A Unified Design Approach of Optimal Transient Single-Phase-Shift Modulation for Nonresonant Dual-Active-Bridge Converter With Complete Transient DC-Offset Elimination

Sun, Chuan; Jiang, Xingyue; Liu, Junwei; Cao, Lingling; Yang, Yongheng; Loo, K. H.

doi:10.1109/tpel.2022.3182966

Cited by 13 publications

(2 citation statements)

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“…SPS modulation only has one control variable. It must ensure the power transmission, which cannot easily inhibit the backflow power at the same time [17]. Although there is a study that redefined and analyzed SPS modulation to reshape DAB working modes from the perspective of underlying circuit elucidation and elaborating the method of the SPS modulation only has one control variable.…”

Section: Introductionmentioning

confidence: 99%

“…Although there is a study that redefined and analyzed SPS modulation to reshape DAB working modes from the perspective of underlying circuit elucidation and elaborating the method of the SPS modulation only has one control variable. It must ensure the power transmission, which cannot easily inhibit the backflow power at the same time [17]. Although there is a study that redefined and analyzed SPS modulation to reshape DAB working modes from the perspective of underlying circuit elucidation and elaborating the method of the suppression of backflow power, both simulation and experimental results indicate that the backflow power still exists [18].…”

Section: Introductionmentioning

confidence: 99%

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A Backflow Power Suppression Strategy for Dual Active Bridge Converter Based on Improved Lagrange Method

Zhang,

Wang

2023

Energies

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Dual-active bridge (DAB) converters are receiving increasing attention from researchers as a critical part of the power transmission of energy routers. However, the DAB converter generates a large backflow power in conventional control mode, and when the load is mutated, its output voltage takes longer to return to the reference value accompanied by large fluctuations. To solve the above problems, a hybrid strategy is proposed in this paper to optimize the converter. The mathematical models of the transmitted power and the backflow power were firstly derived through in-depth analysis of the DAB converter under extended-phase-shift (EPS) modulation, and the suppression of the backflow power was performed according to the improved Lagrange method utilized in the obtained results. Moreover, considering the poor dynamic characteristics of DAB converters under PI control, according to the state space average model of output voltage in the paper, a model prediction control equation is established to improve the dynamic response of the converter by predicting the output voltage value at the next moment. The simulation results verify the effectiveness of the optimization strategy presented in the text.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%