101131 - ELECTRICAL SYSTEMS

Subject type: Mandatory

Coordinator: Julián Horrillo Tello

Trimester: Third term

Credits: 6

L'idioma d'impartició és el català, però no es descarta fer ús també de textos en anglès i en castellà. L'estudiant podrà fer ús en tot moment del català, anglès o castellà indistintament.

The purpose of the subject Electrical Systems is the training of students in the Degree in Engineering in Industrial and Automatic Electronics, and the Degree in Mechanical Engineering so that they are able to understand, interpret and perform fundamental calculations in the field of the theory of circuits and electrical machines. This subject provides the essential basis to support future subjects of electricity and electronics in the career.

At the end of the course, the student is able to:

1. Assign, relate and explain the electrical quantities in any electrical circuit.

2. Solve resistive circuits in direct current regime.

3. Solve first and second order transient circuits.

4. Solve circuits in permanent sinusoidal regime.

5. Represent graphically (Bode) the frequency response of transfer functions.

6. Explain, use and make measurements in direct current systems, in systems with transients and in alternating, single-phase and three-phase systems.

7. Recognize, explain the basic concepts of operation and connect the basic electrical machines.

8. Use laboratory, feeding and measuring devices.

9. Use computer software aimed at calculating circuits.

The course consists of 6 hours per week, 4 of which are with large group and 2 hours are with small group.

In the large group classes in the classroom the theoretical subject will be developed, alternating the exposition of theoretical concepts and the resolution of exercises.

Small group classes correspond to laboratory practices or exercise resolution.

In the laboratory, students will work in groups of 1 to 3 people, according to the teacher's discretion.

Students will have documentation to follow the course: notes, solved exercises and practice script.

Students will have to dedicate additional non-contact time to the study, resolution of exercises, previous works and reports of the practices, as well as to the preparation of the written tests.

Activities in laboratory practice

1: CIRCUIT IN DIRECT CURRENT (Activity 3)

2: FIRST-ORDER TRANSIENTS (Activity 4)

3: SECOND-ORDER TRANSIENTS (Activity 5)

4: SINGLE-PHASE ALTERNATING CURRENT CIRCUIT (Activity 6)

5: THREE-PHASE SYSTEMS. TRANSFORMER (Activity 7)

6: ASYNCHRONOUS MOTOR (Activity 8)

7: FREQUENCY RESPONSE (Activity 9)

8: SIMULATION OF CIRCUITS IN PSPICE (Activity 10)

Activity 11: Practice exam. During the final exam, there will also be a written practice exam that will count for 30% of the practice grade. 

Rules for carrying out the activities

All the information on the activities to be carried out will be published on the campus.

Completion of laboratory practices is mandatory. Each of the laboratory practices will need a report (done individually), which will be delivered to MOODLE in the term that is determined and announced for each practice.

Deliveries will not be accepted outside the established deadlines, except in cases of force majeure.

For each activity, you will be informed of the regulations to be followed and of the particular conditions that govern them, in sufficient advance.

In the written tests, a form will be provided. The student must bring utensils to write on paper and a calculator. The use of mobile phones and computers is not permitted, except in the event that the contrary is explicitly determined.

It is mandatory to carry out all the activities of the subject.

The final grade of the ordinary assessment will be the weighted average of the grades of the assessable activities:

• Theory grade: 70% of the subject
  • Activity 1: First partial test 40% of the theory mark
  • Activity 2: Final test (all course material) 70% of the theory grade (or 100% of the theory grade if it exceeds the weighted average grade of Theory)

• Practice grade: 30% of the subject
  •  Activities from 3 to 11: Laboratory practices (the laboratory exam will count for 30% of the practice grade). All practices (activities from 3 to 10) have the same value. 

Before the internship, a small 15-minute preliminary test consisting of questions based on the previous internship can be taken. This test will be taken into account in the evaluation of the internship grade.

The first partial test can be recovered with the final test, so that it will not be taken into account, in case it has not been approved. If the weighted theory grade is worse than the final grade, only the final grade will be taken into account. 

For all students who have not passed the subject in the ordinary assessment, there will be a make-up exam. This recovery exam will be for the whole subject, parts will not be examined separately. The grade of this recovery will average (70%) with the practices (30%). If the resulting average grade is higher than 5,0, the final grade will be limited to 5,0.

Marcos Faúndez Zanuy, Practices of Electrical Systems. 2020. pdf available on e-campus

Alexander Charles, Sadiku Matthew, Fundamentals of electric circuits, 7th edition, McGraw Hill (C) 2021

Safont Sisa, Robert. Notes and Exercises of Electrical Systems. 2013. Available on e-campus

William H. Hayt, J E. Kemmerly, Jamie Phillips, Steven M. Durbin, Analysis of circuits in engineering. 9th ed.. McGraw-Hill, 2019. ISBN 9781456272135.

Rabbit, Antonio. Electrical circuits for engineering. 1ª ed .. Madrid: McGraw-Hill, 2004. ISBN 8448141792.

Svodoba James, Dorf Richard Introduction to electric circuits 9th edition. Wiley 2014

Quintáns Graña, Camilo "Simulation of electronic circuits with ORCAD PSPICE. 2nd Edition Editorial Marcombo 2022