Lookup NU author(s): Professor Volker Pickert
This is the authors' accepted manuscript of an article that has been published in its final definitive form by IEEE, 2018.
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This paper proposes a novel health sensitive parameter, called the gate-emitter prethreshold voltage VGE(pre-th), for detecting IGBT chip failures in multichip IGBT power modules. The proposed method has been applied in an IGBT gate driver and measures the VGE at a fixed time instant of the VGE transient before the threshold voltage occurs. To validate the proposed method, theoretical analysis and practical results for a 16-chip IGBT power module are presented in the paper. The results show a 500 mV average shift in the measured VGE(pre-th ) for each IGBT chip failure.
Author(s): Mandeya R, Chen C, Pickert V, Naayagi RT, Ji B
Publication type: Article
Publication status: Published
Journal: IEEE Transactions on Power Electronics
Print publication date: 01/09/2019
Online publication date: 30/11/2018
Acceptance date: 19/11/2018
Date deposited: 22/11/2018
ISSN (print): 0885-8993
ISSN (electronic): 1941-0107
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