Overview of DC–DC Converters Dedicated to HVdc Grids

Páez, Juan David; Frey, David; Maneiro, Jose; Bacha, Seddik; Dworakowski, Piotr

doi:10.1109/tpwrd.2018.2846408

Cited by 198 publications

(104 citation statements)

References 57 publications

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“…The proposed dc-dc converter topology is assessed using MATLAB/Simulink simulations, with the parameters given in Table 1. The ac-link inductance and capacitance are calculated based on (19) and (20), respectively. The obtained inductance value under rated conditions from (19) is = 92mH.…”

Section: Power Transfer Simulation Resultsmentioning

confidence: 99%

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DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity

Elgenedy

Ahmed

Aboushady

et al. 2020

IET power electron.

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The common two challenges in high voltage dc (HVDC) multi-terminal transmission are the dc fault isolation and the dc voltage stepping up/down. Additionally, interconnecting voltage source converter (VSC) and line commutated converters (LCC) based HVDC network topologies has been challenging. This paper, introduces a new dc-dc converter topology concept connecting both LCC and VSC based HVDC networks with bidirectional power flow without operation stoppage. The proposed topology is formed of two front-to-front connected bridges with an ac-link formed of a capacitor and an inductor (which can be replaced by a transformer for voltage step up/down). The LCC-HVDC network bridge is formed of insulated gate commutated thyristors while the VSC-HVDC network bridge is formed of insulated gate bipolar transistors. Therefore, ON/OFF switching of both bridges and bi-directional power flow are possible. Moreover, the reactive power transfer is nullified at rated active power exchange between the proposed converter bridges. The proposed concept detailed analysis and control equations are introduced. Different operation scenarios are simulated. In addition to a scaled-down experimentation to test the applicability of power transfer scenarios without operation stoppage in normal operation.

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Section: Power Transfer Simulation Resultsmentioning

confidence: 99%

“…Several DAB dc-dc topologies have been proposed in literature for either connecting VSC-HVDC networks; or LCC-HVDC networks [9]- [16]. Generally, dc-dc converters can be divided into three main groups as follows [17]- [19]:  Single-stage dc-dc converter. In this category, the same current flows between input and output.…”

Section: Introductionmentioning

confidence: 99%

DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity

Elgenedy

Ahmed

Aboushady

et al. 2020

IET power electron.

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“…Chosen DC-DC interconnections have been presented in Table 2. The general approach which can be observed for a few years in the power industry is to develop an integrated system to fully utilize the potential of the wind farm and provide savings in space [16,21]. HVAC has the advantage to operate with relatively inexpensive terminals whereas HVDC needs to apply quite costly power converter stations.…”

Section: Hvac Vs Hvdcmentioning

confidence: 99%

Evolution of the HVDC Link Connecting Offshore Wind Farms to Onshore Power Systems

Ryndzionek

Sienkiewicz

2020

Energies

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This paper presents an overview of the DC link development and evolution dedicated to HVDC structure for connecting offshore wind power plants to onshore power systems. The growing demand for the green energy has forced investors in power industry to look for resources further out at sea. Hence, the development of power electronics and industrial engineering has enabled offshore wind farms to be situated further from the shore and in deeper waters. However, their development will require, among other technologies, DC-DC conversion systems. The advantages of HVDC over HVAC technology in relation to transmission distance are given. The different HVDC configurations and topologies of HVDC converters are elucidated. In this context, the HVDC grids are a promising alternative for the expansion of the existing AC grid.

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“…This paper presents traditional buck and boost quadratic converter which comprises of DC-DC boost converter with a coupled inductor for the distributed generation system [3]. Basic step-up converters give higher voltage gain but these converters face the issue due to limited reverse recovery issue of diode and power losses [4][5][6][7][8][9]. For obtaining proposed converter for higher voltage gain, two inductors and capacitors have been used [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Bi-directional DC-DC Buck-Boost Quadratic Converter for Energy Storage Devices

Dubey¹,

Sharma²

2019

International Journal of Innovative Research in Electrical, Ele

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The rapid use of renewable and sustainable energy sources in distributed generation system, the importance of energy storage devices forcing the researches to develop new key technologies. For continual power deliver, make greater use of renewable electricity sources, together with solar and wind. Power electronic converters are mostly connected among the different voltage buses and storage systems. Bidirectional dc-dc converter topologies are used for providing charging or discharging. This paper presents the quadratic nature for obtaining higher voltage gain ratios in step-down (buck) and step-up (boost) converter's operating states with reduced charging and discharging ripples. Proposed scheme has been developed and analyzed using MATLAB/ simulink.

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Overview of DC–DC Converters Dedicated to HVdc Grids

Cited by 198 publications

References 57 publications

DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity

DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity

Evolution of the HVDC Link Connecting Offshore Wind Farms to Onshore Power Systems

Analysis of Bi-directional DC-DC Buck-Boost Quadratic Converter for Energy Storage Devices

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