Scheda insegnamento (lingua inglese)

Stampato il 19.05.2024 ore 15:09

Title

Teoria delle reti elettriche ed elettrotecnica - I modulo
Electrotechnics and electrical circuit theory

Degree

Corso di Laurea in Ingegneria Elettronica
First Level Degree in Electrical Engineering

Year

2

Teaching Period

1

Credits

6

Teacher:   Fabrizio Bellina Academic year:   2009/2010

Objectives: Requirements: Acquired skills:
Lectures and exercises hours
Topics Specific contents  
Electric charges and current density field  Free charges, charge density. Current and current density, charge balance law.
3
Electrical forces and voltages  Electrical forces and fields. Electrical work, voltage. Scalar potential, equipotential surfaces. Specific electrical work, voltage and power.
4
Resistive phenomena  Ohm's and Joule's laws. Electrical resistance, material electrical conductivity. Constitutive law. General expressions for the electrical resistance.
4
Electrical generators  No-load behaviour, electromotive forces. Behaviour under load. Power balance. Voltage measurements in the generators. Types of generators.
3
Steady-state network analysis  From the electromagnetic fields to the electrical circuits. Electric power and work. Amperometer, voltmeter, wattmeter. Kirchhoff's laws. Circuits topology. Node potentials and loop currents methods. Theorems about dipoles circuits. Passive affine double dipoles. Synthesis of double dipoles. Driven generators.
15
Electrostatic field  Electrostatic potential. Faraday’s experience, electric induction. Conductive bodies. Polarisation, constitutive laws for dielectric materials. Laplace and Poisson equations. Boundary conditions. Capacitor, partial capacitances. Electrostatic energy and specific energy.
12
Magnetic field and magnetic circuits  Faraday-Neumann’s and Lenz laws. Magnetic induction, magnetic vector potential. Magnetic field vector, Ampere's law. Displacement current density. Maxwell equations. Laplace and Poisson equations. Boundary conditions. Magnetisation, constitutive laws. Magnetic hysteresis. Self and mutual inductance coefficients. Magnetisation work and energy. Scalar magnetic potential, reluctance and permeance, Hopkinson's law. Ferromagnetic nuclei, Kirchhoff's laws for magnetic circuits. Circuits with permanent magnets, inductors with ferromagnetic nuclei.
18
Circuit behaviour of capacitors and inductors  Response to the main types of input waveforms. Charge and discharge, time constant. Capacitors and inductors in series and in parallel, equivalent circuits.
5
Periodical and sinusoidal quantities  Periodical quantities. Description in the time and in the complex domains. Phasors. Operations with sinusoidal and phasorial quantities
2
Networks in sinusoidal regime  Kirchhoff's laws. Impedance, admittance. Synthesis of impedances /admittances. Power. Theorems for the circuits in sinusoidal regime. Analysis in the frequency domain, resonance. Inductive double dipoles.
14
Three phases-systems  Delta and Y connections for loads and generators. Balanced loads. Power, measures
2
Networks in periodical non-sinusoidal regime  Representation as Fourier's series. Power. Generators. Circuit analysis methods.
5
Network analysis in variable regime  Overview. Initial conditions. Analysis in the time domain. Homogeneous differential equation solution, free evolution. Particular solutions. Use of Laplace transform.
9
 Total hours for lectures and exercises 96 
 for exercises only 20 
Further educational activities
hours
  Labs  
  Tutorials / Seminars  
  Workshops  
  Guided tours  
   
 Total hours for further educational activities 0 
 Total hours
96 

Type of exam: Written and oral

References: Additional material or information on line http:// web.diegm.uniud.it/elettrotecnica


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