- Docente: Arturo Popoli
- Credits: 6
- SSD: ING-IND/31
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Cesena
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Corso:
First cycle degree programme (L) in
Biomedical Engineering (cod. 9082)
Also valid for First cycle degree programme (L) in Electronics Engineering (cod. 5834)
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from Sep 20, 2023 to Dec 14, 2023
Learning outcomes
At the end of the course the student has a basic knowledge of the theory behind electric and magnetic circuits. The student is able to apply the main methods for the steady-state, transient and periodic analysis circuits. The student knows the properties and methods of analysis of three-phase systems, as well as the principle of operation of single-phase transformers.
Course contents
Requirements:
- Basic electromagnetics
- Basic calculus (trigonometry, complex numbers, derivatives, integrals)
The lessons are held in Italian. The lecture notes that will be provided by the teacher are in Italian.
Course contents:
Steady-state resistive circuits
Lumped circuits. Kirchhoff's laws. Resistors, independent and dependent voltage and current sources. Resistors in series and parallel. Delta-wye transformations. Circuit analysis methods (Kirchhoff's equations method, node-voltage method). Superposition principle. Thevenin and Norton's theorems. Two-ports.
Transients in electrical circuits
Capacitors, inductors. First-order circuits (RC, RL circuits). Second-order circuits (series and parallel RLC circuits).
Sinusoidal steady-state analysis
Symbolic Ohm's law, impedance. Kirkhhoff's laws in sinusoidal steady-state. Sinusoidal steady-state circuit analysis. Power in AC circuits. Power factor correction.
Three phase systems
Definition of a balanced line voltage system and a balanced line current system. Relations between line and phase voltages. Three phase loads and generators. Power in three phase systems. Use of the neutral wire. Power factor correction. Comparison between different power transmission systems.
Magnetic circuits
Diamagnetic, paramagnetic and ferromagnetic materials. Magnetic circuits, magnetic reluctance. Hopkinson's law. Self and mutual inductance. Energy and power balance in power systems.
Single-phase transformer
Power losses in electrical machines. Transformer working principle. Ideal and real transformer equivalent circuits.
Readings/Bibliography
Books – in English (both texts below include many exercises):
- C. Alexander, M. Sadiku, "Fundamentals of Electric Circuits", McGraw-Hill
- A. Hambley, “Electrical Engineering Principles and Applications”, Pearson
For the introductory part on electromagnetics
- D. J. Griffiths, “Introduction to Electrodynamics”, Prentice Hall
Books – in Italian:
- C. Alexander, M. Sadiku, "Circuiti Elettrici", McGraw-Hill
- R. Perfetti, "Circuiti elettrici", Zanichelli
- G. Chitarin, F. Gnesotto, M. Guarnieri, A. Maschio, A. Stella, "Elettrotecnica 1 - Principi", Società Editrice Esculapio
- G. Chitarin, F. Gnesotto, M. Guarnieri, A. Maschio, A. Stella, "Elettrotecnica 2 - Applicazioni", Società Editrice Esculapio
- P. Ghigi, M. Martelli, F. Mastri, Esercizi di Elettrotecnica, Società Editrice Esculapio
Teaching methods
The course consists of 60 hours of teaching. 40 hours are dedicated to theory and 20 to exercises.
Assessment methods
The exam is subdivided in two parts: exercises and theory. In order to access the theory test, a minimum grade of 18/30 must be obtained in the exercises test.
- Exercises
- 2 exercises in two hours. Needed: calculator, optional: handwritten A4-format formulary (two-sided)
- Theory:
- 2 questions in one hour. Needed: calculator.
The final grade is given by the average of the two tests. See the Virtuale course page for further details.
Teaching tools
Handwritten lecture notes and slides will be made available during the course.
Office hours
See the website of Arturo Popoli