


Politecnico di Torino  
Academic Year 2012/13  
04CIIPL, 04CIIPI Industrial electric systems 

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





Subject fundamentals
The goal of this course is to provide the student with the basics of circuit theory and electrical applications in industrial settings. The first part of the course develops the basics of electrical circuit analysis. The second part begins with some outlines of electrical machines and transformers. Afterwards, it deals with production, transmission and distribution of electric energy, focusing then on lowvoltage electrical systems, their design and their normative and economic aspects.

Expected learning outcomes
Solving simple DC and AC circuits. Solving simple symmetrical and balanced threephase systems. Basic knowledge of circuit topology, DC and AC systems, power factor correction, line losses and voltage drop. Design of a simple lowvoltage distribution system. Basic knowledge of electrical safety. Basic knowledge of the economic aspects of electric energy.

Prerequisites / Assumed knowledge
Basic knowledge of algebra, geometry, mathematical analysis. Arithmetic of complex numbers. Basics of electromagnetism.

Contents
Definitions of key electrical quantities. Direct current (DC). Sign conventions. Kirchhoff’s laws. Series and parallel circuits. Thévenin’s theorem. Millman’s theorem. Superposition theorem. Power in DC circuits.
Variable behavior. Energy in electric and magnetic fields. Alternating current (AC). Frequency and phase angle of sinusoidal waveforms. AC steadystate. Phasor diagram and complex numbers for AC circuit analysis. Impedance and admittance. Active and reactive power. Power triangle. Boucherot’s theorem. Power factor correction. AC circuits analysis. Threephase systems. Wye and delta connection. Balanced and unbalanced systems. Threephase power. Power measurement. Basics of electrical machines. Ideal transformer. Magnetization and load losses. Equivalent circuit. Threephase transformers. Outline of AC rotating machines. Modern electrical power systems: generation, transmission, distribution and utilization. Renewable energy sources. Power plants. Transmission grid. Distribution networks. Neutral grounding. Electric faults. Overcurrent protection. Circuit breakers. Thermal, magnetic and residual current devices. Electric cables. Design of electrical distribution systems. Basics of electrical safety. Electrical hazards. Earthing systems. TT, TN and IT earthing systems. Preventing electrical contacts. Use of differential relay. Electric cabins. Power factor correction methods in distribution systems. Electricity rates. 
Delivery modes
Lectures. Exercises on the topics covered in the lectures. Laboratory experiences.

Texts, readings, handouts and other learning resources
 F. Piglione, G. Chicco, Sistemi Elettrici Industriali (I and II part), Politeko, Torino
 G. Conte, Impianti elettrici, Hoepli, Milano  V. Cataliotti, Impianti elettrici, Vol. III, Flaccovio, Palermo.  references available at the website www.elektro.it 
Assessment and grading criteria
Closedbook written test, composed by numerical problems and theory questions. The grade of the written test is the final grade of the exam. An optional oral test is available for those that obtain at least 26/30 in the written test.

