Title :
Design approaches to supercapacitor based surge resistant UPS techniques
Author :
Kularatna, Nihal ; Tilakaratne, Lasantha ; Kumaran, Parthasaradhy Kozhiparambil
Abstract :
Time constants of supercapacitors are in the range of 100mS to tens of seconds compared to the time durations of power line transients, which are usually within a few hundred microseconds. Therefore supercapacitors should withstand short duration surges with energy values specified in IEEE C62-41 series and IEC 61400-4-5 and similar standards. After experimentally confirming this useful property of supercapacitors, new topologies for supercapacitor based surge-resistant uninterruptible power supplies were developed. Paper summarizes the approach to developing suitable topologies for surge-resistant UPS systems based on supercapacitor energy circulation techniques, despite the lower continuous DC voltage ratings of commercial supercapacitors.
Keywords :
IEEE standards; network topology; power cables; supercapacitors; surges; uninterruptible power supplies; IEC 61400-4-5 standard; IEEE C62-41 series; commercial supercapacitor; energy value; lower continuous DC voltage rating; power line transient; supercapacitor based surge resistant UPS technique; supercapacitor based surge-resistant uninterruptible power supply; supercapacitor energy circulation technique; time constant; Inverters; Supercapacitors; Surge protection; Surges; Transient analysis; Uninterruptible power systems; Supercapacitors; transient propagation; uninterruptible power supplies;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6119982
