29653 - Industrial Electrotechnics T

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. Electric Power Systems: Generation and transmission. Safety basic concepts.

Electromagnetism: definitions and Maxwell equations in integral form. From fields theory to circuit theory. 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. Equivalent circuits. Torque-speed and current-speed characteristics.

 

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

There are six sessions during the academic year: two in January / February, three in June / July and one in September. The date, time and place of the written tests are indicated on the Almaesami site (https://almaesami.unibo.it/almaesami/welcome.htm). Registration is compulsory. The lists on Almaesami open about a month before and close two days before the beginning of each session.

Each written test lasts 60 minutes and consists of a theory question and one exercise. A protocol sheet and test text will be distributed, on which the student will be asked to give Last Name, Name and University Number. At the end of time, the text (with the results obtained and the answer to the theory question) and the sheet (with an understandable development of the exercise) will have to be returned. The exercise may refer to: DC Circuitry, Transient Circuitry, AC Circuits, Three-Phase Systems. The theory question will exclusively concern the subjects covered in the program. The use of any teaching aids is forbidden during the tests; The use of a calculator is recommended. The theory question and the exercise are worth fifteen points each. A minimum of five points in each of them must be obtained. The evaluation of the tests will be carried out on the basis of the correctness of the results and the procedures for the solution of the exercise and the relevance and completeness of the answer to the question.

The results of the written tests will be indicated on the Almaesami site on a date that will be communicated during the written test. The results will be fixed a week after the publication on the Almaesami website, except for exceptions (those who want to repeat the test must immediately notify the teacher by e-mail). Each result obtained remains valid for one year, unless it is replaced by a subsequent result.

Teaching tools

The texts (with solutions) of the previous test sessions are available at http://www.die.ing.unibo.it/pers/fabbri/MEC/index.htm.

Links to further information

http://www.die.ing.unibo.it/pers/fabbri/MEC/index.htm

Office hours

See the website of Massimo Fabbri