- Docente: Franco Mastri
- Credits: 9
- SSD: ING-IND/31
- Language: Italian
- Moduli: Franco Mastri (Modulo 1) Franco Mastri (Modulo 2)
- Teaching Mode: Traditional lectures (Modulo 1) Traditional lectures (Modulo 2)
- 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. 0946)
Learning outcomes
Knowledge of basic circuit theory, methods for circuit analysis in
steady-state, transient and periodic regime, three-phase systems,
magnetic circuits, principle of operation of single-phase and three
phase transformers.
Course contents
Module 1
Basic concepts
Lumped circuits. Circuit elements. Voltage and current.
Power and energy. Sign conventions. Passive and active
elements.
Kirchhoff's laws. Elementary network topology.
D. C. circuits
Resistors. Independent voltage and current sources. Series and
parallel circuits. Current and voltage dividers. Source
transformations. Millman's formulas.
Resistive two-port elements: R and G parameters, hybryd
paramenters, transmission parameters, relationship between
parameters, wye-delta transformation, dependent sources, ideal
transformer.
Analisys methods: tableau analysis, node-voltage and mesh-current
methods.
Network theoremes: Tellegen's theorem, superposition principle,
Thevenin's and Norton's theorems, non-amplification
propeties, reciprocity theorem.
A.C. circuits
Capacitors. Inductors. Coupled inductors.
Phasors. Impedance and admittance. Circuit analysis in the phasor
domain.
Power in AC circuits: active, reactive, and apparent power. Complex
power. Effective (RMS) values. Power factor correction. Maximum
power transfer.
Frequency response. Transfer function. Resonance.
Non-sinusoidal periodic regime. Introduction to Fourier
series.
Transient analysis
First order RC and RL circuits. Initial conditions. Transient and
steady state response. Zero input and zero state response. Second
order RLC circuits. State equations.
Module 2
Three phase systems
Wye and delta connections, symmetrical and balanced systems,
asymmetrical and unbalanced systems, power in three phase systems,
power factor correction.
Magnetic circuits
Review of stationary magnetic field laws, ferromagnetic materials,
magnetic hysteresis, reluctance and permeance, Hopkinson's law,
magnetic circuit analysis, self and mutual induction.
Transformers
Operating principle, energy losses, internal equations,
equivalent circuits, open-circuit and short-circuit tests,
efficiency, parallel connection of transformers, three-phase
transformers, special transformers.
Readings/Bibliography
Lecture slides are available at the following address:
http://www.die.ing.unibo.it/pers/mastri/didattica.htm
Exercises:
- P. Ghigi, M. Martelli, F. Mastri. Esercizi di Elettrotecnica. Società Editrice Esculapio.
- R. Perfetti. Circuiti elettrici. Zanichelli.
- C.K. Alexander, M.N.O. Sadiku. Circuiti elettrici. McGraw-Hill.
- G. Rizzoni. Elettrotecnica: Principi ed applicazioni. McGraw-Hill.
- G. Fabricatore, Elettrotecnica ed applicazioni, Ed. Liguori.
Teaching methods
Theoretical lessons and numerical exercises.
Assessment methods
The exam consists of a written test and includes a set of
exercises, aiming to verify that the students understand and know
how to apply the methods of circuit analysis, and a questionnaire
on the theoretical aspects of the course.
During the examination is not allowed to consult books or notes,
while the use of a calculator is recommended.
More information about the exam will be provided during the course
and, in particular, examples resolution of exam exercises be
presented during the exercitations. Exam exercises proposed in
previous years and their solutions are available at the address http://www.die.ing.unibo.it/pers/mastri/didattica.htm
Links to further information
http://www.die.ing.unibo.it/pers/mastri/didattica.htm
Office hours
See the website of Franco Mastri