Course aims:

Extended mathematical models and graphical representations for three-phase AC
Theory of fundamental electrical circuits in three-phase systems
Non-linearities in classical electrical circuits
Make the logical connection between phenomenon - mathematical model - graphical representations
Find the unknowns (complex / matrix type), respectively, equate the three-phase electrical circuits

Course Entry Requirements:

Basics of mathematical analysis. Basics of electrical circuits 1

Course contents:

Course 1 - AC circuits. Methods and mathematical representations. Course 2 - Circuit elements. Methods of systematic analysis of AC circuits. Course 3 - Phenomenology of three-phase circuits of electric current. Course 4 - Fundamental theorems of three-phase circuits Course 5 - Three-phase systems with symmetrical and asymmetric vectors. Phase diagrams Course 6 - Electricity production. Magnetic rotating field. The electric car. Course 7 - Electricity distribution. Consumer network balanced / unbalanced. Course 8 - Non-linear electrical circuits. Fundamental and superior harmonics Course 9 - AC circuits magnetically coupled. Nonlinearities and hysteresis. Course 10 - Equations of the ideal and real transformer. The transformer in the energy / communication technique Course 11 - Theorems and equivalence relations in electrical circuit theory. Circuit operators Course 12 - Equivalence theorems for serial and parallel connection of electrical components Course 13 - Equivalence theorems for star, triangle, complete polygon connections (Millmann, Vaschy, s.a.) Course 14 - Linear and non-linear circuits with energy accumulating elements

Teaching methods:

Technical presentation and meeting with experimental exemplification.

Learning outcomes:

C1.1 Operation description of electronic devices and circuits. Fundamental methods of measuring electrical quantities C1.2 Analysis of small / medium complexity electronic circuits and systems, in order to designing and measuring them. C1.3 Diagnosis / troubleshooting of electronic circuits, equipment and systems C1.4 Use of electronic tools and specific methods to characterize and evaluate the electronic circuits and systems performance

Learning outcomes verification and assessment criteria:

theoretical exams – 60%; experimental laboratory – 40%.

Recommended reading:

A.Tulbure &Co., Electroprobleme. Teorie si Aplicatii., Aeternitas, alba, 2015, 200.
D. Ioan,, Bazele electrotehnicii,, http://www.lmn.pub.ro/~daniel/, Buc, 2012, 300.
Mihai Iordache, - Chestiuni speciale de electrotehnica, UPBuc., Buc, 2018, 330.
P. V. Notingher, F.Ciuprina, L.M. Dumitran., Materiale pentru electrotehnica. Culegere de probleme, Universitatea Politehnica Bucuresti, Buc, 2010, a.
Ilie SUĂRĂŞAN, Electrotehnică şi Maşini Electrice pentru inginerie industrială, RISOPRINT, cluj-Napoca, 2013, b.