Online Digital Implementation of Wide Voltage Range RMS-Current-Optimized Control With Voltage Balancing Capability for DAB Converter

Yang, Jiangpeng; Shu, Zeliang; Wang, Tianxiang; Xiang, Shibiao; Nie, Jianglin; Wang, Shun; Yuan, Lei; Ma, Lan

doi:10.1109/tpel.2022.3227177

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) Npc Bridges1

An Optimal Control Strategy For the Dab-based Partial Power ...1

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Cited by 4 publications

(2 citation statements)

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“…By regulating the neutral point voltage using the proposed modulation, the bipolar voltage level can be balanced. In [108], the topology is a symmetrical DAB converter with two NPC half bridge cells. The topologies in [109]- [114] are the modifications of Fig.…”

Section: ) Npc Bridgesmentioning

confidence: 99%

Review of Dual-Active-Bridge Converters With Topological Modifications

Sha

et al. 2023

IEEE Trans. Power Electron.

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Section: ) Npc Bridgesmentioning

confidence: 99%

Review of Dual-Active-Bridge Converters With Topological Modifications

Sha

et al. 2023

IEEE Trans. Power Electron.

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“…Extended-Phase-Shift Control performance [19]- [20], and minimizing root-mean-square (RMS) current [21]- [22]. Under the condition of high frequency, the effects of the output capacitors of switches can be amplified because the charging and discharging process of output capacitors are hard to be ignored due to short switching period.…”

Section: An Optimal Control Strategy For the Dab-based Partial Power ...mentioning

confidence: 99%

An Optimal Control Strategy for the DAB-Based Partial Power Converter Based on Extended-Phase-Shift Control

Gao,

Zhang,

Wang

et al. 2023

IEEE Open J. Power Electron.

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Dual active bridge (DAB) converters are extensively used due to the advantages of wide voltage regulation range and easy realization of soft switching. Besides, the concept of partial power converters (PPCs) has been widely applied to increase the converter efficiency by reducing the power actually processed by the converter. Therefore, in this paper, the DAB converter and PPC are combined. And a high frequency DAB-based PPC aiming at efficiency optimization is selected out by analyzing and comparing the characteristics of several connections. Considering the wide voltage regulation range of DAB-based PPC, the extended-phase-shift-based control strategy aiming at zero-voltage switching (ZVS) range and current stress optimization is analyzed and adopted in this paper. With the trend of high frequency for power converters, the non-ideal factors like output capacitors of switches need to be considered to improve the performance. The output capacitors are taken into consideration when analyzing the ZVS performance and the magnetizing inductor is utilized to expand ZVS range. To verify correctness of theoretical analysis, a prototype using GaN devices with 1kW rated output power and 500kHz switching frequency is built. The experimental results are consistent with the analysis.

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