Code: | EEC0073 | Acronym: | MELE |
Keywords | |
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Classification | Keyword |
OFICIAL | Power |
Active? | Yes |
Responsible unit: | Department of Electrical and Computer Engineering |
Course/CS Responsible: | Master in Electrical and Computers Engineering |
Acronym | No. of Students | Study Plan | Curricular Years | Credits UCN | Credits ECTS | Contact hours | Total Time |
---|---|---|---|---|---|---|---|
MIEEC | 122 | Syllabus | 3 | - | 6 | 56 | 162 |
This course unit aims to endow students with fundamental knowledge in electric machines, especially in electric transformers and induction motors. Crosscutting aspects are discussed and key references are made about other machines.
Special emphasis will be given to the classification, characteristics of construction, functioning principles, modelling and functioning characteristics in stationary state, testing and general rules of selection, installation, use and maintenance of transformers as induction motors, as autonomous systems and as elements of more complex systems.
To complete this course unit, students have to:
1. acquire technical knowledge in the classification, composition and phenomena which are part of the functioning of electric machines. Electric transformers and induction motors: general rules of selection, installation, use and maintenance. Students should be capable of applying their knowledge in the formulation, resolution and discussion of problems related to the above mentioned themes and its insertion in electrical energy systems (CDIO Syllabus 1.2 and 2.1). Students will have the chance to get familiar with these themes in classes (theoretical sessions dedicated to the presentation and discussion of the main themes of the course unit; theoretical-practical sessions dedicated to the analysis and resolution of theoretical-practical problems). It will take place tests to assess these skills.
2. acquire knowledge in electric machine testing and experimental research about the functioning of transforms and induction motors, by doing laboratory assignments (CDIO Syllabus 2.2). These skills will be assessed by supervising students’ laboratory assignments and by the evaluation of the respective reports.
3. develop professional skills and attitudes, both at an personal level (autonomous study and preparation of work) and group level (participation in group assignments during theoretical-practical and laboratory assignments). Students will be asked to have an active attitude towards professors and colleagues, regarding research of information, planning, preparing and carrying out an assignment (laboratory tests or resolution of theoretical-practical problems), as well as having a correct attitude in the laboratory, by respecting safety standards, and rules of using equipment and testing procedures (CDIO Syllabus 2.5). These skills will be assessed by supervising students during classes and tests.
4. show communication skills, both oral (answering to questions during classes) and written (reports) (CDIO Syllabus 3.2).
The program of the course includes the following matters:
Chapter 1 - FUNDAMENTALS OF ELECTRICAL MACHINERY
Fundamental aspects of the classification, construction and phenomena involved in the operation of electric machines, including general rules for their selection, installation, use and maintenance.
Chapter 2- ELECTRIC TRANSFORMERS Specific aspects of their constrution, theory and operating characteristics, modelling and testing of single phase electric transformers; general concepts about other transformers: three phase power transformers, transformers of number of phases, autotransformers, measurement and protection transformers.
Chapter 3 - INTRODUCTION TO ELECTRICAL ROTATING MACHINERY
Fundamental aspects related to the construction and operation of rotating electrical machines, production and exploitation of electromagnetic phenomena, general working principles. Fundamental concepts about energy efficiency of electromechanical systems.
Chapter 4 - MOTOR INDUCTION
Specific constructive aspects, theory and operating characteristics, modeling of single and three phase induction motors, starting, reversing the direction of rotation, braking and strategies for change and speed control of electrical drives based on that type of engine. Single phase inductiom motor, universal motor and shaded pole motor.
Classes: Theoretical classes: presentation of the themes of the course unit by the professor Theoretical-practical classes: resolution of theoretical-practical exercise by the professor and students Laboratory classes: development of an experimental assignment by groups of students (maximum of 3 students in each group) supervised by the professor and the laboratory technician. Outside of class: Besides regular study, students will be asked to write reports related with their laboratory assignments, which will be taken into account in the final grade. Students can schedule a meeting with the professors during office hours.
Designation | Weight (%) |
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Exame | 80,00 |
Trabalho laboratorial | 20,00 |
Total: | 100,00 |
Designation | Time (hours) |
---|---|
Estudo autónomo | 80,00 |
Frequência das aulas | 60,00 |
Total: | 140,00 |
Students cannot miss more classes than allowed by the rules (3 theoretical-practical/laboratory classes). Students have to reach a minimum grade of 50% in the continuous assessment component.
1- Final Exam (written; individual; 2,5 hours) = 80%
Students can opt to substitute this exam by two individual written tests. The first will cover chapter 1 and 2. The second will cover chapter 3 and 4 and it will take place during the normal season of exams. Each of these tests is worth 40% of the final grade and they will last 2 hours.
2- Continuous Assessment = 20%
Assessment of the laboratory assignments (preparation, carrying out the assignments and reports).
COMMENTS:
a) If students do not attend laboratory classes, and if they are not replaced, students will earn a ZERO in the assignment.b) Students will have a chance to repeat their exams at Second Season season by attending a new exam. This exam will cover all the themes of this course unit.
c) Continuous assessment obtained in the previous school year will be valid in the current school year if the student does not declare otherwise.
d) In the case of students with special needs, ensuring safety of people and equipment can justify the planned laboratory work is replaced by another with the same frequency assessment purposes, defined case by case by the teacher.
- 4 laboratory assignments by groups of students and supervised by the professor (laboratory of electrical machinery)
- 2 individual written tests instead of final exam (Regular Season), for students who choose well.
Students with a special status who did not attend this course in the previous year will be assessed in the following way:
Final Exam: 80%
Laboratory Exam (Oral): 20%
COMMENTS:
a) Laboratory exam is only mandatory for students which have a special status and did not do laboratory assignments. Laboratory exam will substitute the continuous assessment component.
b) These students can also opt to attend two tests instead of the final exam.
Students can improve their grades by attending a new exam. However, they can only improve the grade of the exam (80%), since the continuous assessment grade will remain the same. This exam will cover all the themes of this course unit.
Attendance of teachers to students:
Artur Fernandes Costa (Office. J107 - tel. 22508-1872 - acosta@fe.up.pt): Monday from 4.00 pm to 5.30 pm; Tuesday, from 4.00 pm to 5.30 pm
Carlos Araújo Sá (Office. J104 - tel. 22508-1664 - cas@fe.up.pt): Wednesday from 2.00 pm pm to 5.30 pm