Reliability analysis and performance degradation of a boost converter

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Publication Type pre-print
School or College College of Engineering
Department Electrical & Computer Engineering
Creator Khan, Faisal Habib
Other Author Alam, Mohammed K.
Title Reliability analysis and performance degradation of a boost converter
Date 2014-01-01
Description In general, power converters are operated in closed-loop systems, and any characteristic variations in one component will simultaneously alter the operating point of other components, resulting in a shift in overall reliability profile. This interdependence makes the reliability of a converter a complex function of time and operating conditions; therefore, the application may demand periodic replacement of converters to avoid downtime and maintenance cost. By knowing the present state of health and the remaining life of a power converter, it is possible to reduce the maintenance cost for expensive high-power converters. This paper presents a reliability analysis for a boost converter, although this method could be used to any power converter being operated using closed-loop controls. Through the conducted study, it is revealed that the reliability of a boost converter having control loops degrades with time, and this paper presents a method to calculate time-varying reliability of a boost converter as a function of characteristic variations in different components in the circuit. In addition, the effects of operating and ambient conditions have been included in the reliability model as well. It was found that any increase in the ON-state resistance of the MOSFET or equivalent series resistance of the output capacitor decreases the overall reliability of the converter. However, any variation in the capacitance has a more complex impact on the converter's reliability. This paper is a step forward to the power-converter reliability analysis because the cumulative effect of multiple degraded components has been considered in the reliability model.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Volume 50
Issue 6
First Page 3986
Last Page 3994
Language eng
Bibliographic Citation Alam, M. K., & Khan, F. H. (2014). Reliability analysis and performance degradation of a boost converter. IEEE Transactions on Industry Applications, 50(6), 3986-94.
Rights Management (c) 2014 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 1,180,125 bytes
Identifier uspace,19129
ARK ark:/87278/s6ps153f
Setname ir_uspace
ID 712760
Reference URL https://collections.lib.utah.edu/ark:/87278/s6ps153f
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