Study on control strategy of parallel processing UPS systems

被引：0

作者：

Hou, Y ^{[1
]}

Jiang, XH ^{[1
]}

Jiang, JG ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

POWERCON 2002: INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY, VOLS 1-4, PROCEEDINGS | 2002年

关键词：

UPS; parallel processing; transient; oscillation; feed forward control;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Compared with the conventional two-stage conversion UPS systems, the parallel processing UPS systems have several advantages such as compact structure, lower losses and improved power factor. But there is a significant problem of un-damped (or damped slowly) dc transient components of supply currents due to the system structure with only a link reactor between source and load. Based on analysis of the mechanism of the problem, this paper proposes an improved control method to solve the problem. With compensating the pre-calculated steady state supply currents, rather than the transient ones, the dc transient components of supply currents can be eliminated quickly. The simulation results conducted with PSCAD/EMTDC are given to verify the validity of the method.

引用

页码：2280 / 2284

页数：5

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