A Power Efficiency Improvement Technique for a Bidirectional Dual Active Bridge DC–DC Converter at Light Load

Hirose, Takahisa; Takasaki, Mika; Ishizuka, Yoichi

doi:10.1109/tia.2014.2327147

Cited by 47 publications

(16 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have proposed the software-based compensation method for a basic DAB dc-dc converter topology (15) (16) . It can reduce the switching surges for a light load, without any of additional circuits such as the snubber circuits or resonant circuits.…”

Section: Proposed Operation Methodsmentioning

confidence: 99%

“…The detailed description of the ideal circuit is revealed in previous papers (15) (16) . Therefore, only the results are shown in this paper.…”

Section: Proposed Operation Methodsmentioning

confidence: 99%

“…2, the both of light load and heavy load can be divided into four states. To analyze the characteristics of the circuit, The Extended StateSpace Averaging Method (16) is applied. In order to simplify the loss analysis, the loss including the resistance of the switches and transformer is defined as r loss.…”

Section: Loss Included Analysis Of Conventional Operationmentioning

confidence: 99%

See 2 more Smart Citations

Static Characteristic Analysis of Proposed Bi-Directional Dual Active Bridge DC-DC Converter

et al. 2015

Self Cite

View full text Add to dashboard Cite

Recently, increased attention is being paid to power supply networks using energy storage devices such as batteries. Network topologies using bi-directional isolated DC-DC converters of low or medium capacity are required for the diversification of power supply networks. The dual active bridge (DAB) DC-DC converter is one of the most effective bi-directional isolated DC-DC converters. However, the circuit has some inherent problems such as degradation of power efficiency and the occurrence of surges during light-load operation. In this paper, we propose a control technique to solve these problems. From the experimental results, it is confirmed that the maximum power efficiency improvement was 16% for a light load. Applying two operation modes, the proposed operation in light load and the conventional operation in heavy load, the circuit can be operated across a full range of road. To switch between the two modes seamlessly, the precise boundary point of the two modes is needed for feedback control. Therefore, a precise static characteristic analysis with loss was carried out. From the results, the loss included simple equivalent circuit model was obtained. The root mean square error between the proposed analysis and the experimental results is within 4%.

show abstract

Section: Proposed Operation Methodsmentioning

confidence: 99%

“…The detailed description of the ideal circuit is revealed in previous papers (15) (16) . Therefore, only the results are shown in this paper.…”

Section: Proposed Operation Methodsmentioning

confidence: 99%

Section: Loss Included Analysis Of Conventional Operationmentioning

confidence: 99%

See 1 more Smart Citation

Static Characteristic Analysis of Proposed Bi-Directional Dual Active Bridge DC-DC Converter

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nevertheless, when V in ≠V o /n, ZVS is not obtained in all the power range. Other possibilities different from PSM to control the DAB converter has been studied in other works [13]- [19] to improve ZVS range, light load behavior, etc.…”

Section: Steady State Characterizationmentioning

confidence: 99%

Modular dual active bridge converter architecture

Zumel

Ortega

Lázaro

et al. 2014

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

View full text Add to dashboard Cite

“…In this way, improvements in the overall performance can be achieved [15]. The strategy developed in [21] takes advantage of the discontinuous-current mode, which enables the reduction of diode reverse recovery losses, owing to the zero current switching transitions, and thereby benefits light loading operation. One of the key parameters in the operation of the DAB converter, is the value of the transformer leakage inductance.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency DAB Converter Using Switching Sequences and Burst Mode

Oggier

Ordonez

2016

IEEE Trans. Power Electron.

109

View full text Add to dashboard Cite

Dual Active Bridge (DAB) converters enable bidirectional power flow in buck and boost operating modes. This paper presents an advanced switching sequence and burst mode strategy to balance conduction, switching, and magnetic losses under light, medium, and heavy loading conditions, leading to improved operating efficiency. The implementation of the switching sequence employs the natural state-plane trajectories of the converter and contributes to higher efficiency and the ability to perform burst-mode. The proposed switching sequences improve the overall efficiency of the converter by enabling soft switching and adjusting the frequency to match the minimum RMS transformer current in the full operating range. Furthermore, it incorporates a fully controlled burstmode switching sequence for light loading conditions to further extend the efficiency gains. As a result, maximum efficiency is obtained by taking advantage of all the possible switching structures of the converter. The analysis provides insight into the natural trajectories of the converter, which produce softswitching transitions and enable the converter structures to achieve the target operating point directly. Simulation and experimental results are presented to validate the benefits of the switching sequence and illustrate the burst-mode operation.

show abstract

A Power Efficiency Improvement Technique for a Bidirectional Dual Active Bridge DC–DC Converter at Light Load

Cited by 47 publications

References 17 publications

Static Characteristic Analysis of Proposed Bi-Directional Dual Active Bridge DC-DC Converter

Static Characteristic Analysis of Proposed Bi-Directional Dual Active Bridge DC-DC Converter

Modular dual active bridge converter architecture

High-Efficiency DAB Converter Using Switching Sequences and Burst Mode

Contact Info

Product

Resources

About