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Fundamentals of Energy Conversion in Electrical Machines

Code:

REID14

Sigla:

FCEME

Áreas Científicas
Classificação	Área Científica
CNAEF	Electricity and energy

Ocorrência: 2021/2022 - 1S

Ativa?	Yes
Unidade Responsável:	Departamento de Engenharia Eletrotécnica
Curso/CE Responsável:	Professional Technical Higher Education Courses in Smart Grids and Home Automation

Ciclos de Estudo/Cursos

Sigla	Nº de Estudantes	Plano de Estudos	Anos Curriculares	Créditos UCN	Créditos ECTS	Horas de Contacto	Horas Totais
REID	4	Plano de Estudos 2018/19	2	-	6	60	162

Língua de trabalho

Portuguese
Obs.: Português

Objetivos

This curricular

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:
Power transformer;
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.

Modo de trabalho

Presencial

Programa

1. Power Transformers

Construction aspects and operating principle. Fundamental laws and rules.

Single-phase power transformers types and their applications.

Ideal and real single-phase power transformer. Equivalent electric circuit.

Single-phase power transformer tests: no-load and short-circuit tests.

Transformer energy balance and efficiency.

Three-phase power transformer and their applications.

 

1. Direct Current Motors

Constitution and working principle of the direct current motor.

Types of excitation circuit connections in direct current motors and their applications. Equivalent eletric circuits.

Energy balance and efficiency of the direct current motors .

Electromechanical and mechanical characteristics of direct current motors.

Starting methods and speed regulation of direct current motors.

 

1. Three-Phase Asynchronous Motors

Constitution and operating principle. Fundamental laws and rules.

Equivalent electric scheme and fundamental equations.

Star and delta connections, relationship between effective voltages and currents.

Energy diagram of the asynchronous motor and efficiency.

Electromechanical and mechanical characteristics of three-phase asynchronous motor.

Starting methods and speed regulation of three-phase asynchronous motors.

Types of three-phase and single-phase asynchronous machines and their applications.

Bibliografia Obrigatória

A. E. Fitzgerald; D. C. Kingsley; Alexander Kusko; Máquinas Eléctricas, McGraw Hill, 1975. ISBN: ISBN: 0-07-090132-5
Jesus Fraile Mora; Máquinas Eléctricas, McGraw-Hill, 2003. ISBN: ISBN: 84-481-3913-5

Bibliografia Complementar

Irving Kosow; Máquinas Eléctricas e Transformadores, Editora Globo, 1989. ISBN: ISBN: 85-250-0230-5
Vincent del Toro; Fundamentos de Máquinas Elétricas, Prentice-Hall do Brasil, 1994. ISBN: ISBN: 85-7054-053-1
Stephen J. Chapman; Electric Machinery Fundamentals, McGraw-Hill, 1991. ISBN: ISBN: 0-07-100972-8
José Vagos Carreira Matias; Máquinas Eléctricas - corrente alternada, Didáctica Editora
José Vagos Carreira Matias; Máquinas Eléctricas - corrente contínua, Didáctica Editora
Jesus Fraile Mora; Máquinas Eléctricas, McGraw-Hill, 2003. ISBN: ISBN: 84-481-3913-5

Métodos de ensino e atividades de aprendizagem

Teaching Methodology:
a) Lectures and Practical Classes:  Interactive exhibition and demonstration method with solving problems
b) Laboratory Classes: experimental method applied to the development of circuits and systems based on the knowledge acquired in the theoretical and pratical.

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	30,00
Trabalho laboratorial	30,00
Total:	60,00

Obtenção de frequência

Fórmula de cálculo da classificação final

Conditions of approval:

NF=0.7*((NMT1+NMT2+NMT3)/3)+0.3*NL
or
NF=0.7*NE+0.3*NL