Journal ArticleDOI
Modeling and Analysis of a Dual-Active-Bridge-Isolated Bidirectional DC/DC Converter to Minimize RMS Current With Whole Operating Range
TLDR
In this article, the authors proposed a global optimal condition (GOC) equation to derive the closed form of analytic expressions of an optimal modulation scheme that makes the DAB converter operate with minimized root-mean-square (rms) current during whole power range with different operating modes.Abstract:
The triple phase shift (TPS) modulation scheme, which provides three control freedoms, is of great importance for the optimized operation of a dual active bridge (DAB) isolated bidirectional dc/dc converter. First of all, this paper introduces an accurate, universal model to describe the analytic expressions of the DAB converter under TPS control. Based on this, six operating modes of the DAB converter are further discussed. Afterwards, the concept of global optimal condition (GOC) equations is proposed to derive the closed form of analytic expressions of an optimal modulation scheme that makes the DAB converter operate with minimized root-mean-square (rms) current during whole power range with different operating modes. According to the GOC equations, the physical explanation of the proposed modulation scheme is further given in details, and the complex interaction among the control variables, the transferred power, and rms current is revealed. The real-time optimization process of the proposed method is also specified. Finally, the proposed methods are applied to a laboratory prototype. The experimental results confirm the theoretical analysis and practical feasibility of the proposed strategies.read more
Citations
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Journal ArticleDOI
Overview and Comparison of Modulation and Control Strategies for a Nonresonant Single-Phase Dual-Active-Bridge DC–DC Converter
Nie Hou,Yun Wei Li +1 more
TL;DR: To improve both steady-state and transient performances, a combination approach to optimize both the efficiency and dynamics for an NSDAB dc–dc converter based on the reviewed methods is presented.
Journal ArticleDOI
A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC–DC Converter for V2G Application
TL;DR: In this article, a DAB-based three-phase dc-dc isolated converter with a novel modulation strategy is presented, which results in single-stage power conversion with no electrolytic capacitor.
Journal ArticleDOI
Reactive Power Minimization in Bidirectional DC–DC Converters Using a Unified-Phasor-Based Particle Swarm Optimization
TL;DR: Simulation and experimental results in terms of the reactive power, soft-switching range, and efficiency are provided to verify the practical feasibility of the proposed method for the bidirectional DAB converters.
Journal ArticleDOI
Circulating Current and ZVS-on of a Dual Active Bridge DC-DC Converter: A Review
TL;DR: This paper presents the state-of-the-art view in the cause of circulating current and loss of ZVS and surveys the solutions to these problems.
Journal ArticleDOI
Model Predictive Control With Power Self-Balancing of the Output Parallel DAB DC–DC Converters in Power Electronic Traction Transformer
TL;DR: A model predictive control with current-stress-optimized (MPC-CSO) scheme based on dual-phase-shift (DPS) control is proposed to improve the dynamic performance, balance the transmission power, and realize the current- stress optimization of output voltage in the next horizon.
References
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Journal ArticleDOI
Performance characterization of a high-power dual active bridge DC-to-DC converter
TL;DR: In this article, the performance of a high-power, high-density DC-to-DC converter based on the single-phase dual active bridge (DAB) topology is described.
Journal ArticleDOI
Overview of Dual-Active-Bridge Isolated Bidirectional DC–DC Converter for High-Frequency-Link Power-Conversion System
TL;DR: In this paper, the dual-active-bridge (DAB) isolated bidirectional dc-dc converter (IBDC) serves as the core circuit of high frequency-link (HFL) power conversion systems.
Journal ArticleDOI
Eliminate Reactive Power and Increase System Efficiency of Isolated Bidirectional Dual-Active-Bridge DC–DC Converters Using Novel Dual-Phase-Shift Control
Hua Bai,Chunting Chris Mi +1 more
TL;DR: In this paper, a dual-phase-shift (DPS) control strategy for a dual active-bridge isolated bidirectional DC-DC converter is proposed, which consists of a phase shift between the primary and secondary voltages of the isolation transformer, and a phase shifting between the gate signals of the diagonal switches of each H-bridge.
Journal ArticleDOI
A Bidirectional Isolated DC–DC Converter as a Core Circuit of the Next-Generation Medium-Voltage Power Conversion System
S. Inoue,Hirofumi Akagi +1 more
TL;DR: In this paper, a bidirectional isolated dc-dc converter considered as a core circuit of 3.3kV/6.6kV high-power-density power conversion systems in the next generation is described.
Journal ArticleDOI
Extended-Phase-Shift Control of Isolated Bidirectional DC–DC Converter for Power Distribution in Microgrid
TL;DR: In this paper, an extended phase-shift (EPSC) control of IBDC for power distribution in microgrid is proposed, which not only expands regulating range of transmission power and enhances regulating flexibility, but also reduces current stress and improves the system efficiency.
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