Analysis and Suppression Method of High-Frequency Oscillation in Parallel DC-DC Converter System
Parallel DC-DC converter system (PDCS) is widely employed in various scenarios due to its high controllability and redundancy. However, the high-frequency oscillation (HFO) in PDCS, which arises from the interactions among power electronic devices, poses a significant threat to system stability and urgently needs to be addressed. This paper investigates the mechanism of HFO using impedance-based method, develops an equivalent series RLC circuit in the high-frequency band to explain the cause of instability, and accordingly proposes an oscillation suppression strategy by reshaping the output impedance of the converter. Simulation tests are carried out to confirm the validity of the analysis and the proposed strategy.
Authors
- Xinchun Lin (ORCID: https://orcid.org/0000-0001-5691-4782)
- Chenyang Xie
- Jing Zhou (ORCID: https://orcid.org/0000-0002-0252-2588)
- Xiao Huo (ORCID: https://orcid.org/0000-0003-0287-5196)
- Tianyu Fang
- Zekai Kang
- Jiayan Zhang (ORCID: https://orcid.org/0000-0003-0930-6236)
Institutions
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology
- Huazhong University of Science and Technology (CN)
Publication Details
- Published
- 2025-03-28
- DOI
- https://doi.org/10.1109/aeees64634.2025.11019381
- Primary Topic
- Microgrid Control and Optimization
- Type
- article
- Field-Weighted Citation Impact
- 0.00