


Politecnico di Torino  
Academic Year 2017/18  
01AULLX Electrical circuits and Network Analysis 

1st degree and Bachelorlevel of the Bologna process in Electrical Engineering  Torino 





Subject fundamentals
Course objectives
 provide the basis of the circuit method for the solution of electromagnetic problems and of network theory  develop operative skills for the analytical and automatic solution of electrical circuits 
Expected learning outcomes
Skills in the analytical solution of an electrical network in deifferent operating conditions
Use of different tools for the automatic analysis of circuits 
Prerequisites / Assumed knowledge
The course will develop its own concepts for circuit analysis, anyway a basic knowledge of the following topics, acquired in basic courses, is needed:
Basics of calculus derivation/integration Ordinary Differential Equations Complex numbers Basics of Maxwell equations 
Contents
1. Circuit analysis of electromagnetic phenomena: lumped parameter model of physical phenomena, dipoles and electrical quantities: voltage, current and power, units and measurement instruments, circuit topology, Kirchhoff laws, fundamental hypothesis of circuit model (3 hours)
2. Components: constitutive equations of the ideal resistor, resistance computation, ideal capacitor, ideal inductor and coupled inductors, voltage and current sources, open and short circuits, series and parallel connections, voltage and current divider, wyedelta formulas, non ideal components (6 hours) 3. Methods for the solution of DC circuits: algebraic method, network theorems, superposition theorem, Thevenin and Norton equivalent circuits, maximum power transfer for linear and nonlinear components, Tellegen theorem (10.5 hours) 4. Time dynamics of circuits:state variables, time analysis in RC and RL first order circuits, transient and steady state concepts in linear circuits (4.5 hours) 5. Sinusoidal analysis of circuits: complex number phasor representation, Kirchhoff laws in the frequency domain, dipole impedance and admittance. Power in sinusoidal steady state: active and reactive power, complex power. Boucherot theorem, power factor correction (12 hours) 6. Threephase circuits: definitions, threephase sources and loads, wye and delta connections, solution methods for symmetrical and balanced circuits, power in threephase system. Unbalanced threephase circuits: neutral wire (6 hours) 7. Automatic analysis of circuits: graphs description of circuits, tree and cotree, fundamental theorem of graphs, nodal and mesh analysis methods, computer solution of circuits, ODE solution (12 hours) 8. Frequency response: definitions, transfer function, Bode diagrams and decibel, first order filters, resonance and second order filters (7.5 hours) 9. Twoport networks: circuit representations, impedance and admittance matrices, hybrid representations, transmission parameters (6 hours) 
Delivery modes
Besides classroom activity with theory and exercise, informatics and technological lab exercises are foreseen:
Classroom exercise (15 hours) Technology lab a. resistive circuitis (3 hours) b. time analysis of circuits: RC and RL charge and discharge (3 hours) c. sinusoidal steady state analysis, power factor correction, threephase circuits (3 hours) Informatic lab a. computer analysis of DC and AC circuits (3 hours) b. time domain analysis, second order circuits (3 hours) c. circuits with nonlinear elements (3 hours) 
Texts, readings, handouts and other learning resources
M. Repetto, S. Leva, Elettrotecnica, Elementi di teoria ed esercizi, Città Studi Edizioni, Torino, Italia (2014)
A. Canova, G. Gruosso, M. Repetto, Elettrotecnica esercizi svolti, Societa’ Editrice Esculapio. Bologna, Italia (2010) Slide del corso disponibili su portale della didattica Materiale didattico su programma PSpice disponibile su portale della didattica Reference text books C.A. Desoer, E.S. Kuh, Fondamenti di teoria dei circuiti, Franco Angeli editore, MIlano C.K. Alexander, M.N.O. Sadiku, Fundamentals of Electric Circuits, The McGrawHill Companies Inc. P.P. Civalleri, Elettrotecnica, Levrotto&Bella 
Assessment and grading criteria
The exam is made up of two part: written and oral examination, both of them are compulsory.
The written exam is made up of four exercises broke down in some questions. In exercise evaluation methodological aspects are evaluated first. Oral exam can be accessed overcoming a threshold. Oral examination regards the theory topics and the activity carried out in the labs. A part of the final exam score is reserved for lab activity. 
