Mission Profile Based System-Level Reliability Analysis of DC/DC Converters for a Backup Power Application
Open accessAbstract
Reliability analysis is an important tool for assisting the design phase of a power electronic converter to fulfill its life-cycle specifications. Existing converter-level reliability analysis methods have two major limitations: 1) being based on constant failure rate models; and 2) lack of consideration of long-term operation conditions (i.e., mission profile). Although various studies have been presented on power electronic component-level lifetime prediction based on wear-out failure mechanisms and mission profile, it is still a challenge to apply the same method to the reliability analysis of converters with multiple components. Component lifetime prediction based on associated models provides only a BXlifetime information (i.e., the time when X% items fail), but the time-dependent reliability curve is still not available. In this paper, a converter-level reliability analysis approach is proposed based on time-dependent failure rate models and long-term mission profiles. Two different methods to obtain the component-level time-to-failure are illustrated by a case study of dc/dc converters for a 5 kW fuel cell-based backup power system. The reliability analysis of the converters with and without redundancy is also performed to assist the decision making in the design phase of the fuel cell power conditioning stage.
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Advanced cooling technologies such as spray cooling and jet impingement are developed to meet the demands of the automotive industry.
“Therefore, advanced cooling technologies, such as spray cooling and jet impingement, are developed to meet the demands of the automotive industry [79].”
From Reliability of Power Electronic Systems for EV/HEV Applications (2021) · cites this paper as [79]
The Introduction discusses temperature-related reliability, and Section II mentions a coolant loop for a telecom backup fuel-cell system; neither addresses automotive cooling technologies. Searches for spray cooling, jet impingement, and automotive thermal management found no passage supporting the claim. Page numbers were unavailable in our copy. (LLM, conf=0.76)
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- Authors
- Zhou, D., Wang, H., & Blaabjerg, F.
- Affiliations
- Aalborg University (DK)
- Venue
- IEEE Transactions on Power Electronics
- Published
- 2018-09
- Volume
- 33
- Issue
- 9
- Pages
- 8030-8039
- ISSN
- 0885-8993 (ISSN-L)
- 1941-0107
- OpenAlex
- W2765240847
- Cited by
- 200
- References
- 35
- Citations by year
- 2026: 5 · 2025: 20 · 2024: 23 · 2023: 27 · 2022: 20 · 2021: 27 · 2020: 35 · 2019: 25 · 2018: 18
- FWCI
- 31.17
- Type
- journal article
- Language
- en
- Open access
- green
- vbn.aau.dk
- Locations
- IEEE Transactions on Power Electronics (publishedVersion)
- VBN Forskningsportal (Aalborg Universitet) (submittedVersion, other-oa)
- Funders
- Innovation Fund Denmark through the Advanced Power Electronic Technology and Tools Project
- Topics
- Physical Sciences › Engineering › Safety, Risk, Reliability and Quality › Reliability and Maintenance Optimization
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced DC-DC Converters
- Physical Sciences › Computer Science › Software › Software Reliability and Analysis Research
- Keywords
- DC-DC converter, mission profile, time-dependent failure rates, time to failure, redundancy, power conditioning, component lifetime prediction
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