Complete ZVS Analysis in Dual Active Bridge

Yan, Yu; Gui, Handong; Bai, Hua

doi:10.1109/tpel.2020.3011470

Cited by 72 publications

(30 citation statements)

References 11 publications

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“…Based on the above analysis for the operating condition M>1, All-ZVS modulation with quasi optimal RMS current control of the inductor can be realized by using the proposed method in the whole power range. The corresponding solutions for different power range are in (17) and (21).…”

Section: ) Zvs Control Strategy In Low Power Levelmentioning

confidence: 99%

Globally Unified ZVS and Quasi-Optimal Minimum Conduction Loss Modulation of DAB Converters

Hang

Zheng

et al. 2022

IEEE Trans. Transp. Electrific.

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Due to the quick development of wide bandgap power devices, the power density of the converters is expected to be much higher. In order to increase the power density and efficiency of the DAB converter, especially the efficiency under light load, a quasi-optimal current root-mean-square (RMS) control strategy to achieve All-ZVS is proposed by taking the inductor RMS current optimization algorithm into account in this paper. First the constraint conditions for realizing ZVS of all switching devices under different operating modes are concluded by analyzing the switching mode and the working principle of the DAB converter under the triple phase shift (TPS) modulation. The ZVS domain for All-ZVS operation in each operating mode is further obtained. Then, the GOC strategy is combined with the ZVS condition to derive the novel modulation for all operating modes. Based on this scheme, the switching conditions of all switches can be improved, and the efficiency of the DAB system under the light load is optimized. With ZVS operation, the switching frequency can be raised. Finally, a GaN HEMT based prototype of DAB converter was built and the switching frequency is 200kHz, the effectiveness of the proposed modulation scheme was verified by the experimental results.

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Section: ) Zvs Control Strategy In Low Power Levelmentioning

confidence: 99%

Globally Unified ZVS and Quasi-Optimal Minimum Conduction Loss Modulation of DAB Converters

Hang

Zheng

et al. 2022

IEEE Trans. Transp. Electrific.

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“…Note that this happens for full-bridge converters (regardless the switches are MOSFETs or IGBTs) where 𝐿 𝑚 is in charge of the ZVS. The energy requirement is different for half or full bridges where 𝐿 𝑚 is clamped to the secondary-side bus voltage, so there is energy transferred to the secondary source during 𝑡 𝑣𝑟 [17], [18], even if 𝐸 𝑑𝑖𝑠 = 0 is assumed [15]. In these last cases, the series inductance is the one that participates in the ZVS.…”

Section: B Turn-on Zero-voltage Switchingmentioning

confidence: 99%

Zero-Loss Switching in DC-DC Series Resonant Converters under Discontinuous Conduction Mode

Elizondo

Barrios

Sanchís

2021

2021 IEEE International Conference on Environment and Electrical Engineering and 2021 IEEE Industrial and Commercial Power Syst

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Many thriving applications where isolation is required, such as traction and EV fast charging, implement solid-state transformers (SST). Half-cycle discontinuousconduction-mode series resonant converters (HC-DCM-SRC) are suitable for these applications. The focus of this paper is to perform a comprehensive approach to HC-DCM-SRC and provide straight-forward requirements in order to ensure zeroloss switching (ZLS) of semiconductors. In addition, these requirements can be expressed as design boundaries for the transformer. Finally, the paper shows that, due to ZLS, silicon devices may have larger power capability than silicon-carbide switches. Therefore, IGBTs can be used instead of SiC MOSFETs, resulting in a significant cost reduction of the converter.

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“…In Kheraluwala et al, 2 the influence of capacitance on the ZVS region are describe, with a general representation of soft‐switching boundary. An analysis of ZVS considering different modulations are developed in Yan et al 20 These papers consider the switches capacitance in ZVS analysis; however, the dead time and the inductance design are not consider in those works.…”

Section: Introductionmentioning

confidence: 99%

Series inductance design of dual‐active‐bridge converter: ZVS range with practical considerations

Kirsten

Fraytag

Cúnico

et al. 2022

Circuit Theory & Apps

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Summary Zero‐voltage‐switching boundaries of dual‐active‐bridge (DAB) converter operating with phase‐shift modulation is largely studied in literature. However, several practical considerations are neglected to simplify the ZVS analysis. This paper proposes the full analysis of DAB converter ZVS range considering the switches capacitance, dead time, series inductance design, and input/output voltage variation. Three different designs of series inductance were developed. The prototypes were tested under different voltage conditions considering the whole power range. The experimental results show the considerable difference in ZVS region of the classical analysis and the proposed in this paper, proving the feasibility of the paper analysis.

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Complete ZVS Analysis in Dual Active Bridge

Cited by 72 publications

References 11 publications

Globally Unified ZVS and Quasi-Optimal Minimum Conduction Loss Modulation of DAB Converters

Globally Unified ZVS and Quasi-Optimal Minimum Conduction Loss Modulation of DAB Converters

Zero-Loss Switching in DC-DC Series Resonant Converters under Discontinuous Conduction Mode

Series inductance design of dual‐active‐bridge converter: ZVS range with practical considerations

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