Electric Machines Fundamentals

Code:

L.EEC023

Acronym:

FME

Keywords
Classification	Keyword
OFICIAL	Power

Instance: 2021/2022 - 2S

Active?	Yes
Responsible unit:	Department of Electrical and Computer Engineering
Course/CS Responsible:	Bachelor in Electrical and Computer Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L.EEC	264	Syllabus	2	-	6	52	162
M.EEC	65	Syllabus	1	-	6	52	162

Teaching language

Portuguese

Objectives

This course aims to provide the student with the essential knowledge about electrical machines and applied
electromagnetism. Thus, it is intended that the student:
● Acquire technical knowledge on classification, constitution and physical phenomena that participate
in the operation of electrical machines in general (static and rotating).
● Know and understand the general rules for the selection, installation, rational use and maintenance
of electrical machines (static and rotating).
● Be able to formulate, analyse and solve basic problems related to the operation of electric machines
(static and rotating)

Learning outcomes and competences

The learning objectives of the curricular unit will be achieved through, firstly, the periods of direct contact
with the student corresponding to theoretical sessions dedicated to the explanation of the central themes of
the curricular contents and their debate, and to theoretical-practical sessions devoted to the analysis and
resolution of various concrete cases of exploitation. The use of laboratory demonstrations is not excluded at
the outset.
In addition, the student's individual work will be induced through non-present work proposals that will be
accompanied in specific periods of office attendance. Study materials and bibliographic sources will be
provided for each theme. Ethical and deontological behaviors will be encouraged at the individual and
collective responsibility levels.

Working method

Presencial

Program

Electrical machines (EM) definition, classification and fields of application.
Common aspects of EM:
1. Quantities, rated values and load factors.
2. Electrical phenomena: conductors and insulators; DC and AC windings in EM; harmonic effects.
3. Electromagnetic phenomena: electromagnetism basic relations; magnetic cores; production, types
and effects of magnetic fields.
4. Mechanical phenomena: torque and power curves; mechanical balance and working point; inertia
and acceleration; transmission systems.
5. Thermal phenomena: quantities and eating law; EM refrigeration systems; thermal classes.
6. Losses and efficiencies (power and energy); EM efficiency classes.
Constructive aspects, theory and performance characteristics of:
1. 2-winding transformers.
2. DC and AC motors (induction and synchronous types).
3. AC generators (synchronous and induction types).
Installation and maintenance rules. EM standardisation

Mandatory literature

Stephen J. Chapman; Fundamentos de Maquinas Eletricas, Mc Graw Hill; Engenharia edition (January 1, 2013), , 2013. ISBN: ISBN: 978-8580552065
Stephen J. Chapman; Electric machinery fundamentals. ISBN: 007-115155-9
Jesús Fraile Mora; Máquinas eléctricas. ISBN: 84-481-3913-5
George McPherson; An introduction to electrical machines and transformers. ISBN: 0-471-05586-7
Carlos de Castro Carvalho; Transformadores
Guilherme de Almeida; Sistema Internacional de Unidades (SI). ISBN: 972-707-162-7

Complementary Bibliography

Stephen D. Umans; Máquinas elétricas de Fitzgerald e Kingsley, AMGH EDITORA LTDA, 2014. ISBN: 978-85-8055-374-1

Teaching methods and learning activities

The teaching strategies adopted in this course aim to progressively lead the student from basic theoretical
knowledge to its practical application through numerical exercises.
Students are encouraged to engage in individual and collective work that reinforces their learning and
exchange of experiences. Beyond the face-to-face sessions, this effort goes beyond them with occasional
homework, preparation proposals. However, the student is supported in this task through office and remote
support.
The proposed evaluation methodology also tries to reinforce the perspective of continuous learning and
corresponding work.

Software

PSIM, MATLAB

Evaluation Type

Distributed evaluation without final exam

Assessment Components

Designation	Weight (%)
Participação presencial	5,00
Exame	75,00
Trabalho laboratorial	20,00
Total:	100,00

Amount of time allocated to each course unit

Designation	Time (hours)
Estudo autónomo	96,00
Frequência das aulas	52,00
Trabalho escrito	14,00
Total:	162,00

Eligibility for exams

Grading
Calculation formula of final grade.
Final Mark will be based on the following formula:
0.3*E1+0.3*E2+0.3*E3+0.1*HW
All components of the course will be assessed in a scale of 0 out of 20
E1, E2, E3: Exam.
HW: Homework.
The minimum final grade must be 10. 
The minimum grade for the average of MT1, MT2 and MT3 must be 10.

Calculation formula of final grade

Grading
Calculation formula of final grade. Final Mark will be based on the following formula:
FG=0,25xMT1+0,25xMT2+0,25xMT3+0,05xHW+0,1xREP1+0,1xREP2
MT1, MT2, MT3 Tests.
HW: Homework.
REP1, REP2 Reports.

All components are classified on a scale from 0 to 20 values.

In case of justified absence from any of the assessment components, Mini-Test or Laboratory Work, that assessment element will be redistributed to the remaining elements.

TPC rankings will be released no later than 15 days after the end date.

Examinations or Special Assignments

Not aplicable

Internship work/project

Not aplicable

Special assessment (TE, DA, ...)

The special evaluation follows the rules described for the normal evaluation

Classification improvement

The exams for recourse and improvement of the classification cover the whole program.
For the calculation of the final grade, in these exams, the grade obtained in the homework  and Labs is maintained.