Overview of Dual-Active-Bridge Isolated Bidirectional DC–DC Converter for High-Frequency-Link Power-Conversion System

Zhao, Biao; Song, Qiang; Liu, Wenhua; Sun, Yandong

doi:10.1109/tpel.2013.2289913

Cited by 1,499 publications

(557 citation statements)

References 140 publications

(138 reference statements)

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“…The proposed universal bidirectional DC-DC converter is composed of an inductor, two capacitors and four power switches, as shown in Figure 1 [29]. By comparing the battery voltage (V bat ) and the DC-bus voltage (V bus ), the power flow direction can be determined.…”

Section: Operating Principle Of the Universal Bidirectional Dc-dc Conmentioning

confidence: 99%

“…Dual-active bridge DC-DC converters can provide universal bidirectional power conversion; however, these topologies require a large number of power switches (typically eight). Moreover, they are all isolated type bidirectional DC-DC converters [29]. In [30,31], a novel low loss modulation strategy with simple circuit configuration is proposed.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Liu

et al. 2016

Energies

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Abstract:In this paper, first the operating principles of a non-isolated universal bidirectional DC-DC converter are studied and analyzed. The presented power converter is capable of operating in all power transferring directions in buck/boost modes. Zero voltage switching can be achieved for all the power switches through proper modulation strategy design, therefore, the presented converter can achieve high efficiency. To further improve the efficiency, the relationship between the phase-shift angle and the overall system efficiency is analyzed in detail, an adaptive phase-shift (APS) control method which determines the phase-shift value between gating signals according to the load level is then proposed. As the modulation strategy is a software-based solution, there is no requirement for additional circuits, therefore, it can be implemented easily and instability and noise susceptibility problems can be reduced. To validate the correctness and the effectiveness of the proposed method, a 300 W prototyping circuit is implemented and tested. A low cost dsPIC33FJ16GS502 digital signal controller is adopted in this paper to realize the power flow control, DC-bus voltage regulation and APS control. According to the experimental results, a 12.2% efficiency improvement at light load and 4.0% efficiency improvement at half load can be achieved.

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Section: Operating Principle Of the Universal Bidirectional Dc-dc Conmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Liu

et al. 2016

Energies

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“…Consequently, in the on-board condition, several topologies that replace the line-frequency transformer by a high-frequency isolation transformer are commonly used which make the mobile energy storage system more compact and flexible. Figure 4 is a two-stage topology that consists of a single-phase PWM AC-DC converter and a dual-active-bridge (DAB) high-frequency isolated DC-DC converter [58][59][60][61][62]. This topology improves safety and reduces size of the converter.…”

Section: Figurementioning

confidence: 99%

Topology of a Bidirectional Converter for Energy Interaction between Electric Vehicles and the Grid

2014

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Abstract:In vehicle-to-grid (V2G) systems, electric vehicles interact with the grid as distributed energy storage systems that offer many potential benefits. As an energy interface between a vehicle and the grid, the bidirectional converter plays a crucial role in their interaction. Its reliability, safety, cost, efficiency, weight, size, harmonics, and other factors are of essential importance for V2G realization, especially for on-board operations. Beyond the common existing topologies for bidirectional chargers, this paper introduces a novel high-power-factor bidirectional single-stage full-bridge (BSS-FBC) topology, which offers advantages in power density, size, weight, cost, efficiency, power quality, dynamic characteristic, reliability, and complexity. Its operational principles and control strategies are presented. Harmonic analysis on the basis of double-Fourier integral is performed with detailed comparison of line current harmonic characteristics between the BSS-FBC topology and unipolar/bipolar controlled single-phase pulse width modulation (PWM) converters. A dynamic model of the topology is derived, its dynamic behavior analyzed, and its compensator design method developed. Simulation and experimental results are employed to verify the design and analysis. Design considerations for the key parameters are discussed. A 3.3 kW prototype is developed for this topology and validated in its vehicle applications. The results demonstrate clearly the benefits and advantages of the new topology.

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“…Dual-active-bridge isolated bidirectional DC-DC converters (DAB-IBDCs) based on high frequency transformers are the most common topologies for conventional HVCR BDCs [10][11][12]. HVCR can be achieved by adjusting the transformer turns ratio.…”

Section: Introductionmentioning

confidence: 99%

A Four-Phase High Voltage Conversion Ratio Bidirectional DC-DC Converter for Battery Applications

Xue

Wang

et al. 2015

Energies

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This study presents a four-phase interleaved high voltage conversion ratio bidirectional DC-DC converter circuit based on coupled inductors and switched capacitors, which can eliminate the defects of conventional high voltage conversion ratio bidirectional DC-DC converters in terms of high-voltage/current stress, less efficiency and low-power limitation. Parallel channels are used to reduce current stress at the low-voltage side and series connected switched capacitors are used to enlarge voltage conversion ratio, reduce voltage stress and achieve auto current sharing. This paper proposes the operation principle, feature analysis and optimization design considerations. On this basis the objectives of high voltage conversion ratio, low voltage/current stress, high power density, high efficiency and high-power applications can be achieved. Some experimental results based on a 500 W prototype converter (24 V to 48 V at low-voltage side, 400 V at high-voltage side) are given to verify the theoretical analysis and the effectiveness of the proposed converter.

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Overview of Dual-Active-Bridge Isolated Bidirectional DC–DC Converter for High-Frequency-Link Power-Conversion System

Cited by 1,499 publications

References 140 publications

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Analysis and Controller Design of a Universal Bidirectional DC-DC Converter

Topology of a Bidirectional Converter for Energy Interaction between Electric Vehicles and the Grid

A Four-Phase High Voltage Conversion Ratio Bidirectional DC-DC Converter for Battery Applications

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