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Quasi Single-stage DC-DC Conversion Method with Partial Power Active Regulation Based on Split-sigma Structure
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Liangdong SHI1, Yujie CHENG12, Fan YANG3, Hongfei WU1
Journal of Power Supply | 2024, 22(2) : 98 - 105
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Journal of Power Supply | 2024, 22(2): 98-105
• DC-DC Converters •
Quasi Single-stage DC-DC Conversion Method with Partial Power Active Regulation Based on Split-sigma Structure
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Liangdong SHI1, Yujie CHENG12, Fan YANG3, Hongfei WU1
Affiliations
  • 1 School of Automation Nanjing University of Aeronautics and Astronautics Nanjing 211106 China
  • 2 Nanjing Electronic Devices Institute Nanjing 211106 China
  • 3 College of Automation Nanjing University of Posts and Telecommunications Nanjing 210023 China
Published: 2024-03-30 doi: 10.13234/j.issn.2095-2805.2024.2.98
Outline
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Aimed at the low conversion efficiency and all the load power that needs to be processed by converters at different stages in the two-stage architecture of a DC transformer cascaded PWM converter, a quasi single-stage DC-DC conversion method with partial power active regulation based on a split-sigma structure is proposed. By splitting the output port of the DC transformer into two ports, the power of one port is directly transmitted to load without being processed by the back-stage PWM converter, thus realizing the quasi single-stage power conversion equivalently. In addition, the power capacity and loss of the PWM converter are effectively reduced, and the system efficiency is improved. The principle and circuit implementation method for the split-sigma structure are analyzed in detail, and the principle and characteristics of system output voltage regulation are also studied. One of the circuits is taken as an example, and its working principle, voltage regulation characteristics and design method for key parameters are analyzed. Finally, experimental results verified the effectiveness and correctness of the proposed scheme.

Dual-output DC transformer  /  split-sigma structure  /  quasi single-stage  /  DC-DC conversion
Liangdong SHI, Yujie CHENG, Fan YANG, Hongfei WU. Quasi Single-stage DC-DC Conversion Method with Partial Power Active Regulation Based on Split-sigma Structure[J]. Journal of Power Supply, 2024 , 22 (2) : 98 -105 . DOI: 10.13234/j.issn.2095-2805.2024.2.98
Funding
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  • National Natural Science Foundation of China(52122708)
  • Natural Science Foundation of Jiangsu Province of China(BK20200017)
  • Qinglan Project of Jiangsu Province of China
Appendix
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Year 2024 volume 22 Issue 2
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319
126
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Article Info
doi: 10.13234/j.issn.2095-2805.2024.2.98
  • Receive Date：2022-03-11
  • Online Date：2025-07-21
  • Published：2024-03-30
Article Data
Affiliations
History
  • Received：2022-03-11
  • Revised：2022-04-13
  • Accepted：2022-04-19
Funding
National Natural Science Foundation of China(52122708)
Natural Science Foundation of Jiangsu Province of China(BK20200017)
Qinglan Project of Jiangsu Province of China
Affiliations
    1 School of Automation Nanjing University of Aeronautics and Astronautics Nanjing 211106 China
    2 Nanjing Electronic Devices Institute Nanjing 211106 China
    3 College of Automation Nanjing University of Posts and Telecommunications Nanjing 210023 China
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https://castjournals.cast.org.cn/joweb/dyxb/EN/10.13234/j.issn.2095-2805.2024.2.98
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