- Docente: Massimo Fabbri
- Credits: 6
- SSD: ING-IND/31
- Language: Italian
- Teaching Mode: In-person learning (entirely or partially)
- Campus: Bologna
- Corso: First cycle degree programme (L) in Mechanical Engineering (cod. 0927)
Learning outcomes
The main goal of this course is to provide the student with the fundamentals of Electrical Engineering. The basic concept and methodology in the field of stationary and slow varying electromagnetism will be discussed. Subjects concerning circuit analysis in D.C. and A.C. regime will be treated in detail. The basic theory for electromechanical devices will be discussed. The basics theory of electric power systems will be treated.
Course contents
Circuit Theory: Kirchhoff's Laws. Circuit Elements and their characteristics, resistor, capacitor, inductor, dependent and independent voltage and current sources, ideal transformer. Graph of a circuit, tree and co-tree, sets of fundamental cuts and fundamental loops. DC regime. Circuit Analysis Methods. Main theorems on linear network. Transient analysis. AC regime: Stainmetz transform, AC circuit analysis methods, AC power. Three-Phase Systems.
Electromagnetism: Fundamental definitions. Maxwell equations in local and integral form. From fields theory to circuit theory. Energy balance, force and torque calculation, Electromechanical energy conversion principles.
Electric Machines: Magnetic circuits. Power losses in electric machines. Transformer. Basic principle. Internal and external equations. Equivalent circuits. Open circuit and short circuit test, efficiency measurements. Three-Phase transformer. Rotating field theory. Induction machine. Basic principle. Internal and external equations. Equivalence theorem for asynchronous machines. Equivalent circuit. Torque-speed and current-speed characteristics. Synchronous-speed machine. Basic principle. Internal and external equations. D.C. machines. Basic principle. Internal and external equations.
Electric Power Systems: Generation and transmission. Energy sources. Safety basic concepts.
Readings/Bibliography
G. Rizzoni, “Principles and applications of electrical engineering”, McGrow-Hill, 2015.
Teaching methods
During the lessons the arguments shown in the program of the course are developed. The course contains class exercises.
Assessment methods
The exam consists in a written and oral test. Written texts regard exercises on DC circuits, AC circuits, three phase systems. Students must score sufficient or more on the written test in order to advance to the oral exam.
Links to further information
http://www.die.ing.unibo.it/pers/fabbri/MEC/index.htm
Office hours
See the website of Massimo Fabbri