期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 37, 期 8, 页码 8757-8761出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2022.3150895
关键词
Bridge circuits; Force; Dielectrics; Hardware; Steady-state; Modulation; Medium voltage; Frequency modulation; high-voltage series low-voltage parallel (HSLP); interlink; microgrid
资金
- National Natural Science Foundation of China [52007096, 51877117]
- Delta Power Electronics Research and Education Development Program [DREM2019005]
A novel bridge-to-bridge independent control method is proposed for high-voltage series low-voltage parallel modular DAB interlinking converters in medium-voltage dc applications. This control method achieves full modularity of each side in the converter without the need for cross-bridge transmission of signals, and it offers benefits such as electromagnetic compatibility, insulation design, and voltage sharing.
In dual-active-bridge (DAB) converters, the driving-synchronization signal is supposed to be required to be transmitted across the primary bridge and the secondary bridge to realize a phase shift for power flow. In this letter, a novel bridge-to-bridge independent ((BI)-I-2) control method is proposed. In this control method, cross-bridge transmission of sampling/driving signals is not required. Thus, full modularity of each side in the DAB converter was realized. (BI)-I-2 control is suitable for high-voltage series low-voltage parallel (HSLP) modular DAB interlinking converter in medium-voltage dc applications because: first, the bridge-level modularity of (BI)-I-2 control benefits electromagnetic compatibility and insulation design with the HSLP connection; second, (BI)-I-2 control features series-side voltage sharing; and third, (BI)-I-2 control can adapt for various operation modes of microgrids.
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