Base Knowledge
Electroconductive materials, especially metal, and insulators. Basic notions of physics and mathematics.
Teaching Methodologies
The subjects are essentially exposed in theoretical lessons, complemented by the presentation, at theoretical-practical lessons, of electrical applicative models and systems.
In the theoretical-practical lessons, exercises are solved and assemblies of electrical schemes and instrumentation for electrical quantities measurement are presented.
Learning Results
The main objective of this course unit is to acquire knowledge in terms of the main electrical parameters and their measurement, so that students can understand the technical language, interpret the technical data of electrical equipment, make the connection between electrical power and electromechanical devices, analyze electrical circuits and know how to use instrumentation to measure electrical parameters.
Program
Introduction and definitions.
Direct current.
Association of sources and receivers. Main analysis circuits laws and theorems. Series, parallel and both configuration circuits.
Alternative current.
Alternating current effects. Sinusoidal single-phase alternative current. Mean and root mean square electric values. Mathematical and vectorial representation. Circuits R, L, C. Reactance and Impedance. Circuits RL, RC, RLC series and parallel. Resonance. True, reactive and total electric power. Power factor compensation.
Three-phase systems.
Simple and composed voltages. Wye and delta connections. Three phase currents. Three-phase Powers. Power factor compensation.
Electric motors.
Motors classification. Main characteristics and field of application of the several types of motors. Outburst types. Direct and pull wye-delta outburst.
Bases of Project of electrical distribution systems.
Electric cables. Command, regulative and protective devices.
Curricular Unit Teachers
Internship(s)
NAO
Bibliography
Recommended bibliography
Textos de apoio de Eletrotecnia_PT (disponível na Secção de Textos do ISEC).
Carvalho, A. (2022). Electrotecnia – Diapositivos_PT . ISEC (available in the academic platform InforEstudante).
Carvalho, A. (2022). Electronics Theoretical-practical exercises_EN. ISEC (available in the academic platform InforEstudante).
Complementary bibliography
Rizzoni, G. (2000). Principles and Applications of Electrical Engineering. McGraw-Hill. ISBN 0-07-118452-X. (available in ISEC library: 1-3-24)
Bessonov (1977). Electricidade Aplicada para Engenheiros (2ªed). Lisboa: Lopes da Silva. (available in ISEC library: 1-3-211)
Gussow, M. (1985). Electricidade Básica. Schaum McGraw-Hil. ISBN 0-07-450182-8
Kuphaldt, T.R. (2006). Lessons In Electric Circuits, Volume I – DC. 5th Edition.
Kuphaldt, , T.R. (2007). Lessons In Electric Circuits, Volume II – AC. 6th Edition.