Title :
Experiences with UPSes in active stand-by operation
Author :
Mickal, Hermann ; Tappeiner, Hermann
Author_Institution :
Siemens AG, Erlangen, West Germany
Abstract :
The concept referred to as a triport of a utility-interactive UPS (uninterruptible power supply) is explained. It has a simple and cost-effective structure and enables a low-cost UPS to be designed with all required UPS features, particularly for single-phase UPSs in the 1-10 kVA power range. The different features in comparison to traditional UPSs are briefly discussed, e.g. voltage and frequency tolerance and utility failures. Results and experience with field operation are illustrated by oscillograms and diagrams
Keywords :
uninterruptible power supplies; 1 to 10 kVA; frequency tolerance; uninterruptible power supply; utility-interactive UPS; voltage tolerance; Batteries; Control systems; Costs; Feeds; Frequency synchronization; Inductance; Inverters; Switches; Uninterruptible power systems; Voltage control;
Conference_Titel :
Telecommunications Energy Conference, 1989. INTELEC '89. Conference Proceedings., Eleventh International
Conference_Location :
Florence
DOI :
10.1109/INTLEC.1989.88334
