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Research on ADRC-based Auxiliary Power Supply for New Energy Locomotives
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He XI  Member, CPSS1, Guo XU  Member, CPSS1, Junjian SONG2, Wenjing XU2, Mei SU1
Journal of Power Supply | 2026, 24(9) : 236 - 244
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Journal of Power Supply | 2026, 24(9): 236-244
• Transportation Electrification •
Research on ADRC-based Auxiliary Power Supply for New Energy Locomotives
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He XI  Member, CPSS1, Guo XU  Member, CPSS1, Junjian SONG2, Wenjing XU2, Mei SU1
Affiliations
  • 1.School of Automation, Central South University, Changsha 410083, China
  • 2.CRRC Dalian R&D Co., Ltd., Dalian 116052, China
Published: 2026-09-30 doi: 10.13234/j.issn.2095-2805.2026.9.236
Outline
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To achieve lightweight and high-efficiency auxiliary power supply systems, a study was conducted on high-voltage and high-power DC-DC conversion power modules tailored for the application scenarios of new energy locomotive auxiliary power supplies. A quasi-two-stage topology was proposed, consisting of an input series output parallel (ISOP) three-level Boost (TL-Boost) and a full-bridge LLC resonant circuit, suitable for high-voltage and high-power applications. The working principle of this topology was detailed, and in response to the issues with traditional proportional integral (PI) control, an active disturbance rejection control (ADRC) method was proposed, addressing the instability of output voltage due to load fluctuations. This ultimately achieved high current sharing and high-stability operation of the auxiliary power supply. A prototype was constructed, comprising two 150 kW TL-Boost+LLC resonant converters, which was validated. The experimental results demonstrated the feasibility and effectiveness of the proposed DC-DC converter and control method, bearing significant engineering implications.

Input series output parallel (ISOP)  /  LLC resonant converter  /  three-level Boost (TL-Boost)  /  auxiliary power supply  /  active disturbance rejection control (ADRC)
席赫中国电源学会会员, 许国中国电源学会会员, 宋君健, 徐文婧, 粟梅. 基于ADRC的新能源机车辅助电源研究. 电源学报, 2026 , 24 (9) : 236 -244 . DOI: 10.13234/j.issn.2095-2805.2026.9.236
He XI, Guo XU, Junjian SONG, Wenjing XU, Mei SU. Research on ADRC-based Auxiliary Power Supply for New Energy Locomotives[J]. Journal of Power Supply, 2026 , 24 (9) : 236 -244 . DOI: 10.13234/j.issn.2095-2805.2026.9.236
Funding
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  • National Key Research and Development Plan “Belt and Road” special project(2020YFE0202700)
Appendix
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Year 2026 volume 24 Issue 9
40
5
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.9.236
  • Receive Date：2024-12-28
  • Online Date：2026-10-29
  • Published：2026-09-30
Article Data
Affiliations
History
  • Received：2024-12-28
  • Revised：2025-02-17
  • Accepted：2025-03-10
Funding
National Key Research and Development Plan “Belt and Road” special project(2020YFE0202700)
Affiliations
    1.School of Automation, Central South University, Changsha 410083, China
    2.CRRC Dalian R&D Co., Ltd., Dalian 116052, China
References
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