GIULII CAPPONI FABIO
(programma)
DYNAMIC ANALYSIS AND CONTROL OF AC MACHINES (6 Credits)
1. Introduction on electric drives (1 credit)
Transducers
2. DC Drives (1 credit)
Armature voltage and excitation flux regulation
Dynamic model of DC machines
DC drive control schemes
Synthesis of the current regulator
Flux weakening control
3. Permanent Magnet Synchronous Motor (PMSM) drives (2 credits)
Classification
Coordinate transformations: arbitrary reference frame
Coordinate transformations: the rotating vector
Brushless ac drives: mathematical model
Brushless ac drives: control schemes
Brushless ac drives: constant power speed range (field weakening)
4. Induction motor (IM) drives (2 credits)
Operating principle of the IM
Dynamic model of the IM
Direct and indirect vector control: steady state analysis
Transient analysis of IM under vector control
Indirect vector control schemes
Direct vector control schemes
Flux observers
CONTROL OF ELECTROMECHANICAL SYSTEMS (3 Credits)
1. Speed control
Basic structure of speed-controlled systems
2. The speed controller with proportional action
Open-loop and closed-loop transfer functions
Load rejection
Variable reference tracking
Frictional load
3. The speed controller with proportional and integral (PI) action
Open-loop and closed-loop transfer functions
Load rejection
Step response
PI speed controller with relocated proportional action
Variable reference tracking
Feedforward compensation
4. PI speed controller with delays in torque actuation
Delays in torque actuation
Current controllers
Tuning of PI controllers
5. Digital speed control
Discrete-time implementation of speed controllers
Anti-windup mechanism
 DYNAMIC ANALYSIS AND CONTROL OF AC MACHINES
1. W. Leonhard - “CONTROL OF ELECTRICAL DRIVES” - Ed. Springer-Verlag
2. P. C. Krause, O. Wasynczuk, S. D. Sudhoff - “ANALYSYS OF ELECTRIC MACHINERY” - Ed. IEEE Press
3. P. Pillay et alii - “PERFORMANCE AND DESIGN OF PERMANENT MAGNET AC MOTOR DRIVES” - IEEE Industry Applications Society Tutorial Course, 1991
4. D. W. Novotny, T. A. Lipo - “VECTOR CONTROL AND DYNAMICS OF AC DRIVES” - Ed. Oxford Science Publications
CONTROL OF ELECTROMECHANICAL SYSTEMS
S. N. Vukosavic. Digital Control of Electrical Drives. Springer, 2007
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