Comparative Evaluation of Bidirectional Dual Active Bridge DC-DC Converter Variants

Sfakianakis, Georgios E.; Everts, Jordi; Huisman, Henk; Lomonova, E.A.

doi:10.1109/vppc.2016.7791631

Cited by 12 publications

(4 citation statements)

References 15 publications

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“…Furthermore, the measured efficiency of the prototype is 96.27% at full load condition. The peak efficiencies of 94.8% at 2.8 kW [24], 95.5% at 1.2 kW [25], 96.5% at 1.2 kW [26], 96.71% at 1 kW [16] can be found in the literature of three‐level isolated bidirectional DC–DC converters. Therefore, the proposed 3LTT‐IBDC seems more promising in terms of achieving high efficiency.…”

Section: Experimental Studymentioning

confidence: 99%

“…A structure using half-and fullbridge topologies with both I-type primary and I-type secondary side of the transformer has also been studied in [19,20] that examine the control strategy and zero voltage switching (ZVS) of these topologies. In addition, the other structures have also been studied in the literature which are T-type only in the primary side of the transformer in [21] and T-type only in the secondary side of the transformer in [22][23][24]. Also, T-type switching combination topologies are stated in [24] as more efficient topology than I-type.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the other structures have also been studied in the literature which are T-type only in the primary side of the transformer in [21] and T-type only in the secondary side of the transformer in [22][23][24]. Also, T-type switching combination topologies are stated in [24] as more efficient topology than I-type.…”

Section: Introductionmentioning

confidence: 99%

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Novel three‐level T‐type isolated bidirectional DC–DC converter

Demirel

Arifoğlu

Kalayci

2019

IET Power Electronics

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This study presents a novel three-level T-type isolated bidirectional DC-DC converter (3LTT-IBDC) for bidirectional DC power transfer. Owing to of the T-type structure of the proposed converter it has less number of switches and thus, lower cost and higher efficiency, as well as easy control are the advantages of the proposed converter compared to three-level counterparts. Additionally, 3LTT-IBDC is more reliable than three-level converters since unequal voltage blocking does not occur in T-type structure. Moreover, the symmetrical operation of the isolation transformer due to three-level symmetrical voltage waveform, lower voltage stress of switches and thus, higher efficiency are other advantages of 3LTT-IBDC compared to twolevel counterparts. Here, the DC voltage gain and power transfer characteristic of the proposed converter for steady-state operation and the expressions of the leakage inductance are derived. The proposed converter is simulated using PSIM. A 2-kW prototype is built to verify the theoretical analysis of the converter. Theoretical and experimental results show a good agreement and validate the competency of the presented converter design. The efficiency of the proposed converter and switching transitions of the switches are analysed. The full load and maximum efficiency of the converter are measured as 96.27% and 96.81%, respectively.

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Section: Experimental Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Novel three‐level T‐type isolated bidirectional DC–DC converter

Demirel

Arifoğlu

Kalayci

2019

IET Power Electronics

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“…A symmetric modulation‐based 3‐5 Level multilevel DAB (MLDAB) having NPC as a secondary side with the capacitor voltage balancing has been presented in [19]. In [20], a detailed comparison of three different DAB topologies named as 3‐3 Level HB–HB, 3‐5 Level HB–NPC and 3‐5 Level HB‐T‐type leg has been reported. It was concluded that 3‐5 Level FB‐T‐type will be a good choice out of three topologies due to low AC‐link losses and good utilisation of the semiconductor area.…”

Section: Introductionmentioning

confidence: 99%

Multiple parallel‐connected DAB‐based solid‐state transformer for hybrid DC/AC microgrid system

Nalamati

Agrawal²,

Gupta

2020

IET Generation Trans & Dist

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To cater unceasing supply to the modern AC and DC loads, renewable energy resources integrated hybrid DC/AC microgrid (HMG) are considered as a viable technological solution. In this study, a multiple parallel‐connected bidirectional converter (MPBC) topology has been proposed to enhance the solid‐state transformer (SST) power handling capability with flexible control of the HMG. To improve the high‐frequency AC‐link power quality and to control the power transfer through the SST in each dual active bridge a split‐step phase shift (SSPS) control technique has been used. A power management control strategy has also been proposed for efficient power transfer between the sources and loads of the HMG. The proposed MPBC‐based SST is suitable for interconnecting multiple utility feeders. Multiple redundant utility feeders ensure stiff bus voltages and omit the power supply reliability issues. The operation of the proposed MPBC‐SST converter system with corresponding control algorithm is verified through the simulation results in both grid feeding and grid fetching operating modes. Furthermore, experimental results are presented to validate the performance of the proposed MPBC‐SST converter along with its proposed controller strategy.

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