Unit ELECTRICAL ENGINEERING
- Course
- Industrial engineering
- Study-unit Code
- 70687012
- Curriculum
- In all curricula
- CFU
- 12
- Course Regulation
- Coorte 2023
- Offered
- 2024/25
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa integrata
ELECTRICAL ENGINEERING
Code | 70367106 |
---|---|
CFU | 6 |
Teacher | Antonio Faba |
Teachers |
|
Hours |
|
Learning activities | Caratterizzante |
Area | Ingegneria elettrica |
Academic discipline | ING-IND/31 |
Type of study-unit | Obbligatorio (Required) |
Language of instruction | Italian |
Contents | Electric networks. |
Reference texts | Teacher notes |
Educational objectives | To be able to solve the main common electrical networks in transient and in steady state. |
Prerequisites | Electric and magnetic field. Electromagnetism. Complex numbers. Differential equations. |
Teaching methods | Taught classes and practical exercises |
Other information | Meet the teacher. |
Learning verification modality | Oral exam. |
Extended program | Electric networks: Electrical dipoles. Concentrated and linear elextrical parameters, Generators and passive dipoles. Kirchhoff laws. Analysis in time domain. Periodic and alternating variables. Fourier's analysis.Analysis of the linear network with sinusoidal waveform. Impedance and admittance. Loop currents and nodal voltages. Superposition principle, Synthesis of networks.Power factor correction.Three-phase systems. Analysis of three-phase systems. Equilibrated and symmetric systems. Electric power. Load parameters. Active and reactive power. The rotating magnetic field. |
Code | 70697806 |
---|---|
CFU | 6 |
Teacher | Antonio Faba |
Teachers |
|
Hours |
|
Learning activities | Caratterizzante |
Area | Ingegneria elettrica |
Academic discipline | ING-IND/31 |
Type of study-unit | Obbligatorio (Required) |
Language of instruction | Italian |
Contents | Electrical machines: transformers, synchronous machine, asynchronous machine, continous current machines. Static energy conversion: rectifiers, inverters and choppers. |
Reference texts | Ermanno Cardelli, "Elementi di elettrotecnica, macchine elettriche", Edizioni Agraf 2002 |
Educational objectives | Knowledge and competence on electrical machines. - Knowledge on functional principle of the electrical machines - Knowledge on the main mechanical characteristics of the electrical machines - Knowledge on the energy performances of the electrical machines - Equivalent circuits computations starting from the conventional tests - Computations of functional parameters and energy performances using the equivalent circuits of the electrical machines. - Base aspects about power convertors design |
Prerequisites | The exam Physica II |
Teaching methods | 4 lesson cycles for transformers, synchronous machines, asynchronous machines and DC machines. At the end of each cycle an exercitation is given to compute the main functional parameters and efficiency performances of the electrical machines. Finally a lesson cycle about static power converters. |
Learning verification modality | The written test consists of one or more exercises aimed at verifying the ability to apply in practice the theoretical concepts acquired in Parts I and II. The oral test consists of questions relating to theoretical aspects inherent in the topics covered in the individual modules and aimed at ascertaining the student's knowledge and understanding of them, as well as the ability to present their content. The tests are conducted according to the following rules: -Written test duration (Parts I and II): 2 hours and 30 minutes. -Oral test (Parts I and II) typically 7 days after the written test. The exact date is announced on the day of the written test. The result of the written is announced at the oral examination. -In case of a failed examination, the student is entitled to keep the result of the written test as part of the current session. In case he/she reappears for a new written test, the previous one is cancelled. For information on support services for students with disabilities and/or DSA visit http://www.unipg.it/disabilita-e-dsa |
Extended program | Teaching unit: electrical machines (45 hours) The single-phase transformer. No load operation. Load operation. Operation in short circuit. Equivalent networks of the transformer. Voltage reduction in load operation. Three-phase transformers. Transformers in parallel. Autotransformer. Transformers for measurements. Conventional tests. Efficiency. Data sheet. Constructive knowledge of the transformers. Classification of transformers. Synchronous machine. No load operation. Load operation. Magnetomotive actions. Operation in short circuit. Free behavior of the alternator. Behavior of an alternator in parallel on a network of voltage and frequency prevalent. V-curves and polar diagrams. Energy balance and efficiency. Details of a synchronous machine. Construction details. Asynchronous machine. No load operation. Operation with a locked rotor in short circuit. Magnetomotive actions in the machine short-circuited rotor locked. Operating with the moving rotor. Equivalent networks of the three-phase asynchronous machines. Energy balance and mechanical characteristics of asynchronous machines. Starting the engine cage. Speed control of induction motors. Single-phase motors. Experiments on asynchronous machine. Experimental determination of the equivalent network. Performance of the asynchronous machine. Other operations of the asynchronous machine. Specification of asynchronous machines. Construction details. Continous current machines. General and construction details. No load operation. Excitation of the current machines. Load operation. General equations of the machine with separate excitation and parallel exitation. External features of the machine with separate excitation and parallel exitation. Electromechanical characteristics of the speed of the machine with separate excitation and parallel exitation. Electromechanical characteristics of torque of the machine with separate excitation and parallel exitation. Mechanical characteristic of the machine with separate excitation and parallel exitation. General equations of the machine in series with excitement. Characteristic curves of the machine excited in series. Commutator motors powered by alternating current. Performance of current machines. Details of continous current machines. Teaching unit: Static energy conversion (9 hours) Junction diodes. Junction transistor. AC/DC Converters: half-wave rectifiers, full wave rectifiers, three-phase rectifier circuits, controlled rectifiers. DC/AC Converters: Inverter, PWM technique. Uninterruptible Power Supply. AC/AC Converters: Load regulation in AC, phase cutting technique. DC / DC converters: chopper, energy recovery techniques. |