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Proceedings ArticleDOI

A comparative evaluation of isolated bi-directional DC/DC converters with wide input and output voltage range

Florian Krismer, +2 more
- Vol. 1, pp 599-606
TLDR
In this article, the working principles and design equations of four different isolated, bi-directional DC to DC converter topologies (a dual active bridge converter, a series resonant converter and two multiple stage topologies) were presented for a 2 kW battery charger that can be operated in a wide input and output voltage range.
Abstract
The working principles and design equations of four different isolated, bi-directional DC to DC converter topologies (a dual active bridge converter, a series resonant converter and two multiple stage topologies) for a 2 kW bi-directional battery charger that can be operated in a wide input and output voltage range are presented in this paper. The results of a detailed mathematical analysis of the converter topologies as well as digital simulation results are used to select the most efficient topology for this specific converter application, where the two-stage series resonant converter is identified to be the most promising, with up to 90% efficiency at rated power.

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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

Analysis and Design of High-Frequency Isolated Dual-Bridge Series Resonant DC/DC Converter

TL;DR: In this article, a dual-bridge series resonant dc/dc converter with high frequency isolation is analyzed with two simple modified ac equivalent circuit analysis methods for both voltage source load and resistive load.
Journal ArticleDOI

High-Power Bidirectional DC–DC Converter for Aerospace Applications

TL;DR: In this article, a steady-state analysis of the bidirectional dual active bridge (DAB) dc-dc converter is presented, which produces equations for RMS and average device currents, and rms and peak inductor/transformer currents.
Proceedings ArticleDOI

1 Megawatt, 20 kHz, isolated, bidirectional 12kV to 1.2kV DC-DC converter for renewable energy applications

TL;DR: In this paper, the design of a 1 MW, 20 kHz, isolated, bidirectional 12kV to 1.2kV DC-DC converter for renewable energy applications is presented.
DissertationDOI

Modeling and optimization of bidirectional dual active bridge DC-DC converter topologies

TL;DR: In this article, the authors investigated different bidirectional and isolated DC-DC converters with a high voltage port (ranging from 240 V to 450 V), a low voltage port(11V to 16 V), and a rated power of 2 kW.
References
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Effects of eddy currents in transformer windings

P.L. Dowell
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Proceedings ArticleDOI

Calculation of losses in ferro- and ferrimagnetic materials based on the modified Steinmetz equation

TL;DR: In this paper, the influence of nonsinusoidal flux-waveforms on the remagnetization losses in ferro- and ferrimagnetic materials of inductors, transformers and electrical machines used in power electronic applications is discussed.
Journal ArticleDOI

Optimizing the AC resistance of multilayer transformer windings with arbitrary current waveforms

TL;DR: In this article, the authors present a new formula for the optimum foil or layer thickness, without the need for Fourier coefficients and calculations at harmonic frequencies, which is simple, straightforward and applies to any periodic wave shape.

Symmetrical multilevel converters with two quadrant DC-DC feeding

TL;DR: In this article, a multilevel converter with symmetrical feeding is proposed for the front-end power converter in locomotives. But the main application of the proposed converter is not the locomotive application, but the use of low-frequency transformers to reduce the high voltage from the catenary to a supportable voltage for the semiconductors.
Proceedings ArticleDOI

High-power galvanically isolated DC/DC converter topology for future automobiles

TL;DR: In this article, the authors presented a 2 kW three-phase dual active bridge converter (DAB3) which converts power between 42 V and 300 V and is easily scalable up to 20 kW.
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