Variable frequency triple-phase-shift modulation strategy for minimizing RMS current in dual-active-bridge DC-DC converters

Sun, Xiaodong; Wang, Zhixuan; Zhang, Qi; Chen, Guitao

doi:10.1007/s43236-020-00183-8

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…In Ref. [25], frequency conversion modulation was combined with TPS modulation to obtain four optimized degrees of freedom to achieve the minimum effective inductor current value in the entire power range and improve the efficiency under heavy loads. Frequency conversion-phase shift modulation can further improve the transmission efficiency and steady-state performance of the converter, but this complex modulation strategy places higher requirements on solution technology.…”

Section: Modified Frequency Modulationmentioning

confidence: 99%

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

Chen,

Zhang,

et al. 2023

Chin. J. Electr. Eng.

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In today's fast-paced, information-driven world, data centers can offer high-speed, intricate capabilities on a larger scale owing to the ever-growing demand for networks and information systems. Because data centers process and transmit information, stability and reliability are important. Data center power supply architectures rely heavily on isolated bidirectional DC-DC converters to ensure safety and stability. For the smooth operation of a data center, the power supply must be reliable and uninterrupted. In this study, we summarize the basic principle, topology, switch conversion strategy, and control technology of the existing isolated bidirectional DC-DC converters. Subsequently, existing research results and problems with isolated bidirectional DC-DC converters are reviewed. Finally, future trends in the development of isolated bidirectional DC-DC converters for data centers are presented, which offer valuable insights for solving engineering obstacles and future research directions in the field.

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Section: Modified Frequency Modulationmentioning

confidence: 99%

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

Chen,

Zhang,

et al. 2023

Chin. J. Electr. Eng.

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“…The switch Q 3 will not conduct until and unless switch Q 2 releases all its energy via D 2 . The tank current i l1 at t 1 is achieved by using Equation (8).…”

Section: Stagementioning

confidence: 99%

“…It has gained increasing attention for its use in high-power applications such as energy storage systems, electric vehicles, and solid-state transformers [7]. Due to the recent advancements in semiconductor devices, digital signal processors, and magnetic components, DAB converters have shown many advantages over their counterpart topologies (i.e., buck and boost converters) in terms of galvanic isolation, soft-switching capability, bidirectional power transfer, ease of control, high power conversion efficiency and high-power density [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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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“…To extend the application of resonant converters to a wide range of powers, a number of works have been addressed for LCC converters, for example, in the EV wireless charger area [14][15][16][17]. A compaction pump power supply with a wide output power range based on LCC topology with high switching frequency was developed in ref.…”

Section: Introductionmentioning

confidence: 99%

Quasi‐fixed frequency controlled phase modulation LCC resonant converter with a wide power range

Feng

Kong

2023

IET Circuits, Devices & Syst

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The research on LCC resonant converters has become increasingly popular since the application of the zero‐voltage switching can improve the transmission ability and ensure the high efficiency of the power supplies. In this article, a novel quasi‐definite frequency‐based modulation control method to extend the excellent properties of LCC resonators to a wide range of powers is introduced. By adjusting the frequency and phase in a bidirectional manner in accordance with the design law, excellent output performance can be maintained over a wide power range, which is overcome by adjusting the switching frequency and phase separately in conventional modulation methods. In order to justify the effectiveness of the proposed modulation control method, a simulation and experimental platform of LCC resonators using the proposed modulation method was performed. Simulation and experimental results can effectively demonstrate the performance of the proposed modulation control method for a variety of input voltage and output power cases, and the efficiency of the LCC converters will be improved in higher power systems.

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Variable frequency triple-phase-shift modulation strategy for minimizing RMS current in dual-active-bridge DC-DC converters

Cited by 7 publications

References 25 publications

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

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

Quasi‐fixed frequency controlled phase modulation LCC resonant converter with a wide power range

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