Davidson, J.N., Stone, D.A., Foster, M.P. et al. (1 more author) (2016) Real-time temperature estimation in a multiple device power electronics system subject to dynamic cooling. IEEE Transactions on Power Electronics, 31 (4). pp. 2709-2719. ISSN 0885-8993
Abstract
This paper presents a technique to estimate the temperature of each power electronic device in a thermally coupled, multiple device system subject to dynamic cooling. Using a demonstrator system, the thermal transfer impedance between pairs of devices is determined in the frequency domain for a quantised range of active cooling levels using a technique based on pseudorandom binary sequences. The technique is illustrated by application to the case temperatures of power devices. For each cooling level and pair of devices, a sixth order digital IIR filter is produced which can be used to directly estimate temperature from device input power. When the cooling level changes, the filters in use are substituted and the internal states of the old filters are converted for use in the new filter. Two methods for filter state conversion are developed—a computationally efficient method which is suited to infrequent changes in power dissipation and cooling, and a more accurate method which requires increased memory and processing capacity. Results show that the temperature can be estimated with low error using a system which is suitable for integration on an embedded processor.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Authors. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ |
Keywords: | Estimation; IIR digital filters; Temperature; Pseudonoise processes; Thermal variables measurement |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 05 Nov 2015 15:01 |
Last Modified: | 30 Nov 2016 17:37 |
Published Version: | https://doi.org/10.1109/TPEL.2015.2443034 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/TPEL.2015.2443034 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:88235 |