Title :
A high-power multi transistor-inverter uninterruptable power supply system
Author :
Joachim Holtz;Wolfgang Lotzkat;Karl-Heinz Werner
Author_Institution :
University of Wuppertal, Postfach 100 127, West Germany
fDate :
6/1/1986 12:00:00 AM
Abstract :
The active and reactive load distribution between n paralleled single-phase UPS inverters is equalized by virtue of n − 1 load sharing control loops. The approach permits the construction of UPS systems of any desired power rating at maximum utilization of the power components. The method of harmonic cancellation decreases the switching frequency of the power devices while maintaining good dynamic performance. The design details of a 45 kVA UPS inverter system with 150 % steady-state overload capability are presented. The performance at various operating conditions is illustrated by oscillograms.
Keywords :
"Switches","Inverters","Uninterruptible power systems","Pulse width modulation","Magnetic circuits","Surges"
Conference_Titel :
Power Electronics Specialists Conference, 1986 17th Annual IEEE
Print_ISBN :
978-9-9963-2327-0
DOI :
10.1109/PESC.1986.7415576
