- Docente: Arturo Popoli
- Credits: 6
- SSD: ING-IND/31
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Cesena
-
Corso:
First cycle degree programme (L) in
Electronics Engineering for Energy and Information (cod. 8767)
Also valid for First cycle degree programme (L) in Biomedical Engineering (cod. 9082)
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 knowledge
- Basic calculus knowledge (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. Kirkhhoff's laws. Resistors, independent and dependent voltage and current sources. Resistors in series and parallel. Delta-wye transformations. Two-ports, multiports. Circuit analysis methods (Kirkhhoff's equations method, node-voltage method). Superposition principle. Tellegen's theorem. Thevenin and Norton's theorems.
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.
Introduction to Power systems and electrical safety
Power lines. Overvoltages, overcurrents, relays, fuses. Effects of Electric Currents on the human body. Earthing systems.
Readings/Bibliography
- 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 (2 exercises, two hours)
- Theory (2 questions, one hour)
In order to access the theory test, a minimum grade of 18/30 must be achieved in the exercises test.
The final grade is given by the average of the two tests.
Teaching tools
Lecture notes and slides will be made available during the course.
Office hours
See the website of Arturo Popoli