35367 - Industrial Electronics M

Learning outcomes

Providing basic knowledge on the operating principles and basic design criteriaof the electronic systems forindustrial applications.

Course contents

Introduction to industrial/power electronics: control system of an industrial plant, power converter definition, control network, power amplifier, control and power electronics.

Basic concepts recalls: RMS value, active and reactive power, apparent power, Fourier transform and series, periodic signals. Defining equations for capacitor and inductor.

Power converter classification : based on the circuit function and based on the electron device operating condition. Controlled and uncontrolled converters. AC/DC, DC/DC, DC/AC, AC/AC converters. Series linear converters, switching mode power converters.

Converter performance : input and output distortion, efficiency, power factor, gain/bandwidth, regulation, output resi stance, temperature coefficient.

Power electronic devices : working principles and characteristics of diodes, BJT; MOSFET, IGBT, tiristors and GTO. Maximum voltages and currents limitations, switching speed.

Driver circuits for power switches.

Snubbers : limitation of dynamic stress of power electron devices

Uncontrolled AC/DC converters ; rectifiers. Half bridge rectifier. Transformer. Full bridge rectifier. Input and output filters design for power factor and distortion enhancement. Three phase full bridge rectifier.

Tiristor controlled AC/DC and AC/AC converters

DC-DC series linear converters : voltage regulator. DC/DC converter with Zener diode. Series DC/DC converter with voltage feedback.

Losses : calculation of conduction and switching losses in power electronic devices. Thermal constrains for the design of heat sinks.

Structures and equations of switching networks and their implementation with different electron devices. Switching strategies for the implementation of DC/DC, DC/AC, AC/DC and AC/AC converters.

DC-DC switching converters : buck, boost, Cuk, Sepic.

Basics on magnetic components : inductor and power transformer.

DC-DC isolated switching converters : forward, flyback, full bridge.

Control : basics of control theory for power converters, description of a PWM IC controller

DC/AC (inverters): half and full bridge inverter basics

Application examples : electric motor control, arc welding control

Design examples with CAD software (LTspice)

Buck converter

Full bridge DC/DC switching converter

Flyback converter

Readings/Bibliography

Mohan, Undeland, Robbins: “Power Electronics” – Wiley&Sons

F. Filicori, G. Vannini: “Elettronica industriale – conv. DC/DC operanti in commut.” – Esculapio

B.Dewan, A.Straughen: “Power Semiconductor Circuits” – Wiley&Sons

R. W. Erickson: “Fundamentals of Power Electronics” – Kluwer Academic Publishers

Rashid: “Elettronica di Potenza” – Pearson

Teaching methods

Frontal lectures are supported by the use of the video projector: the slides of the presented materialare made available in advance to students.

Numerical examples are solvedby the lecturer on the blackboard.

Circuit simulations with CAD software.

Assessment methods

The final test is an oral examination consisting of theoretical questions and one design exercise similar to the ones proposed during the course.

The final exam is aimed to the evaluation of the achievement of the following educational goals:

- knowledgeof the characteristics of electronic components for industrial (power)applications

- Mastering the working principles of the power electronic circuits described during the course

- Mastering the guidelines for the design of power electronic circuits for industrial applications

Teaching tools

Printouts of the slides projected during the lectures are available to students.

Application Notes of some circuits and devices.

CAD tool for the simulation of power electronic circuits (PSIM) 

Office hours

See the website of Corrado Florian