PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING
Learning outcomes of the course unit
This module aims to provide students with the basic knowledge and skills needed for the analysis of electrical circuits in Direct and Alternating Current, as well as the technical and regulatory tools in the field of production, management and use of electricity, in order to make the management engineers able to adequately and consciously interact with internal company structures, with customers and suppliers.At the end of the course students are expected to be able to:- Know how to analyze circuits in direct current- Know how to analyze circuits alternating current- understand the main advantages and disadvantages related to the production of electricity from different energy sources, with particular reference to renewable sources.
Course contents summary
Ohm's law. Kirchhoff's circuit laws. Thèvenin’s theorem and Norton’s theorem. Millman’s theorem. Analysis of circuits in DC. Alternating current and voltage. Solution of circuits in AC. Three phase systems. Transformer. Energy distribution systems, generation from renewable sources and safety principles in electric circuits.
1) Introduction to circuit analysis (4 hours).Voltage and currents. Resistor, voltage and current independent generators, Ohm's laws, energy. Voltage and current limits, rated values.2) Direct current circuits analysis and synthesis (12 hours).Connections among bipoles. Kirchhoff's principles. Mesh analysis, node analysis, delta/wye transformations, superposition principle, Millman's theorem. Thevenin's theorem, Norton's theorem. Measurement instruments. 3) Reactive elements in circuits (4 hours).Electric filed, capacitance, capacitor, constitutive law of the capacitor. Dielectrics and electrical insulation. Energy behaviour. Charge and discharge.Magnetic field, diamagnetic, paramagnetic and ferromagnetic materials. Faraday-Lenz's law. Inductor, constitutive law of an inductor, energy behaviour. Magnetic circuits. Charge and discharge. Connections among reactive components. Series and parallel resonance.4) Electric circuits with sinusoidal supply (10 hours)Symbolic method (Steinmetz's transform). Active and reactive power, power factor, Boucherot's theorem. Power factor correction. Introduction to polyphase systems and electric energy transmission. Maximum power transfer theorem.5) Coupled inductors and transformers (4 hours).Mutual inductance, ideal and real transformers, constitutive laws, applications of transformers, open and short circuit tests, autotransformers.6) Renewable energy systems (8 hours)Economic aspects of electricity transmission. Production, transmission and utilization of the electrical energy. Classification of energy distribution networks. Renewable energy sources. Safety and electrical hazard. Brief introduction to the safety control of electrical systems.
I.D. Giulio Fabbricatore, " Elettrotecnica e applicazioni. Reti, macchine, misure, impianti"
Leon Freris, David Infield, Renewable Energy in Power Systems, Wiley
C. K. Alexander, M. N. O. Sadiku, ”Fundamentals of Electric Circuits”, McGraw-Hill. Filippo Ciampolini, "Elettrotecnica generale" Franz J. Monssen, "Laboratorio di circuiti elettrici con OrCAD PSpice" La Fisica di Feynman volume 2 elettromagnetismo Ed. Zanichelli. Olivieri Ravelli ELETTROTECNICA per Elettrotecnica e automazione Ed. CEDAM Scuola Giorgio Rizzoni Elettrotecnica - Principi ed applicazioni 2/ed McGraw-Hill
The course is based on classroom lectures. The resolution of the exercises is done by analytical methods. Pspice will be used for the analysis of electrical circuits.Teaching material, to support lessons, will be uploaded to the Elly platform at the end of the lessons.The slides used in class will be considered an integral part of the teaching material.We remind students not attending, to check the teaching material available and the indications provided by the teacher through the Elly platform.
Assessment methods and criteria
The exam is based on written examination
The written examination includes:
a) 2 exercises on the analysis of electrical circuits (maximum score 8 points each). Approximately 1 exercise will focus on the analysis of DC circuits and 1 on the analysis of AC circuits
b) 2 open-answer theory questions (maximum score 8 points each) on the topics covered in the course.All the topics covered in the course can be demanded, but the questions will focus in particular on subjetcs that are not proved (or not exhaustively proved) by the electric circuit exercises