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Presentation
Presentation
This course builds on the concepts covered in Electrical Machines I. It emphasizes the study, analysis, and design of key electromagnetic machines commonly used in various aspects of modern society.
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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 | Mandatory | Português
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Code
Code
ULP732-1275
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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) induction matrices VCEW Clarke and Park transformations torque AM equivalent steady-state (ST) model design power analysis Thevenim equivalent model torque Steady-state plots Synchronous Machine (SM) inductance matrices VCEW reluctance and reaction torque start-up maneuver SM ST model deduction and analysis synchronous reactance power angle power analysis torque 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 main objective of the subject on Electrical Machines II is to teach the theoretical and practical foundations of electrical machines, covering both scientific and technological aspects. Students will be trained to: Understand the basic principles of energy conversion between electrical and mechanical. Analyze electromechanical energy conversion systems using appropriate tools and concepts. Deduce and use expressions and matrices related to the electromechanical torques of different electrical machines. Study and apply system equations in dynamic regime and simplification techniques through changes of variables. Develop equivalent models of electrical machines in balanced steady state, applying classical approaches. Know the operating principles of different types of lower power rotating electrical machines.
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Teaching methodologies
Teaching methodologies
The Electrical Machines II curricular unit uses a teaching methodology that integrates theoretical and practical approaches, focusing on innovative methods such as: - Project-Based Learning (PBL): Students participate in practical projects involving the sizing and implementation of transformers and DC motors. - Experimental Tests: Carrying out laboratory tests to validate theoretical concepts and develop practical skills. - Computer Simulations: Use of simulation software to model electrical machines, allowing a deeper understanding of the machines' behaviors and characteristics. - Group Work: Development of group projects, promoting collaboration and the ability to solve complex problems. - Laboratory classes: to improve the practical understanding of theoretical concepts, allowing students to apply the knowledge acquired in real situations and develop technical skills essential for their training.
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References
References
Fitzgerald, A. E., Kingsley, C., & Umans, S. D. (2013). Electric Machinery (7th ed.). McGraw-Hill. ISBN 978-0073380469. Jesús Fraile Mora (2008). Máquinas eléctricas (6.ª Ed.). ISBN: 978-84-481-6112-5 Stephen J. Chapman (2013). Fundamentos de Maquinas Eletricas, Mc Graw Hill. ISBN: ISBN: 978-8580552065
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Assessment
Assessment
-Avaliação teórico-prática (60%) - realização de 2 frequências (provas escritas individuais) 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 por meio de relatórios dos trabalhos práticos realizados em laboratório ou, em época de recurso/especial, por meio de um exame de laboratório. Esta componente exige uma nota mínima de 3 em 6.
- Assiduidade e participação nas aulas (10%): A assiduidade e participação serão consideradas e representarão 10% da nota final.
Os estudantes não aprovados em avaliação contínua realizam um exame final com a ponderação de 100%. Este exame será constituído por uma prova escrita individual obrigatória e por uma prova oral opcional determinada pelos docentes para cada estudante. Quando realizada, a prova de avaliação oral determina a avaliação final na UC.
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Mobility
Mobility
No
