MULTI-INVERTER UPS SYSTEM WITH REDUNDANT LOAD SHARING CONTROL

被引:82
作者
HOLTZ, J
WERNER, KH
机构
[1] University of Wuppertal, Wuppertal
关键词
D O I
10.1109/41.103455
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The concept of a redundant multi-inverter uniterruptible power supply(UPS) 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 that is separately interlinked by two serial data buses through which they communicate. They establish a hierarchy among the participating blocks by defining one of the healthy inverter blocks as the master. The actual master runs the central synchronizing unit for the entire system, whereas the slave units perform the control of equal active and reactive load sharing. Operation and fault detection is experimentally exemplified in a dual inverter system having a rating of 10 kVA of redundant power.
引用
收藏
页码:506 / 513
页数:8
相关论文
共 7 条
[1]  
Holtz J., Lotzkat W., Werner K.-H., A high-power maulti transistor-inverter uninterruptable power supply system, IEEE Trans. Power Electron., 3, pp. 278-285, (1988)
[2]  
Reed J., Sharma N., Large parallel UPS systems utilizing PWM technology, Proc. Intelec Int. Telecommun. Energy Conf., pp. 282-289, (1984)
[3]  
Werner K.-H., Dynamisch hochwertige Wechselrichter zur Erzeugung sinusförmiger Ausgangsspannungen in einphasigen unterbrech-nungsfreien Stromversorgungen mit und ohne Redundanz, (1989)
[4]  
Forstbauer W., Unterbrechungsfreie Stromversorgung aus der Sicht technischer Zuverlässigkeit, Siemens-Zeitschrift, pp. 426-429, (1978)
[5]  
Schneider F.J., Brownouts and blackouts in the public power supply of the Federal Republic of Germany, Proc. Intelec Inter. Telecommun. Energy Conf., pp. 51-57, (1985)
[6]  
Kawabata T., Higashino S., Parallel operation of voltage source inverters, IEEE Trans. Industry Appl., pp. 281-287, (1988)
[7]  
Renfrew R.M., Successful interruptable power systems for computers, IEEE Trans. Industry General Appl., pp. 693-698, (1969)