Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2008-05-02
2010-11-02
Dunn, Drew A (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
Reexamination Certificate
active
07826985
ABSTRACT:
A system and method for estimating a condition of a power module is provided. In accordance with an embodiment, a motor controller may be maintained by tracking a total proportion of power module life expended by a power module in a variable frequency motor controller based on a minimum junction temperature or a mean junction temperature and a junction temperature change, and indicating when the power module is estimated to fail.
REFERENCES:
patent: 6634236 (2003-10-01), Mars
patent: 2005/0071090 (2005-03-01), Katou
M. Held, et al.; “Fast Power Cycling Test for IBGT Modules in Traction Application”; IEEE (1997), 6 pgs.
Wei Lixiang
Weiss Bruce W.
Cherry Stephen J
Dunn Drew A
Fletcher Yoder LLP
Kuszewski Alexander R.
Miller John M.
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