Title :
Multi-inverter UPS system with redundant load sharing control
Author :
Holtz, Joachim ; Werner, Karl-Heinz
Author_Institution :
Wuppertal Univ., West Germany
Abstract :
The concept of a redundant multi-inverter UPS (uninterruptible power supply) system includes extended monitoring of the status and the operating conditions of all power electronic equipment. Each block of the UPS system is monitored by two independent microcomputers that process the same data. The microcomputers are part of a redundant distributed monitoring system, being separately interlinked by two serial data buses through which they communicate. They establish a hierarchy among the participating blocks, defining one of the healthy inverter blocks as the master. The actual master runs the central synchronizing unit for the entire system, while the slave units perform the control of equal active and reactive load sharing. Operation and fault detection are experimentally exemplified in a dual inverter system having a rating of 10 kVA of redundant power
Keywords :
invertors; load regulation; uninterruptible power supplies; 10 kVA; active load sharing; central synchronizing unit; dual inverter system; multi-inverter UPS system; reactive load sharing; redundant distributed monitoring system; redundant load sharing control; serial data buses; slave units; uninterruptible power supply; Centralized control; Condition monitoring; Control systems; Data buses; Fault detection; Inverters; Master-slave; Microcomputers; Power electronics; Uninterruptible power systems;
Conference_Titel :
Industrial Electronics Society, 1989. IECON '89., 15th Annual Conference of IEEE
Conference_Location :
Philadelphia, PA
DOI :
10.1109/IECON.1989.69628