A Structurally Reconfigurable Resonant Dual-Active-Bridge Converter and Modulation Method to Achieve Full-Range Soft-Switching and Enhanced Light-Load Efficiency

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

doi:10.1109/tpel.2018.2862879

Cited by 43 publications

(9 citation statements)

References 32 publications

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“…In conjunction with the advanced modulation scheme, using a resonant tank between the two bridges of the DAB converter extends the ZVS range of battery charging [144]- [154]. A variety of resonant tanks such as CLC [144], LLL [145], CLLC [146]- [148], LC [149]- [152], LCL [153] are found in the existing literature.…”

Section: Dual Active Bridge Resonant Convertermentioning

confidence: 99%

A Comprehensive Review of Power Converter Topologies and Control Methods for Electric Vehicle Fast Charging Applications

et al. 2022

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Wide-scale adoption and projected growth of electric vehicles (EVs) necessitate research and development of power electronic converters to achieve high power, low-cost, and reliable charging solutions for the EV battery. This paper presents a comprehensive review of EV off-board chargers that consist of acdc and dc-dc power stages from the power network to the EV battery. Although EV chargers are categorized into two types, namely, on-board and off-board chargers, it is essential to utilize off-board chargers for dc fast and ultra-fast charging so that volume and weight of EV can be reduced significantly. Here, we discuss the state-of-the-art topologies and control methods of both ac-dc and dc-dc power stages for off-board chargers, focusing on technical details, ongoing progress, and challenges. In addition, most of the recent multiport EV chargers integrating PV, energy storage, EV, and grid are presented. Moreover, comparative analysis has been carried out for the topologies and the control schemes of ac-dc rectifiers, dc-dc converters, and multiport converters in terms of architecture, power and voltage levels, efficiency, bidirectionality, control variables, advantages, and disadvantages which can be used as a guideline for future research directions in EV charging solutions.INDEX TERMS Charging stations, converter control, converter topologies, DC fast chargers, electric vehicle (EV), EV fast chargers, multilevel AC-DC converter, multiport converter, off-board charger.

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Section: Dual Active Bridge Resonant Convertermentioning

confidence: 99%

A Comprehensive Review of Power Converter Topologies and Control Methods for Electric Vehicle Fast Charging Applications

et al. 2022

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“…An enhanced DPSC is proposed in the dual active bridge (DAB) to achieve ZVS and power regulation with the same This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see http://creativecommons.org/licenses/by/4.0/ duty cycle of two sides [25]. However, only a special case, i.e., (nV DC2 /V DC1 = 1, n is the turns ratio of the transformer), is investigated and the theoretical analysis lacks universality.…”

Section: A Joint Control With Variable Zvs Angles For Dynamic Efficiency Optimization In Wirelessmentioning

confidence: 99%

A Joint Control With Variable ZVS Angles for Dynamic Efficiency Optimization in Wireless Power Transfer System

Jiang

Wang

Fang

et al. 2020

IEEE Trans. Power Electron.

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Tight voltage regulation and high efficiency are fundamental objectives of wireless power transfer systems (WPTSs) as power supplies. Although the well-established impedance matching control attempts to achieve high efficiency, the associated extra dcdc converters or hard switching of converters in WPTSs reduce the overall system efficiency, particularly for high-power applications. In this article, under zero voltage switching (ZVS) conditions, the minimum power loss point is derived and proved in detail with different ZVS angles. Moreover, a joint control with variable ZVS angles (JC-VZA) is proposed to ensure ZVS of all switches and achieve the required output, simultaneously. This control scheme is implemented by use of controllers in both sides of WPTSs, which adjust their respective ZVS angles for dynamic efficiency optimization. Under ZVS conditions, the proposed JC-VZA features an optimal amount of reactive power that achieves the minimum total power loss by significantly reducing the switching loss. As a result, the experimental results obtained from our WPTS prototype verify its superiority. With a coupling coefficient k of 0.2 or 0.15, the maximum efficiency reaches 96.8% or 95.0% under the power rating of 288 W (rated load) as well as 92.4% or 88.7% in the case of light load (9% of 288 W). Index Terms-Dynamic efficiency optimization, joint control with variable ZVS angles (JC-VZA), wireless power transfer system (WPTS), zero voltage switching (ZVS).

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“…Isolated bidirectional DC-DC converters are widely used in electric vehicles, new energy generation and other micro grid systems with energy storage devices for galvanic isolation, soft switching and buck/boost functions. Storage elements such as batteries and super capacitors have the characteristics of wide range voltage variation [1], [2]. How to realize the high efficient operation of bidirectional converters in a wide range of voltage has become a major challenge.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range

Liang

Liu

Xu³

et al. 2020

IEEE Access

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In order to improve the efficiency of battery charging and discharging in a wide conversion gain, a dual-transformer-based full bridge converter using a block capacitor was proposed. By adding the blocking capacitor in the primary side of one transformer, an extended zero voltage switching (ZVS) range is obtained in a wide output voltage range, which is achieved by regulating the secondary voltage of the transformers to match the output voltage according to the voltage-second balance in both boost and buck modes. Besides, a mirror-symmetrical modulation is introduced in reverse power flow to avoid a limited ZVS range of the traditional dual-transformer converter. The power characteristics and ZVS range are analyzed in detailed. The analysis results and transformer current are compared with the published dual-transformer converter and the conventional dual active bridge (DAB) converter to demonstrate the advantages. Finally, a 300W prototype was built and tested to verify the effectiveness of the proposed converter.

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A Structurally Reconfigurable Resonant Dual-Active-Bridge Converter and Modulation Method to Achieve Full-Range Soft-Switching and Enhanced Light-Load Efficiency

Cited by 43 publications

References 32 publications

A Comprehensive Review of Power Converter Topologies and Control Methods for Electric Vehicle Fast Charging Applications

A Comprehensive Review of Power Converter Topologies and Control Methods for Electric Vehicle Fast Charging Applications

A Joint Control With Variable ZVS Angles for Dynamic Efficiency Optimization in Wireless Power Transfer System

A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range

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