Journal ArticleDOI
Pwm control of dual active bridge: Comprehensive analysis and experimental verification
Amit K. Jain,Raja Ayyanar +1 more
TLDR
In this article, a comprehensive analysis and experimental results with pulsewidth-modulation (PWM) control of the dual-active-bridge (DAB) topology is presented.Abstract:
The dual-active-bridge (DAB) topology is ideally suited for high-power dc-dc conversion, especially when bidirectional power transfer is required. However, it has the drawback of high circulating currents and hard switching at light loads, if wide variation in input and output is expected. To address these issues, this paper presents a comprehensive analysis and experimental results with pulsewidth-modulation (PWM) control of the DAB. The PWM control is in addition to phase-shift modulation between the two H-bridges. The analysis addresses PWM of one bridge at a time and of both bridges simultaneously. In the latter, five distinct modes arise based on the choice of PWM and load condition. The possibilities are analyzed for optimizing power density and efficiency for low-load operation. Finally, a composite scheme combining single and dual PWM is proposed that extends the soft-switching range down to zero-load condition, reduces rms and peak currents, and results in significant size reduction of the transformer. Experimental results are presented with a 10-kW prototype.read more
Citations
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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
Efficiency-Optimized High-Current Dual Active Bridge Converter for Automotive Applications
Florian Krismer,Johann W. Kolar +1 more
TL;DR: An efficiency-optimized modulation scheme and design method are developed for an existing hardware prototype of a bidirectional dual active bridge (DAB) dc/dc converter, and the average efficiency rises from 89.6% to 93.5%.
Journal ArticleDOI
Closed Form Solution for Minimum Conduction Loss Modulation of DAB Converters
Florian Krismer,Johann W. Kolar +1 more
TL;DR: In this article, an optimal modulation scheme that enables minimum conduction and copper losses is presented for a bidirectional dual active bridge (DAB) dc-dc converter, which is employed for an automotive application.
Journal ArticleDOI
Generalized Average Modeling of Dual Active Bridge DC–DC Converter
Hengsi Qin,Jonathan W. Kimball +1 more
TL;DR: In this paper, the authors proposed a full-order continuous-time average model using the dc terms and first order terms of transformer current and capacitor voltage as state variables, resulting in a thirdorder model, if capacitor equivalent series resistance (ESR) is not considered, and a sixth-order model if ESR is considered.
Journal ArticleDOI
Accurate Small-Signal Model for the Digital Control of an Automotive Bidirectional Dual Active Bridge
Florian Krismer,Johann W. Kolar +1 more
TL;DR: In this paper, an accurate small-signal model for a galvanically isolated, bidirectional dc-dc converter and the implementation of a corresponding controller on a DSP as well as key methods and functions required for the digital implementation are detailed.
References
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Journal ArticleDOI
A three-phase soft-switched high power density DC/DC converter for high power applications
TL;DR: In this paper, three DC/DC converter topologies suitable for high power-density high power applications are presented, which operate in a soft-switched manner, making possible a reduction in device switching losses and an increase in switching frequency.
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.
Book
Real-Time Optimization by Extremum-Seeking Control
Kartik B. Ariyur,Miroslav Krstic +1 more
TL;DR: Extremum seeking is a method of adaptive control outside the classical paradigm or model reference and related schemes as discussed by the authors, which is an on-line methodology, performed by feedback, with the ability to achieve rapid convergence.
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Transformer and inductor design handbook
TL;DR: In this paper, the authors present a theoretical analysis of transformer-inductor design, including the following: AC Inductor Design Powder Core. DC Inductor design Gap Core. Forward Converter Transformer and Inductor Development.
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.
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Eliminate Reactive Power and Increase System Efficiency of Isolated Bidirectional Dual-Active-Bridge DC–DC Converters Using Novel Dual-Phase-Shift Control
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