three‐Phase Transformers -- 3.2.1.3 Multi‐Phase Transformers -- 3.2.2 Classification Based on Operation -- 3.2.2.1 Step‐Up Transformers -- 3.2.2.2 Step‐Down Transformers -- 3.2.3 Classification Based on Construction -- 3.2.3.1 Core‐Type Transformers -- 3.2.3.2 Shell‐Type Transformers -- 3.2.4 Classification Based on Number of Windings -- 3.2.4.1 Single‐Winding Transformer -- 3.2.4.2 Two‐Winding Transformer -- 3.2.4.3 Three‐Winding Transformer -- 3.2.5 Classification Based on Use -- 3.2.5.1 Power Transformer -- 3.2.5.2 Distribution Transformer -- 3.3 Principle of Operation of the Transformer -- 3.3.1 Ideal Transformer -- 3.4 Impedance Transformation -- 3.5 DOT Convention -- 3.6 Real/Practical Transformer -- 3.7 Equivalent Circuit of a Single‐Phase Transformer -- 3.8 Phasor Diagrams Under Load Condition -- 3.9 Testing of Transformer -- 3.9.1 Open‐Circuit Test -- 3.9.2 Short‐Circuit Test. ; 3.10 Performance Measures of a Transformer -- 3.10.1 Voltage Regulation -- 3.10.1.1 Condition for Maximum Voltage Regulation -- 3.10.1.2 Condition for Zero Voltage Regulation -- 3.10.2 Efficiency of Transformer -- 3.10.3 Maximum Efficiency Condition -- 3.11 All‐Day Efficiency or Energy Efficiency -- 3.12 Autotransformer -- 3.13 Three‐Phase Transformer -- 3.13.1 Input (Y), Output (Δ) -- 3.13.2 Input Delta (Δ), Output Star (Y) -- 3.13.3 Input Delta (Δ), Output Delta (Δ) -- 3.13.4 Input Star (Y), Output Star (Y) -- 3.14 Single‐Phase Equivalent Circuit of Three‐Phase Transformer -- 3.15 Open‐Delta Connection or V Connection -- 3.16 Harmonics in a Single‐Phase Transformer -- 3.16.1 Excitation Phenomena in a Single‐Phase Transformer -- 3.16.2 Harmonics in a Three‐Phase Transformer -- 3.16.2.1 Star‐Delta Connection with Grounded Neutral -- 3.16.2.2 Star‐Delta Connection without Grounded Neutral -- 3.16.3 Summary -- 3.16.4 Star‐Star with Isolated Neutral -- 3.17 Disadvantages of Harmonics in Transformer -- 3.17.1 Effect of Harmonic Currents -- 3.17.2 Electromagnetic Interference -- 3.17.3 Effect of Harmonic Voltages -- 3.17.4 Summary -- 3.17.5 Oscillating Neutral Phenomena -- 3.18 Open Circuit and Short‐Circuit Conditions in a Three‐Phase Transformer -- 3.19 Matlab/Simulink Model of a Single‐Phase Transformer -- 3.20 Matlab/Simulink Model of Testing of Transformer -- 3.21 Matlab/Simulink Model of Autotransformer -- 3.22 Matlab/Simulink Model of Three‐Phase Transformer -- 3.23 Supplementary Solved Problems -- 3.24 Summary -- 3.25 Problems -- References -- Chapter 4 Fundamentals of Rotating Electrical Machines and Machine Windings -- 4.1 Preliminary Remarks -- 4.2 Generator Principle -- 4.2.1 Simple Loop Generator -- 4.2.2 Action of Commutator -- 4.2.3 Force on a Conductor -- 4.2.3.1 DC Motor Principle -- 4.2.3.2 Motor Action -- 4.3 Machine Windings. ; 4.3.1 Coil Construction -- 4.3.1.1 Coil Construction: Distributed Winding -- 4.3.1.2 Coil Construction: Concentrated Winding -- 4.3.1.3 Coil Construction: Conductor Bar -- 4.3.2 Revolving (Rotor) Winding -- 4.3.3 Stationary (Stator) Winding -- 4.3.4 DC Armature Windings -- 4.3.4.1 Pole Pitch (Yp) -- 4.3.4.2 Coil Pitch or Coil Span (Ycs) -- 4.3.4.3 Back Pitch (Yb) -- 4.3.4.4 Front Pitch (Yf) -- 4.3.4.5 Resultant Pitch (Y) -- 4.3.4.6 Commutator Pitch (a) -- 4.3.5 Lap Winding -- 4.3.5.1 Lap Multiple or Parallel Windings -- 4.3.5.2 Formulas for Lap Winding -- 4.3.5.3 Multiplex, Single, Double, and Triple Windings -- 4.3.5.4 Meaning of the Term Re‐entrant -- 4.3.5.5 Multiplex Lap Windings -- 4.3.6 Wave Winding -- 4.3.6.1 Formulas for Wave Winding -- 4.3.6.2 Multiplex Wave or Series‐Parallel Winding -- 4.3.6.3 Formulas for Series‐Parallel Winding -- 4.3.7 Symmetrical Windings -- 4.3.7.1 Possible Symmetrical Windings for DC Machines of a Different Number of Poles -- 4.3.8 Equipotential Connectors (Equalizing Rings) -- 4.3.9 Applications of Lap and Wave Windings -- 4.3.10 Dummy or Idle Coils -- 4.3.10.1 Dummy Coils -- 4.3.11 Whole‐Coil Winding and Half‐Coil Winding -- 4.3.12 Concentrated Winding -- 4.3.13 Distributed Winding -- 4.4 Electromotive Force (emf) Equation -- 4.4.1 emf Equation of an Alternator -- 4.4.1.1 Winding Factor (Coil Pitch and Distributed Windings) -- 4.4.2 Winding Factors -- 4.4.2.1 Pitch Factor or Coil Pitch (Pitch Factor (Kp) or Coil Span Factor [Kc]) -- 4.4.3 Distribution Factor (Breadth Factor (Kb) or Distribution Factor (Kd)) -- 4.4.3.1 Distribution Factor (Kd) -- 4.5 Magnetomotive Force (mmf) of AC Windings -- 4.5.1 mmf and Flux in Rotating Machine -- 4.5.2 Main Air‐Gap Flux (Field Flux) -- 4.5.3 mmf of a Coil -- 4.5.3.1 mmf -- 4.5.3.2 mmf of Distributed Windings -- 4.5.3.3 mmf Space Wave of a Single Coil. ; 4.5.3.4 mmf Space Wave of One Phase of a Distributed Winding -- 4.6 Harmonic Effect -- 4.6.1 The Form Factor and the emf per Conductor -- 4.6.2 The Wave Form -- 4.6.3 Problem Due to Harmonics -- 4.6.4 Elimination or Suppression of Harmonics -- 4.6.4.1 Shape of Pole Face -- 4.6.4.2 Use of Several Slots per Phase per Pole -- 4.6.4.3 Use of Short‐Pitch Windings -- 4.6.4.4 Effect of the Y‐ and Δ ‐Connection on Harmonics -- 4.6.4.5 Harmonics Produced by Armature Slots -- 4.7 Basic Principles of Electric Machines -- 4.7.1 AC Rotating Machines -- 4.7.1.1 The Rotating Magnetic Field -- 4.7.1.2 The Relationship between Electrical Frequency and the Speed of Magnetic Field Rotation -- 4.7.1.3 Reversing the Direction of the Magnetic Field Rotation -- 4.7.1.4 The Induced Voltage in AC Machines -- 4.7.1.5 The Induced Voltage in a Coil on a Two‐Pole Stator -- 4.7.1.6 The Induced Voltage in a Three‐Phase Set of Coils -- 4.7.1.7 The rms Voltage in a Three‐Phase Stator -- 4.7.2 The Induced Torque in an AC Machine -- 4.8 Summary -- Problems -- References -- Chapter 5 DC Machines -- 5.1 Preliminary Remarks -- 5.2 Construction and Types of DC Generator -- 5.2.1 Construction of DC Machine -- 5.2.2 Types of DC Generator -- 5.3 Principle of Operation of DC Generator -- 5.3.1 Voltage Build‐Up in a DC Generator -- 5.3.2 Function of Commutator -- 5.4 Commutation Problem and Solution -- 5.4.1 Brush Shifting -- 5.4.2 Commutating Poles -- 5.4.3 Compensating Windings -- 5.5 Types of Windings -- 5.6 emf Equations in a DC Generator -- 5.7 Brush Placement in a DC Machine -- 5.8 Equivalent Circuit of DC Generator -- 5.9 Losses of DC Generator -- 5.10 Armature Reaction -- 5.10.1 No‐Load Operation -- 5.10.2 Loaded Operation -- 5.11 Principle of Operation of a DC Motor -- 5.11.1 Equivalent Circuit of a DC Motor -- 5.12 emf and Torque Equations of DC Motor -- 5.13 Types of DC Motor. ; 5.13.1 Separately Excited DC Motor.
• Titolo autorizzato: Electrical machine fundamentals with numerical simulation usingMATLAB
• ISBN: 1-119-68266-5; 1-119-68265-7
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910555001703321
• Lo trovi qui: Univ. Federico II