ΕΠΙΛΥΣΗ ΤΟΥ ΜΗ ΓΡΑΜΜΙΚΟΥ ΠΡΟΒΛΗΜΑΤΟΣ ΤΩΝ ΠΟΛΛΩΝ ΡΕΥΜΑΤΟΦΟΡΩΝ ΑΓΩΓΩΝ ΜΕ ΤΗ ΜΕΘΟΔΟ ΠΕΠΕΡΑΣΜΕΝΩΝ ΣΤΟΙΧΕΙΩΝ

THE FIRST PART IS A FINITE ELEMENT FORMULATION OF THE MULTICONDUCTOR PROBLEM. THE METHOD IS USED FOR THE FIELD COMPUTATION IN A 3-PHASE GAS INSULATED CABLE. THE PHASE CONDUCTORS CARRY SINUSOIDAL CURRENTS IN A STEADY-STATE AND BALANCED CONDITION. BOTH SYMMETRICAL AND NON-SYMMETRICAL CONDUCTOR ARRANGEMENTS ARE EXAMINED, TAKING INTO ACCOUNT THE REAL GEOMETRICAL AND PHYSICAL CABLEPROPERTIES. LOSSES, FORCES, INDUCTANCES AND CURRENT DENSITY DISTRIBUTION ARE CALCULATED. THE SECOND PART IS A COMPLEX ANALYSIS OF THE NONLINEAR DIFFUSION PROBLEM IN FERROMAGNETIC MATERIALAS UNDER STEADY-STATE EXCITATION, THE PROBLEM IS SOLVED BY CONSIDERING AN EQUIVALENT FICTITIOUS MATERIAL WHERE THE RELATIVE PERMEABILITY IS ASSUMED TO BE CONSTANT IN TIME BUT DIFFERENT FROM POINT TO POINT, AND IS RELATED TO THE NONLINEAR B-H CURVE WITH THE HELP OF THE STORED MAGNETIC CO-ENERGY . METHODIS USED IN A ONE-DIMENSIONAL THICK STEEL PLATE AND IN A THREE-PHASE GAS CABLE WITH FERROMAGNETIC SHEATH.

Grantor dc:publisher

Aristotle University Of Thessaloniki (AUTH)

Year dc:date

1989

Authors dc:creator

• Λαμπρίδης, Δημήτριος
• Labridis, Dimitrios

• Απώλειες
• ΔΥΝΑΜΕΙΣ
• Εξίσωση διάχυσης
• ΚΑΛΩΔΙΑ ΑΕΡΙΟΥ
• ΛΙΝΟΡΡΕΥΜΑΤΑ
• Μέθοδος πεπερασμένων στοιχείων
• Diffusion equation
• EDDY CURRENTS
• Finite elements method
• FORCES
• GAS CABLES
• Losses
• Επιστήμες Μηχανικού και Τεχνολογία
• Επιστήμη Ηλεκτρολόγου Μηχανικού, Ηλεκτρονικού Μηχανικού, Μηχανικού Η/Υ
• Engineering and Technology
• Electrical Engineering, Electronic Engineering, Information Engineering

Language dc:language

gre

Identifier

10.12681/eadd/1430

OAI identifier oai:identifier

oai:10442/1430