A high-speed HVDC breaker topology with integral voltage-changing capability

Sellick, R L; Agamy,; Hao, Liwei; Weeber, KR

doi:10.1109/icacact.2014.7223578

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…Nevertheless, regarding the MFT, a feasibility study should be carried out. The key issue concerns the high-voltage isolation requirement due to the series connection of the elementary DC/DC converters [47,48] and thermal aspects due to the higher power density [27][28][29][30]37]. Regarding these technological challenges, it is still too early to determine if the use of SiC MOFETs and MFTs would have an economical interest in off-shore wind farms.…”

Section: Resultsmentioning

confidence: 99%

Potential of silicon carbide MOSFETs in the DC/DC converters for future HVDC offshore wind farms

2017

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High-voltage direct current (HVDC) is more and more often implemented for long distance electrical energy transmission, especially for offshore wind farms. In this study, a full DC offshore wind farm, which requires a high-power and high-voltage DC/DC converter, is considered. In order to reduce the size of the converter, the trend is to increase operating frequency. Silicon carbide (SiC) metal-oxide-semiconductor field-effect transistors (MOSFETs) are becoming industrially available and give scope for the realisation of high-performance DC/DC converters based on modular architectures. This study presents a prospective analysis of the potential of such devices in HVDC power systems. Considering the characteristics of Si insulated-gate bipolar transistor and SiC MOSFET power modules, two DC/DC converter topologies are compared in terms of losses and number of components. In conclusion, a study of the efficiency based on converter energy loss is presented.

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Section: Resultsmentioning

confidence: 99%

Potential of silicon carbide MOSFETs in the DC/DC converters for future HVDC offshore wind farms

2017

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“…In [112], a double switch topology of a DC/DC converter along with some modifications is presented. In [113], a bidirectional LLC DC/DC converter as a DC CB is investigated. The proposed converter is designed to minimize the physical footprint and maximize operational efficiency.…”

Section: B Solid-state DC Circuit Breakersmentioning

confidence: 99%

HVDC Circuit Breakers: A Comprehensive Review

Mohammadi

Rouzbehi

Hajian

et al. 2021

IEEE Trans. Power Electron.

106

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High Voltage Direct Current (HVDC) systems are now well-integrated into AC systems in many jurisdictions. The integration of Renewable Energy Sources (RESs) is a major focus and the role of HVDC systems is expanding. However, the protection of HVDC systems against DC faults is a challenging issue that can have negative impacts on the reliable and safe operation of power systems. Practical solutions to protect HVDC grids against DC faults without a widespread power outage include (1) using DC Circuit Breakers (CBs) to isolate the faulty DC-link, (2) using a proper converter topology to interrupt the DC fault current, and/or (3) using high power DC transformers and DC hubs at strategic points within DC grids. The application of HVDC CBs is identified as the best approach that satisfies both DC grids and connected AC grids' requirements. This paper reports a comprehensive review of HVDC CBs technologies, including recent significant attempts in the development of modern HVDC CBs. The functional analysis of each technology is presented. Additionally, different technologies based on information obtained from literature are compared. Finally, recommendations for the improvement of CBs are presented.

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“…The main challenge of this multi-cell topology is the medium frequency transformer (MFT) insulation, especially for HVDC applications. Even if a high voltage insulated MFT has been reported [12] it seems that for the moment these multi cell converters are more viable for MVDC applications.…”

Section: Introductionmentioning

confidence: 99%

Design of a SiC based triple active bridge cell for a multi-megawatt DC-DC converter

Maneiro

Ryndzionek

Lagier

et al. 2017

2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)

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The paper describes the design methodology of a novel Triple Active Bridge cell used as the building block for modular DC-DC converters. The intended application is for Medium Voltage Direct Current grids, such as the DC collector for offshore wind farms. The latest generation of SiC MOSFET semiconductors is utilized to operate in the medium frequency range while optimizing the efficiency. The dimensioning of the main cell components, including semiconductors, transformer and DC capacitors is presented. The cell mechanical integration and cooling are also addressed.

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A high-speed HVDC breaker topology with integral voltage-changing capability

Cited by 5 publications

References 3 publications

Potential of silicon carbide MOSFETs in the DC/DC converters for future HVDC offshore wind farms

Potential of silicon carbide MOSFETs in the DC/DC converters for future HVDC offshore wind farms

HVDC Circuit Breakers: A Comprehensive Review

Design of a SiC based triple active bridge cell for a multi-megawatt DC-DC converter

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