MODELING AND CONTROL OF ELECTROMECHANICAL SYSTEMS
Anno accademico 2015/2016 - 1° annoCrediti: 9
SSD: ING-IND/32 - Convertitori, Macchine e Azionamenti elettrici
Modalità di erogazione: Tradizionale
Organizzazione didattica: 225 ore d'impegno totale, 176 di studio individuale, 49 di lezione frontale
Semestre: 2°
Obiettivi formativi
Prerequisiti richiesti
None.
Frequenza lezioni
Student attendance is required. Remember that to achieve an optimum result, the student is required to attend at least 70% of the course lessons.
Contenuti del corso
Electromechanical systems. Energy balance and conservative systems: determination of electromagnetic forces and torques. General information on electrical machines: materials, losses, efficiency, thermal behavior and types of service. Transformer: Principle of operation; HF transformers. Asynchronous machine: MMF of distributed windings and equations, pole pairs, equivalent circuit, slip, electromagnetic torque; no-load and locked- rotor tests, starting, single-phase induction motors. Synchronous machine: starting cage and damper windings, equivalent circuit, load angle, synchronous and reluctance torque; interconnected synchronous generators. Special synchronous machines: permanent magnet motors, synchronous reluctance motors, stepper motors, switched reluctance motors, brushless DC motors. DC machines: commutator action, load operation, DC motors, shunt excitation generators, series excitation motors. Universal motor. Control of electromechanical systems: rectifiers, converters for DC and AC electrical machines, electrical drives. Digital modulation techniques: PWM, space vector. VSI and CSI. DC and AC motor drives. Scalar control. Current control. V by f constant drives. Stepper motors control. Switched reluctance motor control. Vector control of asynchronous, synchronous and permanent magnet machines.
Testi di riferimento
• Mohan: "Power Electronics", Hoeply.
• Fitzgerarld: "Electric Machinery", Mc Graw Hill.
Programmazione del corso
| * | Argomenti | Riferimenti testi | |
|---|---|---|---|
| 1 | * | Fundamentals of electrotechnical basic principles. |
N.B. La conoscenza degli argomenti contrassegnati con l'asterisco è condizione necessaria ma non sufficiente per il superamento dell'esame. Rispondere in maniera sufficiente o anche più che sufficiente alle domande su tali argomenti non assicura, pertanto, il superamento dell'esame.
Verifica dell'apprendimento
Modalità di verifica dell'apprendimento
Exams: oral tests - Prerequisites: none
Esempi di domande e/o esercizi frequenti
Characteristic and working principles of most common electrical machines: DC, Induction, Synchronous, Stepper, Switched Reluctances. Scalar and Vector Control. Generalized Theory.