ELECTRICAL DRIVESAnno accademico 2020/2021 - 2° anno
SSD: ING-IND/32 - Convertitori, Macchine e Azionamenti elettrici
Organizzazione didattica: 225 ore d'impegno totale, 146 di studio individuale, 49 di lezione frontale, 30 di esercitazione
The course has the purpose to provide the fundamentals of modeling, principles of operation and control, main basic knowledge and future developments of electrical drives.
Knowledge of the design and operation of most common and advanced control tecniques in conventional and advanced electrical drives.
New special machines contol.
Modalità di svolgimento dell'insegnamento
The training objectives are linked both to the acquisition of new knowledge, therefore frontal lessons as teaching method and tutorials to include the ability to apply the acquired knowledge through computer and/or laboratory exercises.
This year's teaching could be taught not only at University but in a mixed or remote way.
Should teaching be carried out in mixed mode or remotely, it may be necessary to introduce changes with respect to previous statements, in line with the programme planned and outlined in the syllabus.
Power Electronics and Electrical Machines courses frequency.
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
Knowledge of design features and operation of the electrical drives and of their most common control modes. AC Drives: control of torque, speed and position. Low and high dynamic performance. Elastic shaft drives. Losses and derating. Stability. Induction motor drives: Field-Oriented Control in steady-state and transient. Rotor and stator flux estimation: direct methods. Rotor flux observers. Stator flux observers. Indirect methods. Rotor time constant. Tuning and parameter identification. Self Commissioning and continuous self tuning. Sensorless drives. Sensorless control at low and zero speeds. Synchronous motor: Field Oriented Control in steady-state and transient. Special Machine Drives: stepper and switched reluctance motors. Permanent Magnet (PM) motor drives: DC brushless, surface mounted and Interior PM motor drives, Synchrels. Integration of the electrical drives in industrial production. Fault tolerance and Reliability. EMI in electrical drives.
Testi di riferimento
Lipo, Novotny: "Modern Electrical Drives", Kluwer Editor, 1998.
B. Bose “Power Electronics and Variable Frequency Drives”, IEEE Press.
Mohan: "Power Electronics", Hoeply.
Fitzgerarld: "Electric Machinery", Mc Graw Hill.
Programmazione del corso
|Fundamentals of electrotechnical basic principles.
|Fundamentals of electrical machines basic principles.
Modalità di verifica dell'apprendimento
Exams: oral tests - Prerequisites: none.
Learning assessment may also be carried out on line, should the conditions require it.
Esempi di domande e/o esercizi frequenti
Characteristic and working principles of most common electrical drives control schemes: Induction, Synchronous, Stepper, Switched Reluctances drives.
Scalar and Vector Control.
PM and special machines.
The teacher is also available for on line reception meetings.