Development and demonstration of a medium-voltage high-power DC-DC converter for DC distribution systems

Soltau, Nils; Stagge, Hanno; Doncker, Rik W. De; Apeldoorn, O.

doi:10.1109/pedg.2014.6878696

Cited by 93 publications

(57 citation statements)

References 24 publications

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“…, the collection MV level is boosted up to HVDC transmission level by a high voltage (HV) DC-DC converting platform. High-power DC-DC converters are one of main technologies to interconnect with DC grids [4][5][6][7][8][9]. The 3DAB Converter, which is suitable for high-power application, has been studied in [6][7][8][9].…”

Section: Fig 1: Configurations Of DC Grid For Offshore Wind Farmmentioning

confidence: 99%

A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms

Lee

Vakil

Feldman

et al. 2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractThis paper presents the steady-state analysis of a high power step-up DC-DC converter based threephase dual active bridge (3DAB) for use as a medium voltage (MV) DC-DC collector of offshore wind farms. An optimization procedure for a high-power medium frequency transformer is explained and moreover, a design of an optimal control phase shift angle is explained and verified through simulation. The comparisons with two scenarios are presented: 4MW converters for power conversion from low dc voltage (LVDC) of the wind turbine output terminal to 40kV MVDC grid of offshore wind farms. The proposed 3DAB DC-DC converter is investigated for the given scenarios in terms of losses of the semi-conductors and the magnetic part as well as the quantity of semi-conductors.

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Section: Fig 1: Configurations Of DC Grid For Offshore Wind Farmmentioning

confidence: 99%

A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms

Lee

Vakil

Feldman

et al. 2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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“…DC buses on each side provide power flow through the TAB converter. TAB converters have been proposed to be essential for DC distribution systems because they connect not only the DC grids but also a DC energy storage to a DC distribution bus (12)- (14) . Moreover, the transformer in a TAB converter can provide power flow control with isolation, which can provide safety between different voltage inputs.…”

Section: Introductionmentioning

confidence: 99%

A DC Power Distribution System in a Data Center using a Triple Active Bridge DC-DC Converter

Masumoto

Wãda

et al. 2018

IEEJ Journal IA

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In recent years, the demand for high-reliability systems has been on the rise, while DC power distribution systems are widely used in data centers. The authors propose a DC power distribution system that uses a triple active bridge (TAB) DC-DC converter, toward the realization of such higher-reliability systems. The TAB converter is based on an isolated DC-DC converter and can control the DC power flow among the three ports. First, this paper presents a basic power flow control procedure of the TAB converter, using a phase-shift control. Further, two types of higher-reliability DC power distribution systems are proposed using the TAB converter. The experimental design and simulations of a prototype 200-V TAB converter with 500-W power, connected with the single and double loads, are reported. In the experiment, the 200-V TAB converter rated at a power of 500 W was constructed from a three-winding transformer and gallium nitride (GaN) power devices. Smooth output waveforms indicate good controllability of the power flow and good functional performance of the proposed DC power distribution system.

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“…One of the most viable layouts for dc transformer is the isolated front-to-front (F2F) dc-dc converter, which originates from the dual-active-bridge (DAB) in medium voltage applications and can be extended easily to multi-port configurations, while preserving galvanic isolation [13][14][15][16]. For satisfying the requirements of HVDC systems, modular multilevel converter (MMC) using half-bridge (HB) chopper cell has been developed to reduce the switching losses and overcome the voltage level limit of using switch series connection as in the two-level VSC [17]; also, several variants of HB-MMC including hybrid topologies have been proposed in literatures, aiming for a compromise between the converter functionality and total energy storage [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Operation Analysis of Thyristor-Based Front-to-Front Active-Forced-Commutated Bridge DC Transformer in LCC and VSC Hybrid HVDC Networks

Adam

Finney

et al. 2017

IEEE J. Emerg. Sel. Topics Power Electron.

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Abstract-The active-forced-commutated (AFC) bridge employs a symmetrical thyristor-bridge with auxiliary self-commutated full-bridge chain-link (FB-CL) circuit to assist its soft transition and forced commutation. This combination can form a thyristor based voltage source converter (VSC) with significantly reduced on-state losses and dc-fault blocking capability. Due to the full topological symmetry of the AFC-bridge, either current direction or dc-link voltage polarity can be reversed for power flow reversal as for the full-bridge modular multilevel converter (FB-MMC). Thus, the AFC-bridge is compatible with both line-commutated-converter (LCC) and VSC terminals in a multi-terminal high voltage direct current (MT-HVDC) network. This paper investigates its frontto-front (F2F) dc-dc application for matching the regional dc grids in a LCC and VSC hybrid HVDC network.Simulation studies are carried out to demonstrate its potentials as a high efficiency multi-functional solution for dc-dc conversion.Index Terms-Active-forced-commutated bridge, thyristor, IGBT, high efficiency VSC, front-to-front dcdc converter, dc-link voltage reversal, LCC and VSC hybrid HVDC grid.

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Development and demonstration of a medium-voltage high-power DC-DC converter for DC distribution systems

Cited by 93 publications

References 24 publications

A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms

A high-power DC-DC converter based dual active bridge for MVDC grids on offshore wind farms

A DC Power Distribution System in a Data Center using a Triple Active Bridge DC-DC Converter

Operation Analysis of Thyristor-Based Front-to-Front Active-Forced-Commutated Bridge DC Transformer in LCC and VSC Hybrid HVDC Networks

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