Backward Step-Up Control Strategy for Bidirectional LLC Resonant Converter

Niu, Jingkai; Wu, Xuezhi; Wang, Yue; Jiang, Long; Zhang, Weige; Tong, Yibin

doi:10.3390/en15124471

Cited by 4 publications

(4 citation statements)

References 24 publications

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“…The HFT provides galvanic isolation between the primary and secondary sides [76]. The LLC resonant tank of an LLC converter [77,78] consists of a series inductor L p , a series capacitor C p , a magnetizing inductor L m , and a HFT, as shown in Figure 17b. The LLC resonant tank is linked to an HFT, which provides galvanic isolation.…”

Section: Isolated Bdc Topologymentioning

confidence: 99%

A critical review on contemporary power electronics interface topologies to vehicle‐to‐grid technology: Prospects, challenges, and directions

Tasnim,

Riana,

Shams

et al. 2023

IET Power Electronics

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With the evolution of the smart grid concept, the production of electric vehicles (EVs) is predicted to rise because of environmental concerns, technological advancements, and improvements in EV management. Vehicle‐to‐grid (V2G) is an enabling, realistic, and affordable technology to cope with a large number of EVs, increase energy sustainability, provide economical solutions, satisfy user‐side consumers, and facilitate power flow to the grid. Power electronics (PE) converters, particularly bidirectional power converters, are promising interfaces for V2G infrastructure because they determine the characteristics and functionalities of V2G. Therefore, this study provides an extensive review of the characteristics, technological aspects, and visions of V2G infrastructure. This review helps to identify the current state, most recent developments, and problems related to bidirectional interface topologies and control strategies in V2G infrastructure. It further examines the classification of chargers or dischargers based on numerous factors, including limitations and impacts. Furthermore, the benefits, challenges with possible mitigation solutions, and future outlooks in the implementation of V2G technology are discussed. This review is planned to serve as a reference for existing work in V2G frameworks, PE interfacing topologies, and control strategies, and to also facilitate a guideline for future work that can be implemented to flourish V2G technology.

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Section: Isolated Bdc Topologymentioning

confidence: 99%

A critical review on contemporary power electronics interface topologies to vehicle‐to‐grid technology: Prospects, challenges, and directions

Tasnim,

Riana,

Shams

et al. 2023

IET Power Electronics

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“…The total losses produced by the switching pattern under the proposed mo are specified in Equation (19), where tri denotes the rising time. , ,…”

Section: Switching Losses Calculationmentioning

confidence: 99%

“…L-tank is explored for single-phase and threephase converters in [18], reducing energy losses. Other researchers in [19] proposed the LLC and CLLC resonant tanks for DAB topology that feature extended input voltage range along with reduced energy losses. The advantages of an LLC resonant converter include its simple structure and soft switching.…”

Section: Introductionmentioning

confidence: 99%

“…The advantages of an LLC resonant converter include its simple structure and soft switching. It can facilitate the transmission of power in both directions, but it is challenging to achieve a normalized gain greater than one in the backward mode (backward step-up mode) [19,20]. Among different studies addressed, the DAB converter with LC tank offers high-power density with a reduced number of devices, since at the resonance frequency it can accomplish zero impedance [21].…”

Section: Introductionmentioning

confidence: 99%

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Practical Evaluation of Loss Reduction in Isolated Series Resonant Converter with Fixed Frequency Modulation

Khan

Waseem

et al. 2022

Energies

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Nowadays, power converters with reduced cost, compact size and high efficiency are evolving to overcome the emergent challenges of renewable energy integrations. In this context, there is an increased demand for well-designed power converters in renewable energy applications to reduce energy utilization and handle a variety of loads. This paper proposes a center-tapped bridge cascaded series-resonant LC dual active bridge (DAB) converter for DC-DC conversion. The low part count of the proposed converter enables a high-power density design with reduced cost. The proposed converter offers reduced conduction losses as the reverse current is eliminated by adopting current blocking characteristics. Reverse current blocking also enables zero voltage switching (ZVS) and zero current switching (ZCS) over a wide operating range. Therefore, using a simple fixed frequency modulation (FFM) scheme offers a wide operating range compared to a conventional DAB converter. A thorough comparison of the proposed converter and a conventional DAB converter is provided based on conduction losses and switching losses to illustrate the performance improvement. Lastly, the effectiveness of the proposed converter is validated through simulation and experimental results.

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