OVERVIEW

Module of static and low frequency Electric and Magnetic Fields

AIMS AND CONTENT

LEARNING OUTCOMES

The module is designed to provide to Students the knowledge and operational skills indispensable to properly describe, analyze and solve problems of static and quasi-stationary Electric and Magnetic Fields, introducing the models based on their integral formulation, with particular emphasis on Magnetic Circuits and the practical applications of electromagnetic induction.

AIMS AND LEARNING OUTCOMES

At the end of the module, the Student shall have correctly understood the basic concepts of low frequency Electromagnetic Theory, shall be able to correctly classify the different types of encountered problems, and to correctly formulate the solution, arriving, when possible, to determine their analytical solution.

TEACHING METHODS

Theory lectures and related exercises in the second semester (6 credits).

SYLLABUS/CONTENT

• The equations of Electromagnetic Field in absence of relative motion among material media: Maxwell’s Equations in integral form. Constitutive equations of materials. Energy stored in the Electromagnetic Field.
• Static Electric Field: its evaluation methods. Energy and Forces. Principle of Virtual Work. Definition of resistance and capacity.
• Static Magnetic Field: its evaluation methods. Energy and Forces. Principle of Virtual Work.
• Magnetic materials: diamagnetic, paramagnetic and ferromagnetic.
• Magnetic Circuits. Self and mutual inductances. Definition of reluctance. Magnetic circuits built using linear, nonlinear materials, and permanent magnets. Magnetic networks.
• Quasi-stationary Electromagnetic Fields: Stray Currents. Magnetic Circuits in Steady State Alternate Current operations.
• Electromagnetic Induction: Lorentz’s Force. Faraday’s Law of Electromagnetic induction. Induced Voltage.
• Brief description to transient phenomena and high frequency Electromagnetic Fields.

RECOMMENDED READING/BIBLIOGRAPHY

- M. Nervi: “Dispense del corso”

Bibliography (for OPTIONAL study deepening on specific subjects):

• F. Barozzi, F. Gasparini: “Fondamenti di elettrotecnica: elettromagnetismo”, UTET, 1989
• S. Bobbio, E. Gatti: “Elementi di elettromagnetismo”, Boringheri, 1984
• M. A. Plonus: “Applied Electromagnetics”, McGraw-Hill international Editions, 1988

TEACHERS AND EXAM BOARD

Exam Board

MARIO NERVI (President)

PAOLA GIRDINIO

PAOLO MOLFINO

GIORGIO MOLINARI

MANSUETO ROSSI

MASSIMO BRIGNONE (President Substitute)

LESSONS

LESSONS START

According to the official teaching calendar

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

Oral only.

ASSESSMENT METHODS

The examination of Electric and Magnetic Fields is based on an oral discussion, lasting about 30 minutes, normally about the solution of practical problems, and optional questions about the related theory.

The final marking of Elettrotecnica is the average of the marks (rounded to the higher integer figure) of its modules (Electric Circuit and Electric and Magnetic Fields). The partial examinations must be passed in the following order: at first Electric Circuit, and afterwards Electric and Magnetic Fields.

Exam schedule