Electromechanical Energy Conversion
Code
11068
Academic unit
Faculdade de Ciências e Tecnologia
Department
Departamento de Engenharia Electrotécnica
Credits
6.0
Teacher in charge
Mário Fernando Ventim Neves
Weekly hours
5
Teaching language
Português
Subject matter
- Foundations of the electromechanical energy conversion. Electrical, magnetic and Mechanical energies. Virtual works principle. Force and Torque
- Rotating Field Machines. Magnetic Circuit. Air-gap field. Induction coefficients. Pulsating and Rotating fields. Synchronous and Assynchronous Machines.
- Assynchronous machine. Constitution. Operation. Equations. Equivalent Schematic circuit. Speed and Torque. Circle diagram. Speed control. Principle of the two-axis transform.
- Synchronous Machine. Cilindrical and salient-poles rotors. Coeficients. Equations and Schematics. Alternator-Grid parallel. Active and reactive power flow. Characteristics. Rotor oscillations. Damping windings. Sudden symmetrical short-circuit. Transient and sub-transient time constants. Synchronous motor. Starting. Synchronous compensator.
- Direct current Machine. Constitution. “Lap” and “Wave” windings. Armature magnetic reaction. Auxiliary poles. Types of excitation. Generators and motors characteristics. Electric traction. Speed control. Dynamic regime.