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Electric Drive Systems

Code:

LACI32026

Sigla:

SAE

Áreas Científicas
Classificação	Área Científica
OFICIAL	Electric Power Systems

Ocorrência: 2022/2023 - 2S

Ativa?	Yes
Unidade Responsável:	Departamento de Engenharia Eletrotécnica
Curso/CE Responsável:

Ciclos de Estudo/Cursos

Sigla	Nº de Estudantes	Plano de Estudos	Anos Curriculares	Créditos UCN	Créditos ECTS	Horas de Contacto	Horas Totais
EACI	21	Plano de Estudos 14	3	-	6	75	162

Língua de trabalho

Portuguese
Obs.: Português

Objetivos

Provide students with the basic principles of operation of the main electrical machines used in an industrial environment, as well as applications of special electrical machines;

Knowledge of power semiconductors;

Study of the operation of different types of electronic power converters, used in the control of electrical machines;

Study of different control methods of variable speed electromechanical drives.

Resultados de aprendizagem e competências

At the end of the UC the student should be able to:

1-Understand/explain the constitution and respective operating principle of electrical machines:
Direct Current Machine;
Three Phase Asynchronous Machine;
2-Understand and apply the mathematical models of electrical machines in steady state;
3-Analyze the different operating points and electromechanical and mechanical characteristics;
4-Analyze the energy balance and efficiency of electrical machines.
5. Identify the various power semiconductors and know their different characteristics;
6-Understand/explain the constitution and respective operating principle of power electronics convertres:
- AC/DC converters;
- AC/AC converters;
- DC/DC converters;
- DC/AC converters;

Modo de trabalho

Presencial

Programa

1 - Electric machines

- DC machine: constitution and operating characteristics. Equivalent circuit motors. Efficiency. Connection types (series, shunt and separately excited).  Electromechanical and mechanical characteristics. Starting methods, speed ​​regulation and electric braking;

- Asynchronous three-phase machine: constitution and operating characteristics. Equivalent circuit motors. Efficiency. Connection types (star and triangle).  Electromechanical and mechanical characteristics. Starting methods, speed ​​regulation and electric braking;

2- Power electronics converters

- AC/DC converters;
- AC/AC converters;
- DC/DC converters;
- DC/AC converters;

3- Electric drives control

Bibliografia Obrigatória

João Palma; Electrónica de Potência , ISEL
Jesus Fraile Mora; Máquinas Eléctricas, McGraw-Hill. ISBN: ISBN: 84-481-3913-5

Bibliografia Complementar

José Vagos Carreira Matias; Máquinas Eléctricas - corrente contínua, Didática
José Vagos Carreira Matias; Máquinas Eléctricas - corrente alternada, Didática Editora
Vincent del Toro; Fundamentos de Máquinas Elétricas, Prentice-Hall do Brasil, 1994. ISBN: 85-7054-053-1

Métodos de ensino e atividades de aprendizagem

The teaching of this course is divided into two kinds of classes: theoretical-practical and practical (laboratorial).

• Theoretica l- practical classes:

Exposition of theoretical subjects, performed with the combination of the expository method and the interpretive method, appealing to the students' participation. Solving application problems in which the active participation of students is promoted;

• Laboratory classes:

The participatory method is followed, although other active methods are also used, depending on the situation. Carrying out laboratory works with the support of specific guides.

Tipo de avaliação

Distributed evaluation with final exam

Componentes de Avaliação

Designation	Peso (%)
Exame	70,00
Trabalho laboratorial	30,00
Total:	100,00

Componentes de Ocupação

Designation	Tempo (Horas)
Frequência das aulas	45,00
Trabalho laboratorial	30,00
Total:	75,00

Obtenção de frequência

The final classification (NF) will be obtained as follows:

• Classification of laboratories (NL), calculated based on the performance of the laboartory work and respective reports, equal to or greater than 9.5 values;


• Classification of the final exam (NE) equal or to greater than 9,5 values;


• In case of continuous evaluation, the classification (NT) is obtained by the average of the tests with minimum grade is 8 values.

The final classification will be calculated by:

NF = 0.7 * NE + 0.3 * NL

or

NF = 0.7 * ((NT1 + NT2) / 2) + 0.3 * NL

Fórmula de cálculo da classificação final

The final classification will be calculated by:

NF = 0.7 * NE + 0.3 * NL

or

NF = 0.7 * ((NT1 + NT2) / 2) + 0.3 * NL