ID:
504723
Duration (hours):
52
CFU:
6
SSD:
CONVERTITORI, MACCHINE E AZIONAMENTI ELETTRICI
Year:
2025
Overview
Date/time interval
Primo Semestre (29/09/2025 - 16/01/2026)
Syllabus
Course Objectives
This course aims to provide students with the knowledge of the main types of electronic converters (rectifier, three-phase star converter, bridge rectifier, chopper, inverter with PWM) applied to two types of rotating electrical machines (DC brushed machine and induction machine) and the main basic control schemes to control their torque and speed, both in open loop and closed loop.
At the end of this part of the course, students should be able to provide the general criteria to control these rotating electrical machines with respect to the performance required by the users in terms of torque and speed, taking into account their operating limits. Moreover, students will obtain the knowledge of the prerequisites necessary to attend the course of ADVANCED ELECTRICAL DRIVES (only for Electrical Engineering).
At the end of this part of the course, students should be able to provide the general criteria to control these rotating electrical machines with respect to the performance required by the users in terms of torque and speed, taking into account their operating limits. Moreover, students will obtain the knowledge of the prerequisites necessary to attend the course of ADVANCED ELECTRICAL DRIVES (only for Electrical Engineering).
Course Prerequisites
The students who will attend this course are required to possess or acquire adequate initial training on the following knowledge: electrical circuits, three-phase electrical systems, rotating magnetic field, basic operating principles of the main rotating electrical machines, power electronics, mechanics and automatic controls.
Teaching Methods
The 6 CFU of the course correspond to 52 hours and precisely: 33 hours of lessons and 19 of exercises. They are organized by means of frontal lessons, featured through PowerPoint presentations, and insights using the blackboard. The PowerPoint presentations allow to show images of electrical machines, schemes of electronic converters and control schemes, useful for reaching the course objectives. During the course, some parts of electrical machines and other devices are presented in the classroom or in the laboratory.
Assessment Methods
The exam consists of an individual oral test to assess the skills acquired in relation to the content of this part of the course. The test focuses on at least three distinct topics handled during the course. The final evaluation is based on the degree of understanding of the topics presented and the ability to integrate the knowledge gained during the course.
Texts
The presentations in PowerPoint, prepared and used by the teacher of the course, are available for the students in PDF format via KIRO website. This documentation is sufficiently detailed to form the reference text of the course.
For further details related to the power electronics, the following text can be consulted:
Ned Mohan, Tore M. Undeland, William P. Robbins, “Power Electronics: Converters, Applications, and Design”, John Wiley &Sons, 2003.
For further details related to the power electronics, the following text can be consulted:
Ned Mohan, Tore M. Undeland, William P. Robbins, “Power Electronics: Converters, Applications, and Design”, John Wiley &Sons, 2003.
Contents
The contents of this course are summarized below.
Mechanical concepts applied to the electrical drives: dynamic mechanical equation, reflected torque and inertia, torque/speed load and motor curves, stability of an operating point, jerk, torsional vibrations in electrical drives, two-mass resonant system, optimal transmission ratio.
AC/DC and DC/DC converters: schemes and operating principles of rectifiers, three-phase star converter, bridge rectifier, chopper.
DC brushed machine: operating principles and main construction aspects of the brushed DC machine; main equations of the DC brushed machine; operating regions in the torque-speed plane; operating limits; transfer functions of the DC brushed motor; PI controller; torque control of the DC brushed motor.
DC/AC converters: schemes and operating principles of the inverter; common mode voltage; blanking time; PWM method; operating range of the inverter; quasi-square wave operation; third harmonic injection.
AC machines: rotating magnetic field; operating principles and main construction aspects of the induction machine; equivalent circuit of the induction motor; characteristic curves of the induction motor; operating regions of the induction motor; energy flow in an electrical drive; harmonic content of the stator current; control schemes for induction motor (constant flux control, closed-loop flux control, slip compensation, open-loop torque control, closed-loop speed control, control with current controlled voltage source inverter).
Induction machine model: d-q-0 transformation; stationary reference frame.
Permanent magnet synchronous motor (PMSM): operating principles and main construction aspects of the PMSM; sensors for electrical drives.
Mechanical concepts applied to the electrical drives: dynamic mechanical equation, reflected torque and inertia, torque/speed load and motor curves, stability of an operating point, jerk, torsional vibrations in electrical drives, two-mass resonant system, optimal transmission ratio.
AC/DC and DC/DC converters: schemes and operating principles of rectifiers, three-phase star converter, bridge rectifier, chopper.
DC brushed machine: operating principles and main construction aspects of the brushed DC machine; main equations of the DC brushed machine; operating regions in the torque-speed plane; operating limits; transfer functions of the DC brushed motor; PI controller; torque control of the DC brushed motor.
DC/AC converters: schemes and operating principles of the inverter; common mode voltage; blanking time; PWM method; operating range of the inverter; quasi-square wave operation; third harmonic injection.
AC machines: rotating magnetic field; operating principles and main construction aspects of the induction machine; equivalent circuit of the induction motor; characteristic curves of the induction motor; operating regions of the induction motor; energy flow in an electrical drive; harmonic content of the stator current; control schemes for induction motor (constant flux control, closed-loop flux control, slip compensation, open-loop torque control, closed-loop speed control, control with current controlled voltage source inverter).
Induction machine model: d-q-0 transformation; stationary reference frame.
Permanent magnet synchronous motor (PMSM): operating principles and main construction aspects of the PMSM; sensors for electrical drives.
Course Language
English
More information
For any further information, please contact the professor via email: lucia.frosini@unipv.it
Degrees
Degrees (3)
COMPUTER ENGINEERING
Master’s Degree
2 years
ELECTRICAL ENGINEERING
Master’s Degree
2 years
INDUSTRIAL AUTOMATION ENGINEERING
Master’s Degree
2 years
No Results Found