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Life Evaluation of DC-DC Power Supply Considering Coupling Effect of Space Radiation and Temperature
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Yiming ZONG  Student Member, CPSS1, 2, Yanhong FANG1, 2, Bin SUO1, 2
Journal of Power Supply | 2026, 24(8) : 339 - 346
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Journal of Power Supply | 2026, 24(8): 339-346
• Fault Diagnosis and Reliability •
Life Evaluation of DC-DC Power Supply Considering Coupling Effect of Space Radiation and Temperature
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Yiming ZONG  Student Member, CPSS1, 2, Yanhong FANG1, 2, Bin SUO1, 2
Affiliations
  • 1.School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China
  • 2.Research Center for Complex Environmental Equipment Reliability, Southwest University of Science and Technology, Mianyang 621010, China
Published: 2026-08-30 doi: 10.13234/j.issn.2095-2805.2026.8.339
Outline
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DC-DC power supplies are simultaneously affected by long-term low-dose-rate radiation and temperature in a space environment. At present, there is no space radiation-temperature coupling effect acceleration model, and how to evaluate the life of DC-DC power supplies under the coupling effect is a challenge. A life evaluation method based on a generalized coupled acceleration model and a response surface acceleration model is proposed. First, the particle swarm optimization algorithm is used to select the optimal acceleration model and estimate its parameters. Then, the final coupling effect acceleration model is established through model averaging. Finally, a certain type of DC-DC power supply is taken as the object, the coupling relationship analysis of acceleration performance degradation data obtained under different stress combinations is carried out, and the proposed method is used to evaluate the life of DC-DC power supply under the coupling effect, thus verifying the effectiveness of the novel method.

DC-DC power supply  /  accelerated degradation test  /  space radiation-temperature coupling effect  /  life evaluation
宗怡明中国电源学会学生会员, 方艳红, 锁斌. 考虑空间辐射-温度耦合效应的DC-DC电源寿命评估. 电源学报, 2026 , 24 (8) : 339 -346 . DOI: 10.13234/j.issn.2095-2805.2026.8.339
Yiming ZONG, Yanhong FANG, Bin SUO. Life Evaluation of DC-DC Power Supply Considering Coupling Effect of Space Radiation and Temperature[J]. Journal of Power Supply, 2026 , 24 (8) : 339 -346 . DOI: 10.13234/j.issn.2095-2805.2026.8.339
Funding
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  • National Natural Science Foundation of China(U1830133)
  • Sichuan High Efficiency Power Conversion Technology Engineering Research Center Fund Project(JS20231000536)
  • Central Government Guides Local Funds for Science and Technology Development(2023ZYDF022)
Appendix
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Year 2026 volume 24 Issue 8
33
5
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.8.339
  • Receive Date：2024-12-04
  • Online Date：2026-10-29
  • Published：2026-08-30
Article Data
Affiliations
History
  • Received：2024-12-04
  • Revised：2025-01-03
  • Accepted：2025-01-09
Funding
National Natural Science Foundation of China(U1830133)
Sichuan High Efficiency Power Conversion Technology Engineering Research Center Fund Project(JS20231000536)
Central Government Guides Local Funds for Science and Technology Development(2023ZYDF022)
Affiliations
    1.School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China
    2.Research Center for Complex Environmental Equipment Reliability, Southwest University of Science and Technology, Mianyang 621010, China
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光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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