Electromagnetic Fields in Electrical Engineering

1. Fundamental Problems.- Introductory Remarks.- Power Losses in Electrotechnical Sheet Steel under Rotational Magnetization.- AC High Magnetic Field Generation Due to Eddy-Current Concentration Effect.- Scalar Potential Models for Magnetic Fields of Volume Current Distributions.- The Electrodynamics of Ampere and Neumann.- A Contribution to the Theory of Skin-Effect.- 2. Computer Programmes.- Theoretical aspects.- Introductory Remarks.- Impedance and Losses in Magnetic Cylindrical Conductors.- Errors of Solution of Classical and Variational Finite Difference Method Applied to Transient Electromagnetic Field Analysis.- Analysis of Electromagnetic Shielding Problems Using the BEM.- The Use of the Boundary Element Method in Transient Open Boundary Problems.- Calculation of Electric and Magnetic Field by Means of the Method of Tubes and Slices.- Practical Use.- Introductory Remarks.- Perturbation Finite Element Method of Electromagnetic Field Calculation for Eddy-Current Coupling.- Macro-Element in Cartesian Coordinates.- Analysis of Transients in Electrical Circuits Containing Initially Magnetized Ferromagnetics for Impulse Excitation.- 3-D Reactance Calculation of Air-Core Coils with Magnetic Screening.- 3. Transformers.- Introductory Remarks.- A Method for Losses Evaluation in Large Power Transformer Tanks.- The FEM Analysis of Magnetic Field in Converter Transformers During Faults.- Additional Losses in Frequency Tripler Windings.- Stray-Load Losses in Yoke-Beams of Transformers.- Influence of Structure Geometry, Screens and Eddy Currents on the Critical Distance of Tank Wall in Power Transformers.- Numerical Analysis of Inrush Currents in Transformers.- Improvement of Transformer Core Loss by Use of Low-Loss Electrical Steel.- Currents and Forces in Conductors of Rectangular Cross Section.- 4. Electrical Machines.- Synchronous Machines, DC and Linear Motors.- Introductory Remarks.- Magnetic Shielding of Turbo-Generator Overspeed Test Tunnels.- An Equivalent Circuit Model for Inverter-Fed Synchronous Machines.- Magnetic Field and Force of Linear Induction Motor Fed from Non-sinusoidal Source.- Electromagnetic Parameters of a Turbogenerator Determined by the Finite Element Calculation.- Analysis of the Implications of Main Field Entities on Commutation in Field-Regulated.- Induction Machines.- Introductory Remarks.- Coupling of the Finite Element and Boundary Element Methods by Iterative Technique.- Effect of Magnetic Saturation on the Air-Gap Flux Density Wave in Polyphase Induction Machines.- Hybrid Simulation of Electromagnetic Field in Squirrel-Cage Winding.- Induction Machine with Anisotropic Multilayer Rotor Modelling the Electromagnetic and the Electrodynamic States of a Symmetrical Machine with Deep Bar Cage in Solid Iron Rotor Core.- Peculiarities of Electromagnetic Field in Slots.- 5. Mechanical And Thermal Effects.- Introductory Remarks.- Numerical Analysis of Effect of Material and Structural Parameters on Magnetic Bearing Performance.- The Finite Element Method Solution for the Stationary Two-Dimensional Thermal Problem.- Force Calculation in Electromagnetic Devices.- Electromagnetic Fields and Forces in a Linear Induction Motor During Direct Current Braking.- Numerical Analysis of Electromagnetic and Temperature Fields in Induction Heated Ferromagnetic Slabs.- 6. Various Applications.- Introductory Remarks.- Computer-Aided Modelling and Simulation of Fast Transient Phenomena in Large Coils.- Remote Electromagnetic Propulsion in the Presence of a Metallic Shield.- Application of the Harmonic Analysis Technique to Determining Eddy Currents in Conducting Plates.- Numerical Field Calculation of Earthing Systems.- Computer-Aided Design Technique for Proportional Electromagnets.- Reluctance Network Analysis of Coupled Fields in a Reversible Electromagnetic Motor.- 7. Synthesis.- Introductory Remarks.- The State of Art in the Synthesis of Electromagnetic Fields.- Comparative Analysis of Numerical Methods for Shape Designing.- Synthesis of a Turbo-Generator Nonlinear Parametric Model for the Analysis Problems of Power Industry Systems Regimes.