Design and Optimization of Three-Phase Dual-Active-Bridge Converters for Electric Vehicle Charging Stations

Nguyen, Duy Dinh; Bui, Lam Thu; Yukita, Kazuto

doi:10.3390/en13010150

Cited by 15 publications

(6 citation statements)

References 17 publications

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“…In a similar study presented in [137], a five-level DAB converter is employed to achieve wide voltage gain. Both [136] and [138] optimize transformer RMS current to enhance efficiency. Moreover, wide voltage gain can be achieved with a novel circuit architecture based on dual transformer in DAB [139].…”

Section: B Dual Active Bridge 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: B Dual Active Bridge 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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“…The proposed flux calculation method is applied to design transformers for a 10 kW three-phase DAB converter. Details of the design and optimisation process were reported in [22]. The converter is designated for the battery quick charger application.…”

Section: Case Studymentioning

confidence: 99%

“…A 10-kW converter system, whose design and optimisation process were reported in [22], is employed to validate the proposed flux estimation formula. The designed transformers have two windings of 15 turns per each and are arranged according to the core-typed style.…”

Section: Experimental Evaluationmentioning

confidence: 99%

“…A design and optimisation of three-phase DAB converters with Y-Y transformer configuration for quick charging applications with a vehicle-to-grid support were reported in [22] by our research team. The capability of the charger is 50 kW, divided into several sub-modules.…”

Section: Introductionmentioning

confidence: 99%

“…Although in [22], we presented the performance indexes of the converter such as temperature, efficiency, and so forth, the derivation of Equation ( 4) that inspires the motivation of this study was not described.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters

Nguyen

Goto

Yukita

et al. 2021

IET Power Electronics

Self Cite

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This study proposes an estimation method of flux density in high‐frequency transformers of three‐phase dual‐active‐bridge transformers. The steady‐state analysis shows that the flux in the converter is different in Buck and Boost modes and depending on load and voltage gain condition. From that, a closed‐form formula is proposed to estimate the flux swing in the core. Unlike the conventional estimation technique, the proposed one represents the flux as a function of input and output voltages and the phase shift value. Finite element analysis confirms that the proposed formula can predict the flux with less than 4% error. The proposed formula can also help to improve the prediction of temperature profile of the transformers with a high accuracy of less than 1 degree Celsius in the mid‐ to high‐power range as validated in experiments. The proposed flux estimation method can be used in designing the converter or in predicting the converter behaviour under critical conditions such as load changing or starting, and so forth, to help protect the transformers from saturation or DC bias.

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Interleaved bidirectional DC–DC converter with single‐phase high‐frequency isolation for the wide range of industrial applications

El Kattel,

Nogueira Cavalcante,

Praça

et al. 2024

Circuit Theory & Apps

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SummaryThis paper outlines the development of an interleaved bidirectional DC–DC converter featuring single‐phase high‐frequency isolation and employing two distinct pulse width modulations (PWMs), one for each power flow direction. The analysis of converter stages, expressions for DC voltage gains, and voltage/current stresses in continuous conduction mode are presented. The proposed converter offers several advantages, including a new modulation approach, a current ripple frequency, and voltage in two ports that are four times higher than the switching frequency. Additionally, it entails a reduction in the volume and weight of passive elements and ensures balanced current distribution between the arms. Moreover, the single‐phase transformer offers galvanic isolation between the DC bus and the battery or supercapacitor. An experimental prototype has been implemented in the laboratory to validate the mathematical and theoretical analysis for both energy flow directions under the test conditions, with a converter‐rated power of 2.5 kW, a low voltage side of 180 V, and a high voltage side of 380 V.

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Design and Optimization of Three-Phase Dual-Active-Bridge Converters for Electric Vehicle Charging Stations

Cited by 15 publications

References 17 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 flux estimation method for three‐phase dual‐active‐bridge DC/DC converters

Interleaved bidirectional DC–DC converter with single‐phase high‐frequency isolation for the wide range of industrial applications

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