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

Carsten Nesgaard; Michael Andreas E. Andersen

doi:10.1109/APEC.2004.1295845

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 language	English
Title of host publication	APEC 2004 – Nineteenth Annual IEEE Applied Power Electronics
Volume	1
Publisher	IEEE
Publication date	2004
Pages	433-442
ISBN (Print)	0-7803-8269-2
DOIs	https://doi.org/10.1109/APEC.2004.1295845
Publication status	Published - 2004
Event	19th Annual IEEE Applied Power Electronics Conference and Exposition - Anaheim, United States Duration: 22 Feb 2004 → 26 Feb 2004 Conference number: 19 http://www.apec-conf.org/2004/APEC04_Home_Page.html

Conference

Conference	19th Annual IEEE Applied Power Electronics Conference and Exposition
Number	19
Country/Territory	United States
City	Anaheim
Period	22/02/2004 → 26/02/2004
Internet address	http://www.apec-conf.org/2004/APEC04_Home_Page.html

Bibliographical note

Copyright: 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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title = "Efficiency improvement in redundant power systems by means of thermal load sharing",

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{\textquoteright}s intent to establish equal currents.",

author = "Carsten Nesgaard and Andersen, {Michael Andreas E.}",

note = "Copyright: 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 19th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2004 ; Conference date: 22-02-2004 Through 26-02-2004",

year = "2004",

doi = "10.1109/APEC.2004.1295845",

language = "English",

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booktitle = "APEC 2004 – Nineteenth Annual IEEE Applied Power Electronics",

publisher = "IEEE",

address = "United States",

url = "http://www.apec-conf.org/2004/APEC04_Home_Page.html",

}

Nesgaard, C & Andersen, MAE 2004, Efficiency improvement in redundant power systems by means of thermal load sharing. in APEC 2004 – Nineteenth Annual IEEE Applied Power Electronics. vol. 1, IEEE, pp. 433-442, 19th Annual IEEE Applied Power Electronics Conference and Exposition, Anaheim, California, United States, 22/02/2004. https://doi.org/10.1109/APEC.2004.1295845

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AU - Andersen, Michael Andreas E.

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N2 - 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.

AB - 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.

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DO - 10.1109/APEC.2004.1295845

M3 - Article in proceedings

SN - 0-7803-8269-2

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SP - 433

EP - 442

BT - APEC 2004 – Nineteenth Annual IEEE Applied Power Electronics

PB - IEEE

T2 - 19th Annual IEEE Applied Power Electronics Conference and Exposition

Y2 - 22 February 2004 through 26 February 2004

ER -

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

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