MACHINERY AND ELECTRICAL SYSTEMS
Learning outcomes of the course unit
The course provides the basic knowledge required for the usage of the most commonelectrical machine and power systems.
Course contents summary
Electric machines classification. The main components of the electric machines. Joule losses and iron losses: the efficiency of the electrical machines. Transformer: ideal transformer and real transformer. no load operations and rated load operations. Voltage drop, power, losses and efficiency of electrical transformer. Three phases transformers.
Induction machines: mechanical and electrical behaviour. Induction motor start-up andvelocity regulation.
Direct Current machines: electrical and mechanical behaviour, start-up and velocity regulation.
Permanet Magnet Synchronous Machines (PMSM): A.C. and D.C. PMSM, electrical and mechanical behaviour.
Fundamental of power systems: trend toward growing power output of new thermal, nuclear, alternative and water generating station, electrical distribution systems of great and low magnitude, single phase transmission and 3-phase transmission.
Engineering of electrical transmission lines:resistance, inductance, inductive reactance, capacitance, capacitive reactance.Transmission linear models: the short transmission line, the medium lenght line, the long transmission line. Power cables (low, medium, high and extremely high voltage). Low voltage cables ( good polymers and compoud workability, cost and competivity). Fundamental of power flow solution: scope of power systems analysis, faults, protection and stability. Systems protection , circuit breaker, time current characteristic and charts, fuse time-current characteristics charts, ground-fault protected time current charateristic chart, coordination.
Pietro Vezzani. Elementi di Progettazione elettrica. TNE Torino
E.Bassi, A.Bossi ¿Macchine e Azionamenti Elettrici¿ UTET, Milano ISBN: 88-7933-184-1