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Presentation
Presentation
This unit is oriented to the study, analysis and dimensioning of the main electromagnetic machines present in the daily life of today's society in its most diverse 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
2 | Mandatory | Português
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Code
Code
ULP732-1269
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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
Introduction to Electric Machines: Reviews on electromagnetism. Introduction to magnetic circuits. Inductance concept. Magnetic properties of materials. Magnetic circuits with sinusoidal excitation. Electrical Transformer: Linkage flux and circuits with magnetic coupling. Ideal transformer. Equivalent circuit: parameter determination. Open circuit and shor circuit tests. Loaded transformer: Voltage regulation, losses and efficiency. Parallel operation. Vector group Autotransformers, measurement transformers. Direct current machine: Working principle Windings, commutator, brushes. Torque and induced voltage. Reversibility. Equivalent circuit. Shunt, series and compound configurations. Torque-speed characteristic. Power balance.
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Objectives
Objectives
This unit introduces some necessary analysis tools and then analyzes, studies and designs electromagnetic transformers and direct current rotary machines. The aim is to provide students with analysis capabilities and sizing tools for electrical machines (EM), developing their ability to understand the principles of operation inherent in each machine, as well as their applicability in practical problems. At the same time, it is intended that students are able to broaden their critical thinking in the analysis of results, promoting experimental evidence of concepts taught through laboratory tests and simulation work, using models developed by students.
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Teaching methodologies and assessment
Teaching methodologies and assessment
The weekly 4hr classroom lessons are distributed as follows: 1.5hrs of theoretical lectures for expository purpose; 1.5hrs of practical classes, for practical problems solving and 1h of laboratory, for demonstration and experimental validation. Continuous assessment with final test. Final grade: 60% written test + 40% laboratory works
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References
References
Marques, H. S. (2021), Apontamentos de Máquinas Eléctricas I. Lisboa: ULHT
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Office Hours
Office Hours
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Mobility
Mobility
No
