DocumentCode :
1369994
Title :
Analysis of on- and off-line optimized predictive current controllers for PWM converter systems
Author :
Kolar, Johann W. ; Ertl, Hans ; Zach, Franz C.
Author_Institution :
Power Electron. Sect., Tech. Univ. of Vienna, Austria
Volume :
6
Issue :
3
fYear :
1991
fDate :
7/1/1991 12:00:00 AM
Firstpage :
451
Lastpage :
462
Abstract :
The problem of on-off current control for coupling of a DC voltage system with a three-phase (polyphase) AC voltage system via a pulsewidth modulated (PWM) converter is discussed. The AC voltage represents either the counter EMF (electromotive force) of an AC machine or the three-phase power supply system (mains). The following control concepts are investigated by digital computer simulation: a simple hysteresis controller; a predictive controller with online optimization (optimization with respect to minimum switching frequency); and a controller based on offline optimization (using a switching table). It is shown that the relatively involved predictive controller can be replaced by a switching table of very limited size. For rating of the treated controllers the switching frequency as a function of the RMS voltage of the AC system and the other system parameters is used
Keywords :
digital simulation; electric current control; power convertors; power engineering computing; predictive control; pulse width modulation; AC voltage system; DC voltage system; PWM converter systems; counter EMF; digital computer simulation; hysteresis controller; offline optimization; on-off current control; online optimization; optimized predictive current controllers; power supply system; three-phase; AC machines; Analog-digital conversion; Counting circuits; Current control; Power supplies; Pulse width modulation; Pulse width modulation converters; Pulsed power supplies; Switching frequency; Voltage;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/63.85913
Filename :
85913
Link To Document :
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