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A Thermal Enclosure Model for Inverters

Gulur, Srinivas and Karuppaswamy, Arun B and John, Vinod (2016) A Thermal Enclosure Model for Inverters. In: IEEE International Transportation Electrification Conference (ITEC), AUG 27-29, 2015, Chennai, INDIA.

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Design of a suitable thermal model, inclusive of the enclosure or cabinet, is an integral part of power electronic thermal management. This stems from the fact that power losses in an inverter may cause severe temperature rise in the enclosed cabinet, causing damage to the inverter switches or components. A thermal enclosure model for a 3f, back-to-back inverter topology rated 24 kVA, kept in an enclosure having dimensions 1.524x1.066x1.828 cubic metre is presented. An enclosure air temperature calculation algorithm has been proposed to calculate the enclosure air temperature in steady state when power losses in the inverters and enclosure material and dimensions are the only known parameters. Effects of the enclosure air temperature on the heat-sinks and switches of the back to back inverter have also been investigated for the above mentioned inverter topology. The enclosure air temperature is calculated with an error less than 3%.

Item Type: Conference Proceedings
Publisher: IEEE
Additional Information: Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Keywords: thermal model of enclosure; thermal model of inverter; enclosure/cabinet air temperature; heat-sink temperature; IGBT junction temperature
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 16 Jun 2016 05:38
Last Modified: 16 Jun 2016 05:38
URI: http://eprints.iisc.ac.in/id/eprint/54024

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