Pyrhonen , Juha.
Design of Rotating Electrical Machines. - 2nd ed. - 1 online resource (615 pages)
Intro -- DESIGN OF ROTATING ELECTRICAL MACHINES -- Contents -- Preface -- About the Authors -- Abbreviations and Symbols -- 1 Principal Laws and Methods in Electrical Machine Design -- 1.1 Electromagnetic Principles -- 1.2 Numerical Solution -- 1.3 The Most Common Principles Applied to Analytic Calculation -- 1.3.1 Flux Line Diagrams -- 1.3.2 Flux Diagrams for Current-Carrying Areas -- 1.4 Application of the Principle of Virtual Work in the Determination of Force and Torque -- 1.5 Maxwell's Stress Tensor -- Radial and Tangential Stress -- 1.6 Self-Inductance and Mutual Inductance -- 1.7 Per Unit Values -- 1.8 Phasor Diagrams -- Bibliography -- 2 Windings of Electrical Machines -- 2.1 Basic Principles -- 2.1.1 Salient-Pole Windings -- 2.1.2 Slot Windings -- 2.1.3 End Windings -- 2.2 Phase Windings -- 2.3 Three-Phase Integral Slot Stator Winding -- 2.4 Voltage Phasor Diagram and Winding Factor -- 2.5 Winding Analysis -- 2.6 Short Pitching -- 2.7 Current Linkage of a Slot Winding -- 2.8 Poly-Phase Fractional Slot Windings -- 2.9 Phase Systems and Zones of Windings -- 2.9.1 Phase Systems -- 2.9.2 Zones of Windings -- 2.10 Symmetry Conditions -- 2.10.1 Symmetrical Fractional Slot Windings -- 2.11 Base Windings -- 2.11.1 First-Grade Fractional Slot Base Windings -- 2.11.2 Second-Grade Fractional Slot Base Windings -- 2.11.3 Integral Slot Base Windings -- 2.12 Fractional Slot Windings -- 2.12.1 Single-Layer Fractional Slot Windings -- 2.12.2 Double-Layer Fractional Slot Windings -- 2.13 Single- and Double-Phase Windings -- 2.14 Windings Permitting a Varying Number of Poles -- 2.15 Commutator Windings -- 2.15.1 Lap Winding Principles -- 2.15.2 Wave Winding Principles -- 2.15.3 Commutator Winding Examples, Balancing Connectors -- 2.15.4 AC Commutator Windings -- 2.15.5 Current Linkage of the Commutator Winding and Armature Reaction. 2.16 Compensating Windings and Commutating Poles -- 2.17 Rotor Windings of Asynchronous Machines -- 2.18 Damper Windings -- Bibliography -- 3 Design of Magnetic Circuits -- 3.1 Air Gap and its Magnetic Voltage -- 3.1.1 Air Gap and Carter Factor -- 3.1.2 Air Gaps of a Salient-Pole Machine -- 3.1.3 Air Gap of Nonsalient-Pole Machine -- 3.2 Equivalent Core Length -- 3.3 Magnetic Voltage of a Tooth and a Salient Pole -- 3.3.1 Magnetic Voltage of a Tooth -- 3.3.2 Magnetic Voltage of a Salient Pole -- 3.4 Magnetic Voltage of Stator and Rotor Yokes -- 3.5 No-Load Curve, Equivalent Air Gap and Magnetizing Current of the Machine -- 3.6 Magnetic Materials of a Rotating Machine -- 3.6.1 Characteristics of Ferromagnetic Materials -- 3.6.2 Losses in Iron Circuits -- 3.7 Permanent Magnets in Rotating Machines -- 3.7.1 History and Development of Permanent Magnets -- 3.7.2 Characteristics of Permanent Magnet Materials -- 3.7.3 Operating Point of a Permanent Magnet Circuit -- 3.7.4 Demagnetization of Permanent Magnets -- 3.7.5 Application of Permanent Magnets in Electrical Machines -- 3.8 Assembly of Iron Stacks -- Bibliography -- 4 Inductances -- 4.1 Magnetizing Inductance -- 4.2 Leakage Inductances -- 4.2.1 Division of Leakage Flux Components -- 4.3 Calculation of Flux Leakage -- 4.3.1 Skewing Factor and Skew Leakage Inductance -- 4.3.2 Air-Gap Leakage Inductance -- 4.3.3 Slot Leakage Inductance -- 4.3.4 Tooth Tip Leakage Inductance -- 4.3.5 End Winding Leakage Inductance -- Bibliography -- 5 Resistances -- 5.1 DC Resistance -- 5.2 Influence of Skin Effect on Resistance -- 5.2.1 Analytical Calculation of Resistance Factor -- 5.2.2 Critical Conductor Height in Slot -- 5.2.3 Methods to Limit the Skin Effect -- 5.2.4 Inductance Factor -- 5.2.5 Calculation of Skin Effect in Slots Using Circuit Analysis -- 5.2.6 Double-Sided Skin Effect -- Bibliography. 6 Design Process of Rotating Electrical Machines -- 6.1 Eco-Design Principles of Rotating Electrical Machines -- 6.2 Design Process of a Rotating Electrical Machine -- 6.2.1 Starting Values -- 6.2.2 Main Dimensions -- 6.2.3 Air Gap -- 6.2.4 Winding Selection -- 6.2.5 Air-Gap Flux Density -- 6.2.6 The No-Load Flux of an Electrical Machine and the Number of Winding Turns -- 6.2.7 New Air-Gap Flux Density -- 6.2.8 Determination of Tooth Width -- 6.2.9 Determination of Slot Dimensions -- 6.2.10 Determination of the Magnetic Voltages of the Air Gap, and the Stator and Rotor Teeth -- 6.2.11 Determination of New Saturation Factor -- 6.2.12 Determination of Stator and Rotor Yoke Heights and Magnetic Voltages -- 6.2.13 Magnetizing Winding -- 6.2.14 Determination of Stator Outer and Rotor Inner Diameter -- 6.2.15 Calculation of Machine Characteristics -- Bibliography -- 7 Properties of Rotating Electrical Machines -- 7.1 Machine Size, Speed, Different Loadings and Efficiency -- 7.1.1 Machine Size and Speed -- 7.1.2 Mechanical Loadability -- 7.1.3 Electrical Loadability -- 7.1.4 Magnetic Loadability -- 7.1.5 Efficiency -- 7.2 Asynchronous Motor -- 7.2.1 Current Linkage and Torque Production of an Asynchronous Machine -- 7.2.2 Impedance and Current Linkage of a Cage Winding -- 7.2.3 Characteristics of an Induction Machine -- 7.2.4 Equivalent Circuit Taking Asynchronous Torques and Harmonics into Account -- 7.2.5 Synchronous Torques -- 7.2.6 Selection of the Slot Number of a Cage Winding -- 7.2.7 Construction of an Induction Motor -- 7.2.8 Cooling and Duty Types -- 7.2.9 Examples of the Parameters of Three-Phase Industrial Induction Motors -- 7.2.10 Asynchronous Generator -- 7.2.11 Wound Rotor Induction Machine -- 7.2.12 Asynchronous Motor Supplied with Single-Phase Current -- 7.3 Synchronous Machines. 7.3.1 Inductances of a Synchronous Machine in Synchronous Operation and in Transients -- 7.3.2 Loaded Synchronous Machine and Load Angle Equation -- 7.3.3 RMS Value Phasor Diagrams of a Synchronous Machine -- 7.3.4 No-Load Curve and Short-Circuit Test -- 7.3.5 Asynchronous Drive -- 7.3.6 Asymmetric-Load-Caused Damper Currents -- 7.3.7 Shift of Damper Bar Slotting from the Symmetry Axis of the Pole -- 7.3.8 V Curve of a Synchronous Machine -- 7.3.9 Excitation Methods of a Synchronous Machine -- 7.3.10 Permanent Magnet Synchronous Machines -- 7.3.11 Synchronous Reluctance Machines -- 7.4 DC Machines -- 7.4.1 Configuration of DC Machines -- 7.4.2 Operation and Voltage of a DC Machine -- 7.4.3 Armature Reaction of a DC machine and Machine Design -- 7.4.4 Commutation -- 7.5 Doubly Salient Reluctance Machine -- 7.5.1 Operating Principle of a Doubly Salient Reluctance Machine -- 7.5.2 Torque of an SR Machine -- 7.5.3 Operation of an SR Machine -- 7.5.4 Basic Terminology, Phase Number and Dimensioning of an SR Machine -- 7.5.5 Control Systems of an SR Motor -- 7.5.6 Future Scenarios for SR Machines -- Bibliography -- 8 Insulation of Electrical Machines -- 8.1 Insulation of Rotating Electrical Machines -- 8.2 Impregnation Varnishes and Resins -- 8.3 Dimensioning of an Insulation -- 8.4 Electrical Reactions Ageing Insulation -- 8.5 Practical Insulation Constructions -- 8.5.1 Slot Insulations of Low-Voltage Machines -- 8.5.2 Coil End Insulations of Low-Voltage Machines -- 8.5.3 Pole Winding Insulations -- 8.5.4 Low-Voltage Machine Impregnation -- 8.5.5 Insulation of High-Voltage Machines -- 8.6 Condition Monitoring of Insulation -- 8.7 Insulation in Frequency Converter Drives -- Bibliography -- 9 Losses and Heat Transfer -- 9.1 Losses -- 9.1.1 Resistive Losses -- 9.1.2 Iron Losses -- 9.1.3 Additional Losses -- 9.1.4 Mechanical Losses -- 9.1.5 Decreasing Losses. 9.1.6 Economics of Energy Savings -- 9.2 Heat Removal -- 9.2.1 Conduction -- 9.2.2 Radiation -- 9.2.3 Convection -- 9.3 Thermal Equivalent Circuit -- 9.3.1 Analogy between Electrical and Thermal Quantities -- 9.3.2 Average Thermal Conductivity of a Winding -- 9.3.3 Thermal Equivalent Circuit of an Electrical Machine -- 9.3.4 Modeling of Coolant Flow -- 9.3.5 Solution of Equivalent Circuit -- 9.3.6 Cooling Flow Rate -- Bibliography -- Appendix A -- Appendix B -- Index -- EULA.
In one complete volume, this essential reference presents an in-depth overview of the theoretical principles and techniques of electrical machine design. This timely new edition offers up-to-date theory and guidelines for the design of electrical machines, taking into account recent advances in permanent magnet machines as well as synchronous reluctance machines. New coverage includes: Brand new material on the ecological impact of the motors, covering the eco-design principles of rotating electrical machines An expanded section on the design of permanent magnet synchronous machines, now reporting on the design of tooth-coil, high-torque permanent magnet machines and their properties Large updates and new material on synchronous reluctance machines, air-gap inductance, losses in and resistivity of permanent magnets (PM), operating point of loaded PM circuit, PM machine design, and minimizing the losses in electrical machines> End-of-chapter exercises and new direct design examples with methods and solutions to real design problems> A supplementary website hosts two machine design examples created with MATHCAD: rotor surface magnet permanent magnet machine and squirrel cage induction machine calculations. Also a MATLAB code for optimizing the design of an induction motor is provided Outlining a step-by-step sequence of machine design, this book enables electrical machine designers to design rotating electrical machines. With a thorough treatment of all existing and emerging technologies in the field, it is a useful manual for professionals working in the diagnosis of electrical machines and drives. A rigorous introduction to the theoretical principles and techniques makes the book invaluable to senior electrical engineering students, postgraduates, researchers and university lecturers involved in electrical drives technology and electromechanical energy conversion.
9781118701621
Electric generators -- Design and construction.
Electric machinery -- Design and construction.
Electric motors -- Design and construction.
Rotational motion.
Electronic books.
TK2331 -- .P97 2014eb
621.31/042
Design of Rotating Electrical Machines. - 2nd ed. - 1 online resource (615 pages)
Intro -- DESIGN OF ROTATING ELECTRICAL MACHINES -- Contents -- Preface -- About the Authors -- Abbreviations and Symbols -- 1 Principal Laws and Methods in Electrical Machine Design -- 1.1 Electromagnetic Principles -- 1.2 Numerical Solution -- 1.3 The Most Common Principles Applied to Analytic Calculation -- 1.3.1 Flux Line Diagrams -- 1.3.2 Flux Diagrams for Current-Carrying Areas -- 1.4 Application of the Principle of Virtual Work in the Determination of Force and Torque -- 1.5 Maxwell's Stress Tensor -- Radial and Tangential Stress -- 1.6 Self-Inductance and Mutual Inductance -- 1.7 Per Unit Values -- 1.8 Phasor Diagrams -- Bibliography -- 2 Windings of Electrical Machines -- 2.1 Basic Principles -- 2.1.1 Salient-Pole Windings -- 2.1.2 Slot Windings -- 2.1.3 End Windings -- 2.2 Phase Windings -- 2.3 Three-Phase Integral Slot Stator Winding -- 2.4 Voltage Phasor Diagram and Winding Factor -- 2.5 Winding Analysis -- 2.6 Short Pitching -- 2.7 Current Linkage of a Slot Winding -- 2.8 Poly-Phase Fractional Slot Windings -- 2.9 Phase Systems and Zones of Windings -- 2.9.1 Phase Systems -- 2.9.2 Zones of Windings -- 2.10 Symmetry Conditions -- 2.10.1 Symmetrical Fractional Slot Windings -- 2.11 Base Windings -- 2.11.1 First-Grade Fractional Slot Base Windings -- 2.11.2 Second-Grade Fractional Slot Base Windings -- 2.11.3 Integral Slot Base Windings -- 2.12 Fractional Slot Windings -- 2.12.1 Single-Layer Fractional Slot Windings -- 2.12.2 Double-Layer Fractional Slot Windings -- 2.13 Single- and Double-Phase Windings -- 2.14 Windings Permitting a Varying Number of Poles -- 2.15 Commutator Windings -- 2.15.1 Lap Winding Principles -- 2.15.2 Wave Winding Principles -- 2.15.3 Commutator Winding Examples, Balancing Connectors -- 2.15.4 AC Commutator Windings -- 2.15.5 Current Linkage of the Commutator Winding and Armature Reaction. 2.16 Compensating Windings and Commutating Poles -- 2.17 Rotor Windings of Asynchronous Machines -- 2.18 Damper Windings -- Bibliography -- 3 Design of Magnetic Circuits -- 3.1 Air Gap and its Magnetic Voltage -- 3.1.1 Air Gap and Carter Factor -- 3.1.2 Air Gaps of a Salient-Pole Machine -- 3.1.3 Air Gap of Nonsalient-Pole Machine -- 3.2 Equivalent Core Length -- 3.3 Magnetic Voltage of a Tooth and a Salient Pole -- 3.3.1 Magnetic Voltage of a Tooth -- 3.3.2 Magnetic Voltage of a Salient Pole -- 3.4 Magnetic Voltage of Stator and Rotor Yokes -- 3.5 No-Load Curve, Equivalent Air Gap and Magnetizing Current of the Machine -- 3.6 Magnetic Materials of a Rotating Machine -- 3.6.1 Characteristics of Ferromagnetic Materials -- 3.6.2 Losses in Iron Circuits -- 3.7 Permanent Magnets in Rotating Machines -- 3.7.1 History and Development of Permanent Magnets -- 3.7.2 Characteristics of Permanent Magnet Materials -- 3.7.3 Operating Point of a Permanent Magnet Circuit -- 3.7.4 Demagnetization of Permanent Magnets -- 3.7.5 Application of Permanent Magnets in Electrical Machines -- 3.8 Assembly of Iron Stacks -- Bibliography -- 4 Inductances -- 4.1 Magnetizing Inductance -- 4.2 Leakage Inductances -- 4.2.1 Division of Leakage Flux Components -- 4.3 Calculation of Flux Leakage -- 4.3.1 Skewing Factor and Skew Leakage Inductance -- 4.3.2 Air-Gap Leakage Inductance -- 4.3.3 Slot Leakage Inductance -- 4.3.4 Tooth Tip Leakage Inductance -- 4.3.5 End Winding Leakage Inductance -- Bibliography -- 5 Resistances -- 5.1 DC Resistance -- 5.2 Influence of Skin Effect on Resistance -- 5.2.1 Analytical Calculation of Resistance Factor -- 5.2.2 Critical Conductor Height in Slot -- 5.2.3 Methods to Limit the Skin Effect -- 5.2.4 Inductance Factor -- 5.2.5 Calculation of Skin Effect in Slots Using Circuit Analysis -- 5.2.6 Double-Sided Skin Effect -- Bibliography. 6 Design Process of Rotating Electrical Machines -- 6.1 Eco-Design Principles of Rotating Electrical Machines -- 6.2 Design Process of a Rotating Electrical Machine -- 6.2.1 Starting Values -- 6.2.2 Main Dimensions -- 6.2.3 Air Gap -- 6.2.4 Winding Selection -- 6.2.5 Air-Gap Flux Density -- 6.2.6 The No-Load Flux of an Electrical Machine and the Number of Winding Turns -- 6.2.7 New Air-Gap Flux Density -- 6.2.8 Determination of Tooth Width -- 6.2.9 Determination of Slot Dimensions -- 6.2.10 Determination of the Magnetic Voltages of the Air Gap, and the Stator and Rotor Teeth -- 6.2.11 Determination of New Saturation Factor -- 6.2.12 Determination of Stator and Rotor Yoke Heights and Magnetic Voltages -- 6.2.13 Magnetizing Winding -- 6.2.14 Determination of Stator Outer and Rotor Inner Diameter -- 6.2.15 Calculation of Machine Characteristics -- Bibliography -- 7 Properties of Rotating Electrical Machines -- 7.1 Machine Size, Speed, Different Loadings and Efficiency -- 7.1.1 Machine Size and Speed -- 7.1.2 Mechanical Loadability -- 7.1.3 Electrical Loadability -- 7.1.4 Magnetic Loadability -- 7.1.5 Efficiency -- 7.2 Asynchronous Motor -- 7.2.1 Current Linkage and Torque Production of an Asynchronous Machine -- 7.2.2 Impedance and Current Linkage of a Cage Winding -- 7.2.3 Characteristics of an Induction Machine -- 7.2.4 Equivalent Circuit Taking Asynchronous Torques and Harmonics into Account -- 7.2.5 Synchronous Torques -- 7.2.6 Selection of the Slot Number of a Cage Winding -- 7.2.7 Construction of an Induction Motor -- 7.2.8 Cooling and Duty Types -- 7.2.9 Examples of the Parameters of Three-Phase Industrial Induction Motors -- 7.2.10 Asynchronous Generator -- 7.2.11 Wound Rotor Induction Machine -- 7.2.12 Asynchronous Motor Supplied with Single-Phase Current -- 7.3 Synchronous Machines. 7.3.1 Inductances of a Synchronous Machine in Synchronous Operation and in Transients -- 7.3.2 Loaded Synchronous Machine and Load Angle Equation -- 7.3.3 RMS Value Phasor Diagrams of a Synchronous Machine -- 7.3.4 No-Load Curve and Short-Circuit Test -- 7.3.5 Asynchronous Drive -- 7.3.6 Asymmetric-Load-Caused Damper Currents -- 7.3.7 Shift of Damper Bar Slotting from the Symmetry Axis of the Pole -- 7.3.8 V Curve of a Synchronous Machine -- 7.3.9 Excitation Methods of a Synchronous Machine -- 7.3.10 Permanent Magnet Synchronous Machines -- 7.3.11 Synchronous Reluctance Machines -- 7.4 DC Machines -- 7.4.1 Configuration of DC Machines -- 7.4.2 Operation and Voltage of a DC Machine -- 7.4.3 Armature Reaction of a DC machine and Machine Design -- 7.4.4 Commutation -- 7.5 Doubly Salient Reluctance Machine -- 7.5.1 Operating Principle of a Doubly Salient Reluctance Machine -- 7.5.2 Torque of an SR Machine -- 7.5.3 Operation of an SR Machine -- 7.5.4 Basic Terminology, Phase Number and Dimensioning of an SR Machine -- 7.5.5 Control Systems of an SR Motor -- 7.5.6 Future Scenarios for SR Machines -- Bibliography -- 8 Insulation of Electrical Machines -- 8.1 Insulation of Rotating Electrical Machines -- 8.2 Impregnation Varnishes and Resins -- 8.3 Dimensioning of an Insulation -- 8.4 Electrical Reactions Ageing Insulation -- 8.5 Practical Insulation Constructions -- 8.5.1 Slot Insulations of Low-Voltage Machines -- 8.5.2 Coil End Insulations of Low-Voltage Machines -- 8.5.3 Pole Winding Insulations -- 8.5.4 Low-Voltage Machine Impregnation -- 8.5.5 Insulation of High-Voltage Machines -- 8.6 Condition Monitoring of Insulation -- 8.7 Insulation in Frequency Converter Drives -- Bibliography -- 9 Losses and Heat Transfer -- 9.1 Losses -- 9.1.1 Resistive Losses -- 9.1.2 Iron Losses -- 9.1.3 Additional Losses -- 9.1.4 Mechanical Losses -- 9.1.5 Decreasing Losses. 9.1.6 Economics of Energy Savings -- 9.2 Heat Removal -- 9.2.1 Conduction -- 9.2.2 Radiation -- 9.2.3 Convection -- 9.3 Thermal Equivalent Circuit -- 9.3.1 Analogy between Electrical and Thermal Quantities -- 9.3.2 Average Thermal Conductivity of a Winding -- 9.3.3 Thermal Equivalent Circuit of an Electrical Machine -- 9.3.4 Modeling of Coolant Flow -- 9.3.5 Solution of Equivalent Circuit -- 9.3.6 Cooling Flow Rate -- Bibliography -- Appendix A -- Appendix B -- Index -- EULA.
In one complete volume, this essential reference presents an in-depth overview of the theoretical principles and techniques of electrical machine design. This timely new edition offers up-to-date theory and guidelines for the design of electrical machines, taking into account recent advances in permanent magnet machines as well as synchronous reluctance machines. New coverage includes: Brand new material on the ecological impact of the motors, covering the eco-design principles of rotating electrical machines An expanded section on the design of permanent magnet synchronous machines, now reporting on the design of tooth-coil, high-torque permanent magnet machines and their properties Large updates and new material on synchronous reluctance machines, air-gap inductance, losses in and resistivity of permanent magnets (PM), operating point of loaded PM circuit, PM machine design, and minimizing the losses in electrical machines> End-of-chapter exercises and new direct design examples with methods and solutions to real design problems> A supplementary website hosts two machine design examples created with MATHCAD: rotor surface magnet permanent magnet machine and squirrel cage induction machine calculations. Also a MATLAB code for optimizing the design of an induction motor is provided Outlining a step-by-step sequence of machine design, this book enables electrical machine designers to design rotating electrical machines. With a thorough treatment of all existing and emerging technologies in the field, it is a useful manual for professionals working in the diagnosis of electrical machines and drives. A rigorous introduction to the theoretical principles and techniques makes the book invaluable to senior electrical engineering students, postgraduates, researchers and university lecturers involved in electrical drives technology and electromechanical energy conversion.
9781118701621
Electric generators -- Design and construction.
Electric machinery -- Design and construction.
Electric motors -- Design and construction.
Rotational motion.
Electronic books.
TK2331 -- .P97 2014eb
621.31/042