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Presentation
Presentation
This course is focused on the study, analysis, and sizing of two of the most important rotating electromagnetic machines (Induction Machine and Synchronous Machine) present in today's society across a wide variety of environments.
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Class from course
Class from course
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Degree | Semesters | ECTS
Degree | Semesters | ECTS
Bachelor | Semestral | 5
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Year | Nature | Language
Year | Nature | Language
3 | Optional | Português
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Code
Code
ULHT46-27709
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Prerequisites and corequisites
Prerequisites and corequisites
Not applicable
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Professional Internship
Professional Internship
Não
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Syllabus
Syllabus
Electromechanical Energy Conversion: coupling field; magnetic co-energy; electromagnetic forces and binaries Rotating EM windings: magneto-motive forces; windings with discrete and sinusoidal distributions; rotating field; inductance; voltage and current equations in the windings (VCEW) Three Phase Asynchronous Machine (AM): VCEW; Clarke and Park transformations Torque; AM equivalent steady-state (ST) model; power analysis; Thevenin equivalent model; torque; Steady-state plots Synchronous Machine (SM): VCEW; reluctance and reaction torque; start-up maneuver; SM ST model; deduction and analysis; synchronous reactance; power angle; power analysis; operation as a motor/generator and as a synchronous compensator Special Machines: stepper, reluctance, hybrid, single-phase induction and universal series motors.
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Objectives
Objectives
The focus of study is set the asynchronous machine, synchronous machine and some special electric machines. It is intended to provide students with analytical skills and tools for the design of electrical machines (EM), developing their ability to understand the operating principles inherent to each machine, as well as their applicability in practical problems. Simultaneously, it is intended that students be able to increase their critical mind-set in the analysis of results, promoting the experimental evidence of the concepts taught through laboratory tests and the performance of simulation works, using models developed by the students.
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Teaching methodologies
Teaching methodologies
To support the teaching-learning process, slide projections, electrical engineering simulation software and demonstration video projections are used.
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References
References
Fitzgerald, A. E., Kingsley, C., & Umans, S. D., Electric machinery. 7th edition McGraw Hill (2013) Krause, P. C., Wasynczuk, O., Sudhoff, S. D., Pekarek, S., Analysis of electric machinery and drive systems. 4rd edition. Wiley-IEEE Press (2015) Chapman, S. J.. Electric machinery fundamentals. 5th edition.McGraw-Hill (2011) Sen, P. C. Principles of electric machines and power electronics. 3rd edition. Jonh Wiley & Sons. (2013) Sahdev, S. K. (2017). Electrical machines. Cambridge University Press.
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Assessment
Assessment
- Avaliação teórico-prática (60%) - realização de 2 frequências no período de aulas, cada uma com peso de 30% na avaliação final ou avaliação por exame de recurso/especial com o valor de 60%. Esta componente tem nota mínima de 6 val. em 12 val.
- Avaliação laboratorial (30%) - Avaliação da componente laboratorial através da realização de relatórios dos trabalhos práticos feitos em laboratório ou, em época de recurso/especial, através de um exame de laboratório. Esta componente tem nota mínima de 3 val. em 6 val.
- Os trabalhos laboratoriais serão os seguintes:
- 1. Simulação de uma máquina de indução em carga
- 2. Ensaios económicos de uma máquina de indução
- 3. Ensaios da económicos da Máquina Síncrona e funcionamento como Gerador Isolado
- 4. Paralelo da máquina síncrona com a rede
- A assiduidade e participação nas aulas será contabilizada com uma componente de 10% da nota final.
- A realização de exame segue o regulamento geral de avaliação, sendo as inscrições obrigatórias.
- Nota: Poderá ser realizada uma prova oral, a pedido do docente, para confirmar qualquer nota obtida na avaliação
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Mobility
Mobility
No
