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Energies 2017, 10(2), 189; doi:10.3390/en10020189

On-Line Junction Temperature Monitoring of Switching Devices with Dynamic Compact Thermal Models Extracted with Model Order Reduction

1
Department of Electrical Engineering and Information Technology, University Federico II, via Claudio 21, 80125 Naples, Italy
2
Department of Electronics, Information, and Bioengineering, Politecnico di Milano, 20133 Milan, Italy
3
School of Electronic, Electrical and Systems Engineering, University of Birmingham, Birmingham B15 2TT, UK
*
Author to whom correspondence should be addressed.
Received: 6 September 2016 / Revised: 20 January 2017 / Accepted: 24 January 2017 / Published: 8 February 2017
(This article belongs to the Special Issue Semiconductor Power Devices)
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Abstract

Residual lifetime estimation has gained a key point among the techniques that improve the reliability and the efficiency of power converters. The main cause of failures are the junction temperature cycles exhibited by switching devices during their normal operation; therefore, reliable power converter lifetime estimation requires the knowledge of the junction temperature time profile. Since on-line dynamic temperature measurements are extremely difficult, in this work an innovative real-time monitoring strategy is proposed, which is capable of estimating the junction temperature profile from the measurement of the dissipated powers through an accurate and compact thermal model of the whole power module. The equations of this model can be easily implemented inside a FPGA, exploiting the control architecture already present in modern power converters. Experimental results on an IGBT power module demonstrate the reliability of the proposed method. View Full-Text
Keywords: real-time temperature estimation; Dynamic Compact Thermal Models (DCTMs); Model Order Reduction (MOR); converter failures real-time temperature estimation; Dynamic Compact Thermal Models (DCTMs); Model Order Reduction (MOR); converter failures
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Di Napoli, F.; Magnani, A.; Coppola, M.; Guerriero, P.; D’Alessandro, V.; Codecasa, L.; Tricoli, P.; Daliento, S. On-Line Junction Temperature Monitoring of Switching Devices with Dynamic Compact Thermal Models Extracted with Model Order Reduction. Energies 2017, 10, 189.

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