Extension of Soft-Switching Region of Dual-Active-Bridge Converter by a Tunable Resonant Tank

Yaqoob, Muhammad; Loo, K. H.; Lai, Y. M.

doi:10.1109/tpel.2017.2654505

Cited by 82 publications

(25 citation statements)

References 24 publications

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“…Hence, for the forward power transfer, battery charging, and considering zero voltage switching (ZVS) for the two active bridges, the phase angles must be derived as δ 1 > 0 and δ 2 < 0. This rule is reversed when the battery sends its energy back to the station side while ZVS is achieved [6][7][8][9][10]. In the following equations, each phasor is considered based on its maximum value.…”

Section: Modeling Of a Dual-active Bridge Series Resonant Converter (mentioning

confidence: 99%

“…For high power applications such as fast charging of EVs, a dual-active bridge SRC (DAB-SRC) is the well-known structure for the bidirectional power flow control at EV charging infrastructures [4][5][6][7]. Figure 1 shows a charging stage of EVs based on DAB-SRCs to achieve bidirectional power flow capability between the grid and the electric vehicle, i.e., V2G capability [8][9][10]. Another advantage of DAB-SRC is that it can be implemented in a modular structure without the need for extra input or output filters, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…Section 4 presents simulation results and modification of the analysis to verify the proposed control method in the transient and steady-state conditions and the main conclusions of the paper are summarized in section 5. The most important problems associated with the state-of-the-art are the power and frequency tuning of these power converters with minimum phase displacement or circulating current [7,[10][11][12]. Current researches are mainly based on algorithms which utilize phase-locked loop (PLL) techniques.…”

Section: Introductionmentioning

confidence: 99%

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Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

et al. 2020

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This paper presents a new self-tuning loop for a bidirectional dual-active bridge (DAB) series resonant converter (SRC). For different loading conditions, the two active bridges can be controlled with a minimum time displacement between them to assure zero voltage switching (ZVS) and minimum circulation current conditions. The tuning loop can instantly reverse the power direction with a fast dynamics. Moreover, the tuning loop is not sensitive to series resonant tank tolerances and deviations, which makes it a robust solution for power tuning of the SRCs. For simplicity, the power is controlled based on the power-frequency control method with a fixed time displacement between the active bridges. The main design criteria of the bidirectional SRC are the time displacement, operating frequency bandwidth, and the minimum and maximum power, which are simply derived and formulated based on the self-tuning loop’s parameters. Based on the parameters of the tuning loop, a simplified power equation and power control method is proposed for DAB-SRCs. The proposed control method is simulated in static and dynamic conditions for different loadings. The analysis and simulation results show the effectiveness of the new tuning method.

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Section: Modeling Of a Dual-active Bridge Series Resonant Converter (mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

et al. 2020

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“…The dual active bridge (DAB) converter has attracted research among several bidirectional DC/DC converters [1]. This is due to features such as: high power density, high power handing capability, zero voltage switching (ZVS) characteristics, galvanic isolation in transformer based versions and the possibility of cascaded or modular configuration to enable higher power/higher voltage designs [2][3][4][5]. This is why investigative studies have been ongoing to analyse, control and improve the overall performance of the DAB converter [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“… Separate the bridge voltages, V br1 and V br2 , along with the inductor current ( ), into DC components using (3) and (4).  Add system dynamics using (5).…”

mentioning

confidence: 99%

Generalized Small-Signal Modelling of Dual Active Bridge DC/DC Converter

Hebala

Aboushady

Ahmed

et al. 2018

2018 7th International Conference on Renewable Energy Research and Applications (ICRERA)

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this paper presents a novel generalised approach of the small-signal modelling of dual active bridge (DAB) DC/DC converter. The adopted analysis is based on a per-unit fundamental frequency representation of the DAB. The outcome of the proposed modelling approach is a small signal, linearised, state-space DAB model; which is considered as a main building block for future control applications. The developed small signal DAB model includes all possible degrees of freedom affecting the performance of the DAB; this includes the voltage conversion ratio to allow the study of all DAB operation modes (i.e.: unity-gain and buck/boost modes.). Furthermore, since triple phase shift control (TPS) is used in this development work, the proposed model incorporates phase shift in addition to duty ratios. This feature allows for bridge voltage regulation, which is essential for efficient DAB operation in the case of buck/boost operation. Another key achievement is that the proposed small signal modelling methodology can be applied to any bidirectional DC-DC converter regardless of ratings, parameter values and number of ports. Extensive simulation is carried out to verify the proposed analysis.

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Introduction

Sha¹,

Xu²

2018

High-Frequency Isolated Bidirectional Dual Active Bridge DC–DC Converters With Wide Voltage Gain

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Extension of Soft-Switching Region of Dual-Active-Bridge Converter by a Tunable Resonant Tank

Cited by 82 publications

References 24 publications

Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

Dual-Active Bridge Series Resonant Electric Vehicle Charger: A Self-Tuning Method

Generalized Small-Signal Modelling of Dual Active Bridge DC/DC Converter

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