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DC Energy-consuming Device and Its Hybrid Switching Control Strategy Based on Novel Submodule
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Sui PENG1, Feng LI1, Zuohong LI1, Keyan PAN  Student Member, CPSS2, Zijun REN  Student Member, CPSS2, Xiaohui QU  Member, CPSS2
Journal of Power Supply | 2026, 24(3) : 203 - 211
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Journal of Power Supply | 2026, 24(3): 203-211
• Power Electronic Dominated Power Systems •
DC Energy-consuming Device and Its Hybrid Switching Control Strategy Based on Novel Submodule
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Sui PENG1, Feng LI1, Zuohong LI1, Keyan PAN  Student Member, CPSS2, Zijun REN  Student Member, CPSS2, Xiaohui QU  Member, CPSS2
Affiliations
  • 1.Grid Planning and Research Center, Guangdong Power Grid Corporation, Guangzhou 510000, China
  • 2.School of Electrical Engineering, Southeast University, Nanjing 210096, China
Published: 2026-03-30 doi: 10.13234/j.issn.2095-2805.2026.3.203
Outline
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The short-circuit and phase failure of a DC flexible offshore wind power transmission system at the receiving end will generate excess power, leading to an incremental voltage of DC bus. One of the effective methods to solve this issue is adding DC energy-consuming devices. To reduce the volume and cost of DC energy-consuming devices, a DC energy-consuming device based on a novel submodule and the corresponding hybrid switching control strategy are proposed. The proposed control strategy combines the advantages of step switching control and cyclic switching control schemes, which can effectively reduce the power impact on the system caused by the step change in excess power and simplify the topology of the new submodule. Meanwhile, the problems of operation imbalance and unequal heat dissipation among submodules can be solved. A design method for the parameters of electrical components in the DC energy-consuming device is also given, and a simulation model of the proposed DC energy-consuming device is built. Simulation results verify the effectiveness and feasibility of the topology of the proposed novel DC energy-consuming device and its hybrid switching control strategy.

Offshore wind power  /  flexible DC power transmission  /  DC energy-consuming device  /  novel submodule  /  hybrid switching control
彭穗, 李峰, 李作红, 潘柯言中国电源学会学生会员, 任子俊中国电源学会学生会员, 曲小慧中国电源学会会员. 基于新型子模块的直流耗能装置及复合投切控制策略. 电源学报, 2026 , 24 (3) : 203 -211 . DOI: 10.13234/j.issn.2095-2805.2026.3.203
Sui PENG, Feng LI, Zuohong LI, Keyan PAN, Zijun REN, Xiaohui QU. DC Energy-consuming Device and Its Hybrid Switching Control Strategy Based on Novel Submodule[J]. Journal of Power Supply, 2026 , 24 (3) : 203 -211 . DOI: 10.13234/j.issn.2095-2805.2026.3.203
Funding
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  • Technology Project of China Southern Power Grid Co., Ltd.(037700KK52220013)
  • National Natural Science Foundation of China(52077038)
Appendix
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Year 2026 volume 24 Issue 3
25
4
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.3.203
  • Receive Date：2023-09-12
  • Online Date：2026-10-29
  • Published：2026-03-30
Article Data
Affiliations
History
  • Received：2023-09-12
  • Revised：2023-11-21
  • Accepted：2024-01-01
Funding
Technology Project of China Southern Power Grid Co., Ltd.(037700KK52220013)
National Natural Science Foundation of China(52077038)
Affiliations
    1.Grid Planning and Research Center, Guangdong Power Grid Corporation, Guangzhou 510000, China
    2.School of Electrical Engineering, Southeast University, Nanjing 210096, China
References
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https://castjournals.cast.org.cn/joweb/dyxb/EN/10.13234/j.issn.2095-2805.2026.3.203
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