Results 21 to 30 of about 113,685 (217)
A High-Voltage Large-Capacity DC/DC Converter Integrated with the Function of DC Circuit Breaker
Zhongguo dianli, 2021 In recent years, high-voltage and large-capacity DC/DC converters have received more and more attention as the key equipment for voltage conversion in the DC grid.
Yue QUAN +3 more
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A new hybrid multilevel thyristor-based DC-DC converter
Alexandria Engineering Journal, 2023 The rapid growth in HVDC grids is becoming inevitable for long-distance power transmission. Therefore, the idea of interconnection between the point-to-point links becomes essential.
Yousef N. Abdelaziz +5 more
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IEEE Access, 2021 In this study, a LCC-VSC hybrid HVDC transmission system was taken as an example. The valve and neutral overvoltage of the hybrid HVDC system were simulated and then calculated at the VSC converter station by installing a blocking diode and a DC circuit ...
Wang Dongju, Zhou Hao
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DC Fault Analysis and Clearance Solutions of MMC-HVDC Systems
Energies, 2018 In this paper, the DC short-circuit fault and corresponding clearance solutions of modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems are analyzed in detail.
Zheng Xu +3 more
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IET Renewable Power Generation, 2023 Cascaded H‐bridge power electronic transformers (CHB‐PET) can efficiently connect AC/DC distribution networks, realizing power transmission and electric energy conversion.
Yongfan Guo +3 more
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Fault equivalent model for non-blocking DC fault ride-through of hybrid MMC
电力工程技术, 2023 Compared with full-bridge modular multilevel converter (MMC), the hybrid MMC composed of half bridge sub-module and full bridge sub-module has the low cost and high DC fault ride-through capability.
WANG Zeqing +5 more
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Energies, 2019 Continuous commutation failures (CFs) are serious malfunctions in line-commutated converter high-voltage direct current (HVDC) systems that cause the continuous and rapid sag of transmitted power and may threaten the stability of AC systems.
Chao Xiao +4 more
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DC Fault Analysis of Modular DC/DC Converter Employing a New Submodule With Damping-Resistor
IEEE Access, 2018 DC transformer is the key equipment to interconnect the high voltage dc systems with different voltage levels and build dc grid. Compared with the dc/ac/dc converter based on modular multilevel converter, the non-isolated modular dc/dc converter (MDCC ...
Hongcheng You +4 more
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Journal of Modern Power Systems and Clean Energy, 2020 The high-voltage direct current (HVDC) grid has been recognized as an effective solution for renewable energy integration. Currently, two main development trends for HVDC grids are being studied: a DC breaker based HVDC grid and fault-blocking converter ...
Sheng Yan +4 more
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A Multilevel Inverter Topology Using Diode Half-Bridge Circuit with Reduced Power Component
Energies, 2021 This paper presents a new multilevel converter with a reduced number of power components for medium voltage applications. Both symmetric and asymmetric structures of the presented multilevel converter are proposed.
Jagabar Sathik +7 more
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