Results 11 to 20 of about 2,565 (167)
Chopperless Fault Ride-Through Control for DC Microgrids [PDF]
IEEE Transactions on Smart Grid, 2021 The dc microgrid should remain connected to the ac utility grid to support the grid stability during faults. However, the bidirectional power flow between the utility grid and the dc microgrid will cause either high-voltage or low-voltage faults at the dc bus.
Yang-hong Xia, Teng Long
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Photovoltaic inverters with fault ride-through Capability [PDF]
2009 IEEE International Symposium on Industrial Electronics, 2009 This paper presents a new control strategy that allow the photovoltaic system operate under grid faults without overpass the rated current and assuring sinusoidal currents. In the classic control strategies used in photovoltaic systems the power delivered to the grid remains constant when a fault occurs, hence the current can reach dangerous values ...
Azevedo, Gustavo M.S. +4 more
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AC Fault Ride Through in MMC-Based HVDC Systems
IEEE Transactions on Power Delivery, 2022 VSC-HVDC systems are being increasingly employed in the power systems. The recently installed HVDC systems have a power capacity similar to traditional power plants. Hence, they are expected to have a similar behaviour as traditional synchronous generators during faults in AC grid, within their limits of course. Recent grid codes require HVDC converter
Saman Dadjo Tavakoli +2 more
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DC fault ride through of multilevel converters [PDF]
2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016 Modular Multilevel Converters (MMC) can provide significant advantages for power transmission applications, however there are remaining challenges trading off DC fault response, losses and controllability. Alternative multilevel converter topologies using combinations of full bridge and half bridge submodules or series switches allow for competitive ...
Geraint Chaffey +4 more
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Fault ride‐through strategy for hybrid HVDC with cascaded multi‐infeed MMC inverters
Electronics Letters, 2021 The hybrid HVDC with cascaded multi‐infeed MMC inverters suffers from the fragile characteristic of its MMC inverters and is easy to be over current and over voltage.
Jingbo Zhao +4 more
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工程科学与技术, 2023 Modular multilevel converter based high voltage direct current technology (MMC–MTDC) using overhead lines is an effective solution to solve the grid connected consumption of high proportion and long-distance renewable energy.
Yinfeng SUN +5 more
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Control Strategy for Potential Vector Remolding Fault Ride-through in Grid-forming MMC [PDF]
Dianli jianshe[Objective] The operational characteristics of the grid-forming modular multilevel converter （MMC） in offshore wind power transmission systems under short-circuit faults in the receiving-end grid are unclear， and the interaction mechanism between fault ...
FANG Chaoxiong, TANG Yuchen, LIN Yi, SHEN Hao, PAN Chao, BIAN Xiaoyan, ZHAO Jinbin
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The Journal of Engineering, 2019 Wind turbines should have fault ride through capability, and also it can provide damping for the power grid by improving the control strategy. However, the currently corresponding control strategy is designed independent for the fault voltage through ...
Haiyan Tang +3 more
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DC Fault Ride-Through Strategy Based on Overmodulation [PDF]
IOP Conference Series: Earth and Environmental Science, 2021 Abstract The hybrid modular multilevel converter (hybrid MMC) can realize DC fault ride-through based on the capability of overmodulation and can continue to output reactive power to AC side during the fault, which can speed up the recovery of DC grid power after the fault is cleared.
M Cui, K J Li, Z J Liu, L Z Li
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A DC Short-Circuit Fault Ride Through Strategy of MMC-HVDC Based on the Cascaded Star Converter
Energies, 2018 A modular multilevel converter based high voltage direct current (MMC-HVDC) with DC fault self-clearing is adopted to deal with the DC short-circuit fault.
Yingjie Wang +4 more
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