Efficiency improvement in redundant power systems by means of thermal load sharing

Carsten Nesgaard, Michael Andreas E. Andersen

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Abstract

The demand for higher output currents at ever lower voltage levels is often solved by paralleling multiple converters. Provided redundancy is implemented this technique, besides being relatively easy to implement, has the advantage of improving the overall system reliability. Also, the parallel-connection concept forms the basis of a very cost-effective power system design, since the entire system often can be realized using off-the-shelf units. This paper verifies experimentally that the use of the thermal load sharing technique, proposed in [1], not only increases the overall system reliability but also has a positive impact on the system efficiency. The latter aspect is achieved by redistributing the current throughput of each converter, which in turn results in equal thermal conditions as opposed to the current sharing technique’s intent to establish equal currents.
Original languageEnglish
Title of host publicationAPEC 2004 – Nineteenth Annual IEEE Applied Power Electronics
Volume1
PublisherIEEE
Publication date2004
Pages433-442
ISBN (Print)0-7803-8269-2
DOIs
Publication statusPublished - 2004
Event19th Annual IEEE Applied Power Electronics Conference and Exposition - Anaheim, CA, United States
Duration: 22 Feb 200426 Feb 2004
Conference number: 19
http://www.apec-conf.org/2004/APEC04_Home_Page.html

Conference

Conference19th Annual IEEE Applied Power Electronics Conference and Exposition
Number19
CountryUnited States
CityAnaheim, CA
Period22/02/200426/02/2004
Internet address

Bibliographical note

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Cite this

Nesgaard, C., & Andersen, M. A. E. (2004). Efficiency improvement in redundant power systems by means of thermal load sharing. In APEC 2004 – Nineteenth Annual IEEE Applied Power Electronics (Vol. 1, pp. 433-442). IEEE. https://doi.org/10.1109/APEC.2004.1295845