Virtual Direct Power Control Scheme of Dual Active Bridge DC–DC Converters for Fast Dynamic Response

Song, Wensheng; Hou, Nie; Wu, Ming-Yi

doi:10.1109/tpel.2017.2682982

Cited by 195 publications

(95 citation statements)

References 30 publications

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“…The virtual direct power control method is used to control the feedforward link of the converter, which improves the dynamic response speed of the DAB converter. Nonetheless, the control strategy of the transient DC component has not been analyzed in [14].…”

Section: Introductionmentioning

confidence: 99%

Research on Transient DC Bias Analysis and Suppression in EPS DAB DC-DC Converter

et al. 2020

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During excitation and demagnetization phase for the superconducting magnet, in dual-activebridge (DAB) converter based power supply, a dc bias may occur in high-frequency transformer and thus lead to the faults. In this paper, an improved transient extend-phase-shift (TEPS) control strategy is proposed to suppress the dc bias without any additional hardware. Unlike the traditional extend-phase-shift (EPS) strategy, the voltages of the transformer are asymmetrical for half a period after changing phase-shift and then remain symmetrical. This makes it take half a switching period for the current of transformer to reach the steady state, and then eliminates the dc bias. The experiment verifies the performance on dc bias suppression. This method provides a good theoretical and experimental basis for the EPS DAB DC-DC converter to realize the optimal control for excitation and demagnetization system in high-field superconducting magnet power supply (SMPS). INDEX TERMS Dual-active-bridge (DAB), dc bias, transient extend-phase-shift (TEPS) control strategy, high-field SMPS.

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Section: Introductionmentioning

confidence: 99%

Research on Transient DC Bias Analysis and Suppression in EPS DAB DC-DC Converter

et al. 2020

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“…However, it did not analyze the response characteristics of the converter when the input voltage was changed. In [12], based on the idea of direct power control, a virtual direct power control strategy was proposed, which introduces input voltage and load current information at the same time, so that the converter achieves a fast dynamic response. In [13], based on the working principle of a dual-active bridge DC-DC converter, the principle of single-phase shift control, and the steady-state characteristics of the output current, an output current control method based on the input voltage feedforward was proposed to improve the dynamic characteristics of the converter.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Model Predictive Control Strategy of Supercapacitor Energy Storage System Based on Double Active Bridge

Wang

Guo

et al. 2019

Energies

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In order to solve the problem of which the dynamic response of a supercapacitor (SC) is limited due to the mismatch dynamic characteristics between the DC/DC converter and supercapacitor in an energy storage system, this paper proposes a hybrid model predictive control strategy based on a dual active bridge (DAB). The hybrid model predictive control model considers the supercapacitor and DAB in a unified way, including the equivalent series resistance and capacitance parameters of the SC. The method can obtain a large charging and discharging current of the SC, thereby not only improving the overall response speed of the system, but also expanding the actual capacity utilization range of the SC. The simulation results show that compared with the model prediction method of the dual active bridge converter, the proposed control method can effectively improve the overall response speed of the system, which can be improved by at least 0.4 ms. In addition, the proposed method increases the actual upper limit of the SC voltage, reduces the actual lower limit of the SC voltage, and then expands the actual capacity utilization range of the SC by 18.63%. The proposed method has good application prospects in improving the dynamic response performance of energy storage systems.

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“…The terminal of microgrid depends only on power electronic devices, so the converters are the most important part of the microgrid systems. Especially in DC microgrid system, DC/DC converters [8] play the most prominent group of converters. Because, it allows voltage control, power flow control and system balancing.…”

Section: Introductionmentioning

confidence: 99%

PI Control of Current-Fed Dual Active Bridge Converter for DC Microgrid

2019

IJITEE

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A detailed modelling of soft-switching isolated current-fed dual active bridge (CFDAB) DC/DC converter is presented. This converter is suitable for an interface between two DC buses in a microgrid but is not controlled. The model of the converter is derived with the help of state space averaging method. Based on this modelling, the PI controller designed to improve the operation of the CFDAB converter. Simulation results using MATLAB/Simulink with controller design to verify the stability of the converter and validated performance of the system used for DC microgrid applications of between two buses. The effectiveness of the controller has justified in terms of line, load variation and tracking the reference values.

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Virtual Direct Power Control Scheme of Dual Active Bridge DC–DC Converters for Fast Dynamic Response

Cited by 195 publications

References 30 publications

Research on Transient DC Bias Analysis and Suppression in EPS DAB DC-DC Converter

Research on Transient DC Bias Analysis and Suppression in EPS DAB DC-DC Converter

Hybrid Model Predictive Control Strategy of Supercapacitor Energy Storage System Based on Double Active Bridge

PI Control of Current-Fed Dual Active Bridge Converter for DC Microgrid

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