Ing Ind - Inf (Mag.)(ord. 270) - MI (471) BIOMEDICAL ENGINEERING - INGEGNERIA BIOMEDICA
090918 - POWER ELECTRONICS
Ing Ind - Inf (Mag.)(ord. 270) - MI (473) AUTOMATION AND CONTROL ENGINEERING - INGEGNERIA DELL'AUTOMAZIONE
090918 - POWER ELECTRONICS
Ing Ind - Inf (Mag.)(ord. 270) - MI (476) ELECTRONICS ENGINEERING - INGEGNERIA ELETTRONICA
090918 - POWER ELECTRONICS
This course provides the fundamentals of power electronics. Topics covered include: power semiconductor switches, drive and protection circuits; switching power converters; electric motor drive and control; thermal design. The primary goal of the course is to provide students with the basic skills and knowledge required to analyze and design practical power electronic systems in the low-power range.
Risultati di apprendimento attesi
Knowledge and understanding (Dublin Descriptor 1)
On completion of this course, students will be able to:
• comprehensively understand the principles and operation of modern power semiconductor devices, their limitations, and their driving and protection techniques;
• have a sound knowledge and understanding of the operation of pulse width modulated dc-dc converters used in low power applications;
• understand the dynamic performance of dc-dc converters and develop small-signal converter models;
• understand the basic working principles of brushed DC motors;
• understand electric motor drives as the synthesis of electric machines, power electronics and feedback control;
• understand and manage the thermal stress of active components in power electronic systems.
Applying knowledge and understanding (Dublin Descriptor 2)
Specific examples and case studies will be provided to make students able to:
• select the active/passive components of a power electronic circuit on the basis of specifications;
• apply appropriate techniques in the design of different types of power converters to meet given specifications;
• perform calculations to carry out approximate designs of low-power electric drives and their components;
• analyze/design controllers for power converters and electric drives;
• tackle with steady-state and dynamic thermal performance of power devices and ICs.
Power semiconductor switches, drive and protection circuits
Introduction to power electronics. Energy efficiency: the role of power electronics. Elementary switching circuits. Overview of power semiconductor switches. Conduction and switching losses.
Closed-loop operation of a PMDC motor: control schemes. Speed, torque and position control. Cascade control systems. Design of a DC motor drive.
Thermal considerations for power semiconductors. Heat transfer by conduction, convection and radiation. Packaging of power devices. Heat sinks. Steady state thermal calculations. Transient operation: thermal impedance. Transient thermal calculations.
Basic understanding of linear circuit theory (properties of electrical networks, fundamental network theorems), analog electronics (amplifiers, filters, frequency response, feedback principles, stability and frequency compensation), electron devices (mainly p-n junctions and MOSFET transistors). Some background in electrical machines is recommended as well.
Modalità di valutazione
Assessment is based on a final exam consisting of a 2-hour, closed-book written test including:
• two numerical problems involving analysis and design (e.g. analysis of switch-mode power converters, electric motor drives, power device drive&protection circuits, etc. Selection of active and passive devices for specific power applications) – DD 1,2;
• an open-answer theoretical/practical question on topics taught in the course – DD 1,2.
The grade of the written exam (highest mark: 30/30) is based on the percentage weightings listed below:
• 45% for each of the two numerical problems;
• 10% for the theoretical question.
Students who pass the written exam (pass mark: 18/30) may take an optional oral exam, consisting of a discussion on a topic picked at random from this list . The oral exam results in the adjustment (-2/30 to +2/30) of the written exam score, yielding the final grade. “Cum laude” is awarded if the final grade is strictly higher than 31/30.
N. Mohan, T. Undeland, W. Robbins, Power electronics: converters, applications, and design, 3rd Edition, Editore: John Wiley & Sons, Anno edizione: 2002, ISBN: 978-0-471-22693-2
R.W. Erickson, D. Maksimovic, Fundamentals of Power Electronics, 2nd Edition, Editore: Springer Science+Business Media, Anno edizione: 2001, ISBN: 0-7923-7270-0
B. Murari, F. Bertotti, G.A. Vignola, Smart power ICs, Editore: Springer, Anno edizione: 2002, ISBN: 978-3-540-43238-8
B.W. Williams, Power Electronics: Devices, Drivers, Applications, and Passive Components, Editore: e-book version, Anno edizione: 2006 http://personal.strath.ac.uk/barry.williams/book.htmCourse websitehttp://home.deib.polimi.it/ghioni/pel/ Note:
lecture slides, suggested readings, supplementary course materials and more info available on this website.
Tipo Forma Didattica
Ore di attività svolte in aula
Ore di studio autonome
Laboratorio Di Progetto
Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese