CODE  60337 

ACADEMIC YEAR  2023/2024 
CREDITS 

SCIENTIFIC DISCIPLINARY SECTOR  INGIND/31 
LANGUAGE  Italian 
TEACHING LOCATION 

SEMESTER  1° Semester 
TEACHING MATERIALS  AULAWEB 
OVERVIEW
The course gives the essential elements for understanding of analysis and exploitation of the electromagnetic phenomena. In the first part of the course the instruments for static and quasistatic analysis by circuit methods are introduced. In the second part of the course the principal application aspects of exploitation of power electromagnetic phenomena are introduced: electrical motors, power electronics and power electrical systems.
AIMS AND CONTENT
LEARNING OUTCOMES
The course is aimed to supply fundamental acquaintances and mathematical instruments for the study and the analysis of the electric circuits in direct current and alternating current domain; the electrical motors, the power electronic system, the electrical drives and the energy power systems.
AIMS AND LEARNING OUTCOMES
Attending lessons and exercises, the students will be able to:
 have knowledge relative to theoretical bases and application instruments for the analysis of electric circuits in steadystate and sinusoidal regime (single phase and threephase systems);
 have superficial knowledge of the mathematical instruments for the analysis of electric circuits in timedomain;
 have knowledge of the main physics phenomena who subtend to the operation of the electrical machines (transformers, synchronous and induction machines);
 have knowledge of first rudiments for the analysis of transformers and induction motors in operation;
 have knowledge of the main aspects relevant to power electronics and static converters;
 have knowledge, in descriptive way, of electrical drives and their applications;
 have knowledge of main aspects relative to the analysis of the electric power systems;
 have knowledge of simplified analysis techniques for lowvoltage electric systems, with detailed knowledge about evaluation of: efficiency, voltage drop, power evaluations. They will know also the problems relevant to lowvoltage power factor correction and power capacitors evaluation.
PREREQUISITES
Basics knowledge of Calculus and Physics.
TEACHING METHODS
The course mainly develops through frontal lessons with computer and audiovisual aids (70 hours). Moreover sessions of exercises carried out in classroom are provided (about 30 hours). The students who attend the course must record themselves to the site AulaWeb, enrolling themselves to the course. In such a way they will have access to didactic material of the course, will receive via email communications of the teacher and will have access to the results of the written tests.
For the development of the exercises in classroom, two hours weekly , in preparation of the practical tests, will be scheduled. To leave, indicatively, from the second week of October.
SYLLABUS/CONTENT
Circuits
 Introduction – Electrical power transmission  Electrical generators, electrical users, Electrical lines.
 Electromagnetic phenomena: General approach to the solution of the electromagnetic problems  Electric charge  Electrical current  Conductors  Continuity Law  Measure of the electrical current: ammeter  Electric field – Electric Voltage  Measure of the electric voltage: voltmeter.
 Electrical Conduction: Ohm’s and Joule’s Laws  Electrical resistivity and conductivity  Conductors of generic form  Bipolar resistor  Characterization of a bipolar resistor.
 Electrical Generators: Introduction – Behaviors of generators in open circuit  Behavior of generators with loads  Energy balance of generators – Electrical generators types.
 Bipolar devices and energy balance: Introduction – Equations of bipolar devices – Special bipolar devices (short circuit and open circuit) – Rate of electrical energy  Measure of the electrical power: wattmeter.
 Electrical network Properties: Introduction  Regime of operation (stationary, variable, transitory)  Analysis of the electrical networks  Topology of the networks  Kirchhoff’s Laws – Network analysis methods.
 Steady state analysis: Introduction – Bipolar devices connected in series – Series connection of an ideal voltage generator and a resistor  Resistors in series: equivalent resistance – Bipolar devices connected in parallel  Parallel connection of an ideal current generator and a resistor  Resistors in parallel: equivalent conductance  Network of resistors: equivalence concept  Stardelta transform – Steadystate analysis Methods  Superposition method – Maxwell’s method  Network reduction  Substitution Theorem – Thevenin’s transform – Norton’s transform – Millmann’s Formula – Power matching  Maximum power transfer.
 Dielectric phenomena – Capacitor : Introduction – Gauss’s Law  Capacitor – Parallelplate capacitor Bipolar capacitor – Capacitor in steadystate regime  Capacitor in transient regime  electrostatic Energy  Series and parallel of capacitors  Displacement current.
 Magnetic phenomena  Inductor: Introduction  Magnetic materials  Ferromagnetic materials  magnetic Induction  FaradayNeumann’s Law  Inductors – Inductor coils  Mutual inductors – Bipolar inductors and two port inductors  Inductors in steadystate regime  Inductors in transient regime  Magnetic energy  Series and parallel of inductors.
 Sinusoidal steadystate networks: Introduction – Sinusoidal quantities: Phasors and sinusoids – Phasors graphical operations  generalized Ohm’s Law  Impedance – Sinusoidal steadystate network analysis – Thevenin’s and Norton’s transforms  Power balance in steadystate sinusoidal regime (average power, reactive power, complex power)  Measuring instruments in a.c.
 Threephase network analysis: Introduction  symmetrical threephase voltages  Phase and line voltages – Threephase balanced load – Currents in threephase networks – Balanced load analysis – Singlephase equivalent  Powers in balanced threephase systems.
 Magnetic circuits: Introduction  Reluctance – Ferromagnetic materials  Air gap  Magnetic circuit’s Laws  Network analysis of magnetic circuits.
Electrical machines
 Transformers: Singlephase transformers  Equivalent circuit of the transformer – Noload (opencircuit) and short circuit tests – Power transformer on load  Threephase transformers  Equivalent circuit of the threephase transformer.
 Induction machines: Basic principles of a threephase induction machine – Action of a threephase induction machine  Simplified equivalent circuit  Speedtorque Characteristics – Starting of induction motors  Induction machine acting as generator.
 Synchronous Machines: Constructional features – Basic principles – Noload characteristics of a synchronous machine  Synchronous machine on load  Equivalent circuit of the synchronous machine  Electromechanical behavior.
 Converters
Power systems
 Basic notions on power grids
RECOMMENDED READING/BIBLIOGRAPHY
Written support are available online on AulaWb site. There are various folder, where:
in folder "appunti del corso" are available for download pdf copies of teaching slides.
in folder "esercitazioni" are available for download pdf copies of solved exercises.
in folder "risultati delle prove scritte" are available for download pdf copies of past written exams.
It is also useful consulting of following books available from school CBA:
M. Guarnieri, A. Stella: “Principi ed applicazioni di Elettrotecnica (volume primo)”, Edizioni Libreria Progetto Padova.
C. K. Alexander, M.N.O. Sadiku: “Circuiti elettrici”, McGrawHill, ISBN 88 386 08539.
C. A. Desoer, S. Kuh: “Fondamenti di teoria dei circuiti”, Franco Angeli Editore, Collana di Ingegneria Elettrica.
M. Repetto, S. Leva: "Elettrotecnica  Elementi di teoria ed esercizi", CittàStudi Edizioni, Torino.
TEACHERS AND EXAM BOARD
Ricevimento: Office hours: on request (contacts: mansueto.rossi@unige.it, +393285423470)
Ricevimento: Students that need further clarifications will be received on appointment (email: massimo.brignone@unige.it), both using remote (via Microsotf Teams) as well as frontal meetings.
Exam Board
MANSUETO ROSSI (President)
DANIELE MESTRINER
PAOLO MOLFINO
MARIO NERVI
MASSIMO BRIGNONE (President Substitute)
LESSONS
LESSONS START
Class schedule
The timetable for this course is available here: Portale EasyAcademy
EXAMS
EXAM DESCRIPTION
The exam requires positive evaluation on a written test followed by an oral examination.
Written test: two written tests will be scheduled during the period of lesson (compitini). Each test require the solution of an exercise (one hour). Other written tests will be scheduled during the periods of examinations (JanuaryFebruary and JuneSeptember). Each test requires the solution of two exercises (two hours).
For every proposed exercise it must be answered to three questions, each of which it is worth a point, for a total on the two exercises of 6 points. Admission to oral test requires total score turns out to be ≥ 4 on 6. Regarding the intermediate written tests, students attending the course for the first time are admitted.
The overcoming of written tests guarantees the admission to the oral tests until the first written test of the following academic year. Exceeded such term the written test must be newly old.
Oral examination: talk of approximately 30 minutes on practical examples (exercises) and theoretical arguments. Oral test will be possible during the periods of interruption of the lessons, the registration to the examination sessions with a restricted number is carried out by means of the online procedure. The registrations is opened beginning from the week precedence to that of the session of examination chosen. In lessons periods oral tests are provided on appointment basis, only for students who have finished the triennial cycle (students who have already attended the third year courses).
Students with SLD, with disabilities, or with other regularly certified special educational needs will agree with the teacher on the exam method and the compensatory instruments, by contacting the instructor at least 10 days before the exam. They will also be able to take advantage of the additional time required by law.
ASSESSMENT METHODS
The examination tests have the scope to assess the level of students preparation with detailed emphasis on the following aspects:
 acquaintances with respect to the main basics elements that characterize the study of the electric circuits (for example: concept of twoterminal network, Ohm’s and Kirchhoff’s laws, Thevenin and Norton transform, Millmann’s formulas, sinusoidal analysis, etc) –acquaintances evaluated during the oral test;
 ability to apply them on specific problems (solution of numerical exercises: written test);
 acquaintances with respect to the main applicative aspects of electromagnetism (for example: transformers, induction machines, power electronics, electric power systems) – acquaintances evaluated during the oral test;
 ability to analyze simple problems relevant to lowvoltage electric power systems, who involve the analysis of transformers, induction motors, electricity endusers, lowvoltage power factor correction (solution of numerical exercises: written test).
Exam schedule
Data appello  Orario  Luogo  Degree type  Note 

03/01/2024  09:00  GENOVA  Scritto  
10/01/2024  09:00  GENOVA  Orale  
24/01/2024  09:00  GENOVA  Orale  B4 
30/01/2024  09:00  GENOVA  Scritto  G2B 
14/02/2024  09:00  GENOVA  Orale  B4 
29/05/2024  09:00  GENOVA  Scritto  E4 
05/06/2024  09:00  GENOVA  Orale  B4 
25/06/2024  09:00  GENOVA  Orale  E2 
03/07/2024  09:00  GENOVA  Scritto  E3 
18/07/2024  09:00  GENOVA  Orale  E2 
28/08/2024  09:00  GENOVA  Scritto  E3 
11/09/2024  09:00  GENOVA  Orale  E2 