Insegnamento mutuato da: B020438 - ELETTROTECNICA INDUSTRIALE Corso di Laurea in INGEGNERIA MECCANICA Curricula ELETTRICO/AUTOMAZIONE
English under request
Operational theoretical introduction to electrical applications used in the industrial field such as: three-phase asynchronous motors and their drives, single-phase and three-phase transformers, direct current machines and their drives, alternators, special motors and related drives.
Photovoltaic plants fundamentals.
Allan R. Hambley
Curatore: F. Grasso, A. Luchetti, M. C. Piccirilli
Collana: Prentice Hall
Anno edizione: 2009
Tipo: Libro universitario
Pagine: 542 p., ill. , Brossura
To train at a professional level the student's knowledge to make the students able to operate autonomously in the field of practical applications of electrical engineering such as: electrical machines and electrical systems
Practical knowledge on electrical machines
Use of specific SWs such as power line sizing programs
- operating principles of electric machines for industrial use.
- drives of electric machines with electronic converters.
- bases for energy efficiency of industrial electrical equipment
- fundamentals on PV plant sizing
Knowledge of the methods of analysis of the electric circuits in continuous and sinusoidal steady state.
Power in electrical circuits.
The final exam aims to ascertain the acquisition of learning outcomes in terms of knowledge and skills an oral interview without the aid of notes or books.
The intermediate tests consist, in each case, of 3 exercises aimed at verifying knowledge on three-phase systems, on electric machines, on electric drives.
The oral exam consists of an interview aimed at evaluating the student's communication skills and at bringing out the knowledge of the topics discussed and discussed in the course.
Transformer: general information, equivalent circuits, complex reluctance, loss figure, no-load operation, charged, short-circuit. Regulation diagram. Transformer efficiency. Parallel of the transformers. Three-phase transformers: general information, connections. Transformers in oil, incorporated in dry and air. Notes on the structure of transformers incorporated in resin. Transformer classes M.T./B.T. in resin. Selection and installation criteria for transformers for M.T. cabins user. Autotransformer.
Rotating magnetic field: Relationship between angular velocity of the rotating magnetic field, number of polar torques and rotation speed.
Asynchronous machines: general information, operating principle, equivalent circuit. Load resistance. Expression of mechanical torque. Mechanical characteristic of the asynchronous motor. Operating fields as a motor, as a generator. Speed ??regulation. Start-up characteristics of the three-phase asynchronous motor: motor with double-cage rotor, with deep-groove cage, with wound rotor equipped with rings. Operating principles of single-phase asynchronous motor. Criteria for starting single-phase asynchronous motors. Overview of the construction features of small power asynchronous motors.
Direct current machines: general information, operating principle, equivalent circuit of armature and excitation. Independent excitation, series excitement, excitation in derivation. Expression of mechanical torque. Mechanical characteristic. Speed ??regulation. Constant torque and constant power drive.
Electrical Safety: Danger of electric current. Perception, tetanization and ventricular fibrillation thresholds. Diagram of the conventional danger zones for sinusoidal currents at 50-60 Hz. Electric resistance of the human body. Voltage hazard limits. Limit contact voltage. Low voltage distribution systems. Overcurrent protection. Thermal, magnetic, magneto thermal switches, fuses. Protection against direct contacts. Protection against indirect contacts. Earth plant. Earth resistance. Differential switch. Hints to the legislation and the CEI norms.
Photovoltaics: Conversion of solar energy into electricity. Photovoltaic modules technologies. Characteristics of photovoltaic modules. Electric energy conversion systems. MMPT techniques. Sizing criteria for photovoltaic fields. Estimation of the flexibility of a photovoltaic generator and econimic valorisation of the energy produced - "Conto Energia". Optimization techniques of photovoltaic systems: mismatching, shading, positioning of modules, orientation and inclination.