Vlado Ostovic

Dynamics of Saturated Electric Machines (eBook, PDF)

• Format: PDF

Produktbeschreibung

This book is a result of the author's work which was initiated about a decade ago and which, in the meantime, has resulted in his Ph.D. Thesis and several technical papers. The book deals with accurate modeling of electric machines during transient and steady states, a topic which has been usually avoided in the literature. The modeling techniques herein take into account all machine peculiarities, such as the type and connection of its windings, slotting, and saturation in the iron core. A special emphasis in the book is given to the exact physical interpretation of all phenomena which influence the machine's transient behavior. Besides the Introduction, the book has five chapters. The second chapter describes basic concepts of the magnetic equivalent circuit theory and has examples of magnetic equivalent circuits of several types of machines with their node potential equations. In the third chapter the transform matrices w' and w" of A.C. wind ings are derived. These matrices playa very important role in the magnetic equivalent circuit theory because they connect the quantities from the ma chine's magnetic equivalent circuit, branch fluxes, and mmfs with the ma chine's phase currents and fluxes.

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Produktdetails

• Verlag: Springer New York
• Seitenzahl: 445
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9781461389330
• Artikelnr.: 43987351

Inhaltsangabe

1 Introduction.- 2 Magnetic Circuits.- 2.1 Analogies Between Electric and Magnetic Circuits.- 2.2 Permeances in Magnetic Circuits.- 2.3 Sources in Magnetic Circuits.- 2.4 Force and Torque.- 2.5 Magnetic Equivalent Circuits of Electromagnetic Devices.- 2.6 Magnetic Equivalent Circuit Solution Procedure.- 3 Winding Transform Matrices.- 3.1 Winding Topology Matrix.- 3.2 Number of Turns per Coil Matrix.- 3.3 Coil Currents Matrix.- 3.4 Slot Ampere-Turns Matrix.- 3.5 Tooth Magnetomotive Force Matrix.- 3.6 Magnetomotive Force Transform Matrix w?.- 3.7 Coil Flux Matrix.- 3.8 Number of Turns per Elementary Phase Matrix.- 3.9 Elementary Phase Flux Matrix.- 3.10 Flux Transform Matrix w?.- 3.11 Summary of Winding Transform Matrices.- 3.12 Squirrel Cage Connection Matrices.- 4 Extended System of Machine Algebraic Equations.- 4.1 Squirrel Cage Induction Machine - A Simple Model.- 4.2 Squirrel Cage Induction Machine - A Complex Model.- 4.3 Wound Rotor Synchronous Machine.- 4.4 Permanent Magnet Synchronous Machine.- 4.5 Stepper and Switched Reluctance Motor.- 4.6 Shaded Pole Induction Motor.- 5 Machine System of Differential Equations and Complete System of Algebraic Equations.- 5.1 Stator Differential Equations of an A.C. Machine.- 5.2 Rotor Differential Equations of an A.C. Machine.- 6 Unique System of Machine Equations.- 6.1 Influence of Series-Added Impedance.- 6.2 k-Winding, n-Limb Transformer.- 6.3 Induction Machine - a Simple Model.- 6.4 Squirrel Cage Induction Machine - a Complex Model.- 6.5 Wound Rotor Synchronous Machine.- 6.6 Permanent Magnet Synchronous Machine.- 6.7 Step and Switched Reluctance Motor.- 6.8 Shaded Pole Induction Machine.- 6.9 Initial Conditions Definition.- Appendix I - Matrix Operators.- Appendix II - Vector and Matrix Differentiation.-Appendix III - Applications.- III.1. Squirrel Cage Induction Machine.- III.1.1 Starting Characteristics of the Basic Machine.- III.1.2 Basic Machine with Additional Inertia on the Shaft.- III.1.3 Basic Machine with a Decreased Number of Rotor Slots and an Additional Inertia on the Shaft.- III.1.4 Basic Machine with Linear B-H Curve and Additional Inertia.- III.1.5 Wye-Connected Basic Machine with Additional Inertia.- III.1.6 Reversing of the Basic Machine with Additional Inertia.- III.1.7 Basic Machine with Blocked Rotor.- III. 1.8 Basic Machine with Full Pitch Stator Winding and Additional Inertia.- III.1.9 Wye-Connected Basic Machine with 4/6 Winding Pitch.- III.1.10 Basic Machine with Unskewed Rotor and Additional Inertia.- III.1.11 Unsymmetric Connection of the Basic Machine.- III.1.12 Basic Machine in Steinmetz Connection.- III.1.13 Basic Machine with Additional Inertia Fed from a Six-Step Voltage Source Inverter.- III.1.14 Wye-Connected Basic Machine with Additional Inertia Fed from a Six-Step Voltage Source Inverter.- III.1.15 Basic Machine with Additional Inertia Fed from a Current Source.- III.1.16 Capacitor Braking of the Basic Machine.- III.1.17 D.C. Current Braking of the Basic Machine.- III.2. Permanent Magnet Synchronous Machine.- III.2.1 Starting of the Basic Machine without Permanent Magnets.- III.2.2 Starting of the Basic Machine.- III.2.3 Loading of the Basic Machine.- III.2.4 Heavy Loading - Loss of Synchronism.