| Code |
8565
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| Year |
3
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| Semester |
S2
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| ECTS Credits |
6
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| Workload |
PL(15H)/T(15H)/TP(30H)
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| Scientific area |
Electrotechnics and Electronics
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Entry requirements |
Not applicable.
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Mode of delivery |
Face-to-Face.
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Work placements |
Not Applicable.
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Learning outcomes |
The main objectives of this course unit are the study of the constructional features, operating principles and main applications of three-phase synchronous and asynchronous electric machines.
At the end of this course unit the student should be able to select and use three-phase synchronous and asynchronous electric machines.
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Syllabus |
ASYNCHRONOUS MACHINES:
Introduction.
Constructional features.
Windings.
Rotating magnetic field.
Induced voltages.
Polyphase induction machines.
Equivalent circuit model: no-load and blocked-rotor tests.
Performance characteristics.
Power flow diagram.
Rotor resistance effects.
Starting of induction motors.
Space- and time-harmonics.
SYNCHRONOUS MACHINES:
Introduction.
Constructional features.
Synchronous generators: The infinite bus.
Synchronous motors.
Equivalent circuit model: determination of the synchronous reactance Xs.
Phasor diagram.
Power and torque characteristics.
Salient-pole machines.
Slip test.
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Main Bibliography |
P. C. Sen: "Principles of Electric Machines and Power Electronics", John Wiley & Sons.
S. J. Chapman: "Electric Machinery Fundamentals", McGraw-Hill.
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Teaching Methodologies and Assessment Criteria |
Written test (15 points). Final examination (15 points). Laboratory evaluation: 5 points.
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Language |
Portuguese. Tutorial support is available in English.
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