The lectures present a few basic concepts concerning functional characteristics, design and application of converter-fed electrical machines, in particular induction motors and permanent magnet synchronous motors (PMSM or brushless motors). A few hints on their control and transient behavior are given: various regulation schemes, e.g. Field Oriented Control, are introduced for torque and speed control for operation in both the constant-torque and field-weakening range.
Course Prerequisites
Basic knowledge of Electrical Drives: A,b,c → d,q transformation, vector representation of 3phase variables; Induction Machine: Vector equation system on a rotating reference frame; 2-level 3-phase inverter operation: configurations, definition of Voltage Vectors, generation of Gating Signals; Closed-loop controlled Voltage Source Inverter; Vector diagrams of electric variables; ....
Teaching Methods
Lectures (hours/year in lecture theatre): 30
Assessment Methods
Written exams sessions will be scheduled in presence, with a short list of topics with multiple questions (open answers). In case, an oral integration can be proposed in order to reach a sufficient score. The interest displayed during the lectures can contribute to the final evaluation.
Texts
Here follows a list of textbooks free downloadable and related to EDs. Additional material (notes, books, slides, links, technical papers, handbooks and so on) will be given during the lectures.
N. Mohan, T.M. Undeland, W.P. Robbins - Power Electronics: Converters, Applications and Design - John Wiley & Sons, 2003
Bimal K. Bose - Power electronics and Motor Drives - Elsevier 2006
T.J.E. Miller - Brushless Permanent-Magnet and Reluctance Motor Drives - Clarendon Press, 1989
Piotr Wach - Dynamics and Control of Electrical Drives - Springer, 2011
W. Leonhard - Control of Electrical Drives, Springer-Verlag, 2001
A.M. Trzynadlowski - Control of Induction Motors - Academic Press, 2000
The recordings of th online lecture of the academic year 2020/21 are also still available on Kiro
Contents
A) Field Oriented Control for induction machines: 1) rotor flux orientation, 2) control procedure, 3) direct/indirect control, 4) current control and decoupling of variables; B) Permanent Magnet Synchronous Machines (a.c. Brushless Drives): 1) basic construction characteristics (surface-mounted and interior permanent magnets), 2) electrical equation and torque generation, 3) dq axis model and torque control, 4) constant-torque operation range and Maximum Torque Per Ampere control. C) Field-Weakening Operation: Diagrams and operation modes for IM and BL machines.
Course Language
English
More information
For any further information, please contact Prof. Bassi via email: ezio.bassi@unipv.it
