DC bus voltage control for a distributed power system

被引：262

作者：

Karlsson, P ^{[1
]}

Svensson, J ^{[1
]}

机构：

[1] Lund Univ, Dept Ind Elect Engn & Automat, SE-22100 Lund, Sweden

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2003年 / 18卷 / 06期

关键词：

converters; impedance; losses; power cables; power distribution; power semiconductor devices; stability;

D O I：

10.1109/TPEL.2003.818872

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper addresses voltage control of distributed dc power systems. DC power systems have been discussed as a result of the introduction of renewable, small-scale power generation units. Also, telecommunication power systems featuring UPS properties might benefit from a broader introduction of dc power systems. Droop control is utilized to distribute the load between the source converters. In order to make the loading of the source converters equal, in per unit, the voltage control algorithm for each converter has to be designed to act similar. The dc side capacitor of each converter, needed for filtering, is also determined as a consequence. The root locus is investigated for varying dc bus impedance. It is found that the risk of entering converter over-modulation is a stronger limitation than stability, at least for reasonable dc bus cable parameters. The stationary and dynamic properties during load variations are also investigated.

引用

页码：1405 / 1412

页数：8

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