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Observer based dynamic adaptive cooling system for power modules

Wang, Xiang; Castellazzi, Alberto; Zanchetta, Pericle


Xiang Wang

Alberto Castellazzi


This paper presents an advanced dynamic cooling strategy for multi-layer structured power electronic modules. An observer based feedback controller is proposed to reduce a power device or module's thermal cycle amplitude during operation, with the aim of improving reliability and lifetime. The full-state observer design is based on a developed Cauer type thermal model. The observer enables estimation and control of the temperature at reliability critical locations only measuring one accessible location. This makes the method particularly powerful and suitable for application in power systems. The designed strategy is confirmed experimentally. Although the experiment is developed for a specific application scenario, the proposed strategy is of general validity.


Wang, X., Castellazzi, A., & Zanchetta, P. (2016). Observer based dynamic adaptive cooling system for power modules. Microelectronics Reliability, 58,

Journal Article Type Article
Acceptance Date Jan 18, 2016
Online Publication Date Mar 3, 2016
Publication Date Mar 1, 2016
Deposit Date May 18, 2016
Publicly Available Date May 18, 2016
Journal Microelectronics Reliability
Print ISSN 0026-2714
Electronic ISSN 0026-2714
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 58
Keywords Cooling; reliability; temperature control; thermal stress; thermal cycle; lifetime
Public URL
Publisher URL


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