First cycle
degree courses
Second cycle
degree courses
Single cycle
degree courses
School of Engineering
Course unit
INL1000247, A.A. 2018/19

Information concerning the students who enrolled in A.Y. 2017/18

Information on the course unit
Degree course First cycle degree in
IN2375, Degree course structure A.Y. 2017/18, A.Y. 2018/19
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Number of ECTS credits allocated 9.0
Type of assessment Mark
Website of the academic structure
Department of reference Department of Management and Engineering
E-Learning website
Mandatory attendance No
Language of instruction Italian
Single Course unit The Course unit can be attended under the option Single Course unit attendance
Optional Course unit The Course unit can be chosen as Optional Course unit

Teacher in charge EMANUELE SARTORI

ECTS: details
Type Scientific-Disciplinary Sector Credits allocated
Educational activities in elective or integrative disciplines ING-IND/31 Electrotechnics 6.0
Core courses ING-IND/32 Electrical Convertors, Machines and Switches 3.0

Course unit organization
Period First semester
Year 2nd Year
Teaching method frontal

Type of hours Credits Teaching
Hours of
Individual study
Lecture 9.0 72 153.0 No turn

Start of activities 24/09/2018
End of activities 18/01/2019
Show course schedule 2019/20 Reg.2017 course timetable

Examination board
Board From To Members of the board
1 2018 01/10/2018 15/03/2020 SARTORI EMANUELE (Presidente)
TINAZZI FABIO (Membro Effettivo)

Prerequisites: Basic knowledge from mathematics and physics courses, in particular: laws of electromagnetism, differential and integral calculus, complex numbers, vector operators (div, grad, rot).
Target skills and knowledge: Students will develop the following knowledge and skills during this course:
First Part: Electrical science
1- knowledge of the fundamental properties and methodologies for circuit analysis, and ability to model electric devices through simplified circuits and models;
2- knowledge of the laws of magnetic induction, and their application to magnetic circuits;
3- knowledge of the basic principles of generation, distribution, and conversion of the electric energy;
4- knowledge of protection systems and safety in electric installations;
5- ability to analyse electric circuits through basic methods and techniques, and their applicability limits;
6- ability to calculate voltages, currents and absorbed power on electric components of a circuit;

Second part: Electric machines
7- Knowledge of the operating principles of electric motors ;
8- knowledge of specific terminology, and understanding the parameters describing electromechanical systems;
9- ability to read and understand commercial catalogues and select the proper electromechanical device for given applications.
Examination methods: The final test is divided in written examination and oral part:
- During the written examination, the student is required to solve two applied problems (2 h), and answer to two open-ended questions (1h).
- During the oral test, the student is required to answer two open questions (at the blackboard).
The student will take the oral examination only if he gets a positive mark in the written part. The final mark is decided based on of both written and oral tests.
Assessment criteria: 1- analytical ability and correctness in the approach to applied problems;
2- exactness of numerical results in applied exercises;
3- completeness of theoretical knowledge related to electric science and electromechanical systems;
4- technical and theoretical rigor in the description of electrical applications;
5- terminological correction and distinction in the description of electrical applications;
6- completeness of the theoretical background concerning mechanical torque produced by electric motors;
7- ability to discuss fundamental equations of electric machines and their modelling with lumped models
8- presentation skills, rigor and clarity
Course unit contents: Part 1: Circuit Theory and Electromagnetic Fields (ING-IND/31, 6 CFU)
Fundamentals of electric circuits, 2-terminal, multi-terminal elements, nodes, loops. Electric current, electric voltage and electric potential, ampere-meter, volt-meter. Kirchhoff's laws, electric power, measuring conventions and energy balance. Linear and non-linear components: resistors, diodes, voltage and current sources; series and parallel connection, voltage divider and current divider.
DC steady-state circuit: properties of 2-terminal linear circuits, methods for linear circuit analysis: superposition of effects, Thevenin and Norton equivalent circuits. Maximum power transfer and Load matching in DC systems.
Application of electromagnetic field laws to electric circuits: Gauss, Ampere and Faraday-Henry-Neumann laws form the circuit point of view.
Magnetic properties of materials, magnetic permeability, ferromagnetic materials, hysteresis, magnetic circuits, stored energy, pressure and forces on magnetic materials. Energy storage elements: capacitors, inductors, coupled inductors, magnetic circuits, forces and energy.
AC steady-state circuits: Steinmetz's symbolic method, impedance, admittance. Instantaneous power, active, reactive, complex and apparent power, power balance, frequency-domain analysis of RLC circuits, resonance. AC circuit measurements. Maximum power transfer and impedance matching in AC systems.
Fundamentals of electrical machines: Power Transformers: equivalent circuit, operating conditions, applications. Eddy currents and induction heating for material processing.
Fundamentals of electric energy transmission and distribution systems: 3-phase systems,  / Y connections and transformation, reactive power compensation, rotating magnetic field.
Fault protection and safety codes for power distribution systems. Direct and indirect contacts, TT grounding scheme for personnel protection.
Solid-state power converters, non-controllable and controllable semiconductor devices, basic schemes for AC/DC and DC/AC power conversion.

Part 2: Electrical machines (ING-IND/32, 3 CFU)
Definition of electric machine. Functional block diagrams. Aspects of cost, efficiency, performance. Topologies of reluctance, electrodynamic, induction systems.
Principle of operation of the DC motor. Motor construction aspects. Analysis of technical catalogs.
Permanent magnet synchronous motor drives and DC brushless motors. Selection criteria and field-oriented control. Example of selection of synchronous motor from the catalog, according to the project specifications. Examples of motor constructions.
Asynchronous motors, operating principle. Voltage and torque equations at steady state. Scalar control, Volt / Hertz technique. Analysis of technical catalogs.
Stepper motors (VR, PM and hybrid). Principle of work, motor topologies available on the market and analysis.
Planned learning activities and teaching methods: Lecture-style instruction (blackboard or powerpoint slides) will cover the whole course program. Lessons dedicated to applied problems and exercises (electrical circuits) will also be given.
Three teachers (E.Sartori, G. Chitarin, F. Tinazzi) cover the different competencies of the course.
Additional notes about suggested reading: All didactic material will be available on the moodle platform
Textbooks (and optional supplementary readings)
  • G. Chitarin, F. Gnesotto, M. Guarnieri, A. Maschio, A. Stella, Elettrotecnica 1. Principi. Bologna: Editrice Esculapio, 2017. ISBN: 9788893850506 Cerca nel catalogo
  • G. Legnani, M. Tiboni, R. Adamini, Meccanica degli azionamenti - Vol. 1 Azionamenti Elettrici. Bologna: Progetto Leonardo, 2002. Cerca nel catalogo
  • M.Fauri, F. Gnesotto, G. Marchesi, A. Maschio, Lezioni di Elettrotecnica - Esercitazioni. Bologna: Esculapio, 2003. Cerca nel catalogo

Innovative teaching methods: Teaching and learning strategies
  • Lecturing
  • Auto correcting quizzes or tests for periodic feedback or exams
  • Loading of files and pages (web pages, Moodle, ...)

Innovative teaching methods: Software or applications used
  • Moodle (files, quizzes, workshops, ...)

Sustainable Development Goals (SDGs)
Affordable and Clean Energy Industry, Innovation and Infrastructure