Principles of AC Machines

Ahmed Abokhalil is currently an Associate Professor of Sustainable and Renewable Energy Engineering at the University of Sharjah. His research interest includes power electronics, with an emphasis on modeling and control as well as applications in aerospace, IT, and power systems. His recent research focuses on power electronics for renewable energy and other power system applications.Ramesh C. Bansal is a Professor in the Department of Electrical Engineering at University of Sharjah. His research interests are in the areas of renewable energy and conventional power systems which include wind, photovoltaics (PV), hybrid power systems, distributed generation, grid integration of renewable energy, power systems analysis, and smart grid.

• Chapter 1. Introduction to Electrical Machines. 1.1 Introduction. 1.2 Magnetic Circuit Analysis. 1.3 Magnetic Materials. Chapter 2. Fundamentals of Electrical Machines. 2.1 Electromechanical Fundamentals. 2.2 Electromagnetic Force on a Conductor. Chapter 3. Power Transformers. 3.1 Introduction. 3.2 Transformer Principles of Operations. 3.3 Ideal Transformer. 3.4 Transformer ratings. 3.5 The practical (real) transformer. 3.6 Equivalent Circuit for a Practical Transformer. 3.7 Determination of Equivalent Circuit Parameters. 3.8 Voltage regulation. 3.9 Losses and efficiency. 3.10 Poly-phase transformer. Chapter 4. Synchronous generators. 4.1 Introduction. 4.2 Synchronous Machine Structure. 4.3 Rotating field. 4.4 EMF equation. 4.5 Harmonic E.M.F. 4.6 Magnetic Fluxes in Alternators. 4.7 Concept of Synchronous Reactance and Impedance. Chapter 5. The Synchronous Generator Steady State Performance. 5.1 Voltage regulation of a generator. 5.2 Vector diagram of machine MMF. 5.3 Determination of Voltage Regulation. 5.4 Power-Angle characteristics. 5.5 Performance Circle Diagram. 5.6 Parallel Operation and Load Division. Chapter 6. Synchronous Motor. 6.1 Introduction. 6.2 Effect of Increasing or Decreasing the excitation. 6.3 Effect of Increasing mechanical load. 6.4 V-Curves of Synchronous Motor. 6.5 Power Factor Correction. 6.6 Applications of Synchronous Motor. Chapter 7. Poly-phase Induction Motors. 7.1 Introduction. 7.2 Construction of Induction Motors. 7.3 Principles of Operation. 7.4 The Concept of Slip. 7.5 The Frequency of Rotor Voltages and Current. 7.6 The Equivalent Circuit of an Induction Motor. 7.7 Determination of Equivalent Circuit Parameters. 7.8 Induction Motor Performance. 7.9 Torque-Speed Characteristics of Induction Motor. Chapter 8. Induction Motors Control. 8.1 Introduction. 8.2 Starting of induction Motors. 8.3 Speed Control of 3-Phase Induction Motor. 8.4 Squirrel-Cage Induction Motor. 8.5 Special Rotor Constructions. 8.6 Circle Diagram. Chapter 9. Single-phase induction motors. Chapter 10. Stepper motors