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Electrical Machines

Code 8565
Year 3
Semester S2
ECTS Credits 6
Workload PL(15H)/T(15H)/TP(30H)
Scientific area Electrotechnics and Electronics
Entry requirements Not applicable.
Mode of delivery Face-to-Face.
Work placements Not Applicable.
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.
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.
Main Bibliography P. C. Sen: "Principles of Electric Machines and Power Electronics", John Wiley & Sons.
S. J. Chapman: "Electric Machinery Fundamentals", McGraw-Hill.
Language Portuguese. Tutorial support is available in English.
Last updated on: 2021-06-18

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