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Electrotechnics II

Code:

LEEC12108

Sigla:

ELETII

Áreas Científicas
Classificação	Área Científica
OFICIAL	Electric Power Systems

Ocorrência: 2022/2023 - 2S

Ativa?	Yes
Página Web:	https://moodle.ips.pt/2223/course/view.php?id=1896
Unidade Responsável:	Departamento de Engenharia Eletrotécnica
Curso/CE Responsável:	Electrical and Computer Engineering

Ciclos de Estudo/Cursos

Sigla	Nº de Estudantes	Plano de Estudos	Anos Curriculares	Créditos UCN	Créditos ECTS	Horas de Contacto	Horas Totais
EEC	64	Plano de Estudos	1	-	6	75	162

Língua de trabalho

Portuguese

Objetivos

This course aims to provide basic training in electromagnetism and alternating current electrical circuits, which is transversal to various specialties in Electrical and Computer Engineering. It also provides students with sufficient skills to formulate methodologies for analyzing alternating current circuits, solve operating equations in the time and frequency domains, determine the corresponding electric voltages and currents, and analyze three-phase systems. The theoretical-practical teaching is complemented by laboratory work.

Resultados de aprendizagem e competências

To know the fundamental laws that govern the magnetic field and analyze a magnetic circuit.
Understand the importance of sinusoidal alternating systems compared to continuous systems.
Represent sinusoidal alternating quantities in complex notation, necessary for circuit analysis.

Analyze RL and RC series circuits in AC.

Analyze RLC series circuits and RL//C circuits and interpret the phenomenon of resonance.

Operate with the concepts of complex, apparent, active and reactive power.

Calculate the powers involved in each circuit element.

Formulate and solve sinusoidal steady-state circuits using different methodologies and theorems.

Analyze three-phase circuits connected in star or delta and calculate their power.

Modo de trabalho

Presencial

Pré-requisitos (conhecimentos prévios) e co-requisitos (conhecimentos simultâneos)

System of Units. Electric Charge. Coulomb's Law. Electric Field. Potential. Work and Potential Energy. Capacitance and Capacitors. Association of Capacitors. Energy in a Capacitor. Dielectric Materials.

Electric Quantities. Electric Resistance. Ohm's Law. Joule Effect. Power and Energy. Active and Passive Elements. Conservation of Energy. Association of Resistances. Star-Delta and Delta-Star Conversions. Kirchhoff's Laws. Voltage and Current Dividers. Superposition Theorem. Nodal and Mesh Analysis. Thevenin's and Norton's Theorems. Millman's Theorem. Maximum Power Transfer. Power Balance.

Periodic Signals and Sinusoidal Signals - Main Concepts. Average Value and RMS Value. Symbolic Representation. Analysis of Resistive Circuits. Instantaneous Power and Average Power.

Programa

CHAPTER I - ELECTROSTATIC
Units System. Electric charge. Coulomb's Law. Electric field. Potential. Work and potential energy. Capacity and Capacitors. Association of capacitors. Energy store in a capacitor. Dielectric materials.

CHAPTER II - DIRECT CURRENT CIRCUITS
Electric quantities. Electrical resistance. Ohm's Law. Joule Effect. Power and energy. Active and passive elements. Energy conservation. Association of resistances. Star-triangle and triangle-star conversion. Kirchhoff's Laws. Voltage and current dividers. Overlap theorem. Nodal and mesh analysis. Thevenin and Norton theorems. Millman's Theorem. Maximum power transfer. Power balance.

CHAPTER III - ALTERNATING CURRENT CIRCUITS
Periodic signals and sinusoidal signals - main concepts. The average value and effective value. Symbolic representation. Analysis of resistive circuits. Instant power and average power.

Bibliografia Obrigatória

Docentes UC; Folhas teóricas de apoio às aulas teórico-práticas.
Docentes UC; Folhas com coleção de problemas de apoio às aulas teórico-práticas.
Docentes UC; Guias de apoio aos trabalhos laboratoriais.
Vitor Meireles ; Circuitos Eléctricos. ISBN: 9789727575862

Bibliografia Complementar

R. L. Boylestad; Introductory Circuit Analysis. ISBN: 9780133923919
L. Bessonov; Electricidade Aplicada Para Engenheiros. ISBN: 9726820219
William Hayt, Jack Kemmerly , Jamie Phillips , Steven Durbin ; Engineering Circuit Analysis. ISBN: 0073545511

Métodos de ensino e atividades de aprendizagem

Theoretical/practical classes:

• Presentation of theoretical subjects using a combination of expository and interpretive methods, encouraging student participation. Problem-solving exercises are used to promote active participation by the students.

Laboratory classes:

• A participatory method is followed, although other active methods are used depending on the situation. Eight laboratory assignments are completed with the support of specific guides, and the students present reports on the work they have completed.

Tipo de avaliação

Distributed evaluation without final exam

Componentes de Avaliação

Designation	Peso (%)
Trabalho laboratorial	40,00
Teste	60,00
Total:	100,00

Componentes de Ocupação

Designation	Tempo (Horas)
Estudo autónomo	87,00
Frequência das aulas	45,00
Trabalho laboratorial	30,00
Total:	162,00

Obtenção de frequência

The attendance requirement for this course includes participating in at least 75% of the laboratory classes and completing all proposed assignments.

Students who received a passing grade in the laboratory classes in the previous academic year may be exempt from attending laboratory classes, according to the rules presented on the Moodle page for this course.

Enrollment on Moodle is mandatory!
https://moodle.ips.pt/2223/course/view.php?id=1896
PASS: EII_2023

Fórmula de cálculo da classificação final

PASSING CONDITIONS

The final grade for the course will be calculated as follows:

• Laboratory grade (N_L), based on the completion of assignments and two practical tests, equal to or greater than 9.5 points with a weight of 40%.


• Final exam grade (N_E), mandatory equal to or greater than 7.5 points, with a weight of 60%.


• In the case of the tests, the minimum grade in the average of the tests is 7.5 points, with a weight of 60% similar to the exam.

The final grade for this course is calculated by: N_F=0.6N_E+0.4N_L
or
N_F=0.2N_T1+0.2N_T2+0.2N_T3+0.4N_L

Where: N_TX corresponds to the grade obtained in tests 1, 2, and 3.