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Power Electronics

Code:

LTE31125

Sigla:

EP

Áreas Científicas
Classificação	Área Científica
OFICIAL	Electric Power Systems

Ocorrência: 2022/2023 - 1S

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
LTE	18	Plano de Estudos	3	-	6	75	162

Língua de trabalho

Portuguese

Objetivos

Identify and characterize the various power semiconductors. Study of operation of various types of electronic power converters. Study of the effects on the electric power grid (and loads) of the functioning of power electronic converters. Active, reactive, deformant and apparent power in the electric power system subject to non-sinusoidal alternating currents.

Resultados de aprendizagem e competências

At the end of the Curricular Unit the student should be able to:
1. Have an overview of the importance of this subject within a professional context.
2. Identify the various power semiconductors and be aware of their various characteristics..
3. Identify the different types of electronic power converters, and their practical applications.
4. Know the effects of some of these converters on the electrical grid
5. Understand the operation of electronic power converters that allow conversions of the AC/DC, AC/AC, DC/DC and AC/AC types.

Modo de trabalho

Presencial

Programa

Introduction to Power Electronics
  - Preamble; need; application examples
Power Electronic Devices
  - Power diode
  - Thyristor
  - Power Bipolar Transistor
  - Gate Turn-off Thyristor
  - Power MOSFET
  - Insulated Gate Bipolar Transistor
  - Comparison the Characteristics of Devices
AC/DC converters
  -Analysis of various topologies: controlled, semi-controlled, not controlled;
bridge; half-bridge, single-phase, three-phase
  - Powers
  -Applications
AC/AC Converters
  -Cicloconverters: Topology and operating principle
   > on-off control
   > phase control
  -Applications
DC/DC Converters
  -Analysis of various topologies: one quadrant, two quadrant and fourth quadrant
  -Applications

Bibliografia Obrigatória

Victor Pires; Documentação de apoio à Unidade Curricular (disponível no moodle)

Bibliografia Complementar

M.H.Rashid ; Power Electronics Circuits, Devices and Applications , Prentice Hall
Ned Mohan; Tore Undeland; William Robbins;; Power Electronics: Converters, Applications and Design, John Wiley & Sons
Daniel W. Hart ; Introduction to Power Electronics, Prentice Hall

Métodos de ensino e atividades de aprendizagem

Teaching Methodology:
a) Lectures: Interactive exhibition and demonstration method;
b) Practical Classes: Solving problems with relevant interest
c) Laboratory Classes: experimental method applied to the development of circuits and systems based on the knowledge acquired in the theoretical and practical lessons.

Tipo de avaliação

Distributed evaluation without final exam

Componentes de Avaliação

Designation	Peso (%)
Teste	65,00
Trabalho laboratorial	35,00
Total:	100,00

Componentes de Ocupação

Designation	Tempo (Horas)
Estudo autónomo	75,00
Frequência das aulas	45,00
Trabalho laboratorial	42,00
Total:	162,00

Obtenção de frequência

Carrying out laboratory work (L)

The lab grade is assigned based on the analysis and discussion of the reports and in the performance demonstrated by each student in the laboratory classroom.

Minimum grade for this component: 9.5 values

Conducting tests (T) or exam (E).

Four tests are performed.
Minimum grade in the test average: 9.5 values

Fórmula de cálculo da classificação final

Conditions of approval:

Final Rating = 0.65 * T + 0.35 * L

or

Final Rating = 0.65 * E + 0.35 * L