Electromagnetic Fields in Electrical Engineering

Front Matter....Pages i-x
Introductory remarks....Pages 1-2
Power Losses in Electrotechnical Sheet Steel under Rotational Magnetization....Pages 3-7
AC High Magnetic Field Generation Due to Eddy-Current Concentration Effect....Pages 9-17
Scalar Potential Models for Magnetic Fields of Volume Current Distributions....Pages 19-24
The Electrodynamics of Ampere and Neumann....Pages 25-30
A Contribution to the Theory of Skin-Effect....Pages 31-36
Introductory remarks....Pages 37-38
Impedance and Losses in Magnetic Cylindrical Conductors....Pages 39-43
Errors of Solution of Classical and Variational Finite Difference Method Applied to Transient Electromagnetic Field Analysis....Pages 45-50
Analysis of Electromagnetic Shielding Problems Using the BEM....Pages 51-56
The Use of the Boundary Element Method in Transient Open Boundary Problems....Pages 57-62
Calculation of Electric and Magnetic Field by Means of the Method of Tubes and Slices....Pages 63-68
Introductory remarks....Pages 69-70
Perturbation Finite Element Method of Electromagnetic Field Calculation for Eddy-Current Coupling....Pages 71-76
Macro - Element in Cartesian Coordinates....Pages 77-82
Analysis of Transients in Electrical Circuits Containing Initially Magnetized Ferromagnetics for Impulse Excitation....Pages 83-88
3-D Reactance Calculation of Air-Core Coils with Magnetic Screening....Pages 89-92
Introductory remarks....Pages 93-94
A Method for Losses Evaluation in Large Power Transformer Tanks....Pages 95-100
The FEM Analysis of Magnetic Field in Converter Transformers During Faults....Pages 101-106
Additional Losses in Frequency Tripler Windings....Pages 107-112
Stray-Load Losses in Yoke-Beams of Transformers....Pages 113-118
Influence of Structure Geometry, Screens and Eddy Currents on the Critical Distance of Tank Wall in Power Transformers....Pages 119-127
Numerical Analysis of Inrush Currents in Transformers....Pages 129-134
Improvement of Transformer Core Loss by Use of Low-Loss Electrical Steel....Pages 135-140
Currents and Forces in Conductors of Rectangular Cross Section....Pages 141-147
Introductory remarks....Pages 149-150
Magnetic Shielding of Turbo-Generator Overspeed Test Tunnels....Pages 151-156
An Equivalent Circuit Model for Inverter-Fed Synchronous Machines....Pages 157-162
Magnetic Field and Force of Linear Induction Motor Fed From Non-sinusoidal Source....Pages 163-169
Electromagnetic Parameters of a Turbogenerator Determined by the Finite Element Calculation....Pages 171-176
Analysis of the Implications of Main Field Entities On Commutation in Field Regulated D.C. Motors....Pages 177-183
Introductory remarks....Pages 185-186
Coupling of the Finite Element and Boundary Element Methods by Iterative Technique....Pages 187-192
Effect of Magnetic Saturation On the Air-Gap Flux Density Wave in Polyphase Induction Machines....Pages 193-198
Hybrid Simulation of Electromagnetic Field in Squirrel-Cage Winding....Pages 199-204
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....Pages 205-210
Peculiarities of Electromagnetic Field in Slots....Pages 211-216
Introductory remarks....Pages 217-218
Numerical Analysis of Effect of Material and Structural Parameters on Magnetic Bearing Performance....Pages 219-224
The Finite Element Method Solution for the Stationary Two-Dimensional Thermal Problem....Pages 225-229
Force Calculation in Electromagnetic Devices....Pages 231-235
Electromagnetic Fields and Forces in a Linear Induction Motor during Direct Current Braking....Pages 237-242
Numerical Analysis of Electromagnetic and Temperature Fields in Induction Heated Ferromagnetic Slabs....Pages 243-248
Introductory remarks....Pages 249-250
Computer - Aided Modelling and Simulation of Fast Transient Phenomena in Large Coils....Pages 251-256
Remote Electromagnetic Propulsion in the Presence of a Metallic Shield....Pages 257-262
Application of the Harmonic Analysis Technique to Determining Eddy Currents in Conducting Plates....Pages 263-268
Numerical Field Calculation of Earthing Systems....Pages 269-274
Computer-Aided Design Technique for Proportional Electromagnets....Pages 275-278
Reluctance Network Analysis of Coupled Fields in a Reversible Electromagnetic Motor....Pages 279-283
Introductory remarks....Pages 285-286
The State of Art in the Synthesis of Electromagnetic Fields....Pages 287-292
Comparative Analysis of Numerical Methods for Shape Designing....Pages 293-298
Synthesis of a Turbo-Generator Nonlinear Parametric Model for the Analysis Problems of Power Industry System Regimes....Pages 299-304
Back Matter....Pages 305-307