Results 51 to 60 of about 3,398 (227)

Resilience Enhancement Method for Rural Distribution Network Considering Lifeline Load Energy Demand via Hydrogen‐Integrated Energy Systems Under Extreme Cold Disasters

open access: yesEnergy Internet, EarlyView.
ABSTRACT In recent years, extreme cold disasters have occurred frequently worldwide. The security of rural distribution network is threatened. The current research on enhancing the resilience of distribution network fails to consider the changes in the operating characteristics and efficiency of equipment under extreme cold disasters.
Zhigang Zhang   +5 more
wiley   +1 more source

A comprehensive review of coordinated operation of transmission‐distribution networks: Frameworks, problems and future trends

open access: yesEnergy Conversion and Economics, EarlyView.
Abstract The rapid growth of distributed energy resources (DERs) is reshaping the operational landscape of transmission and distribution networks, creating new challenges for maintaining system‐wide security, economic efficiency and flexibility. Transmission‐distribution (T‐D) coordination has emerged as an essential paradigm for facilitating multi ...
Yining Yang   +4 more
wiley   +1 more source

AC/DC converter with DC fault suppression for aircraft +/- 270 VDC distribution systems [PDF]

open access: yes, 2015
The increasing electrical demand in commercial and military aircraft justifies a growing need for higher voltage DC primary distribution systems. A DC system offers reduced power losses and space savings, which is of major importance for aircraft ...
Burt, Graeme   +4 more
core   +1 more source

Influence of Surface Area Calculation Methods on the Interpretation of Lithium‐Ion Diffusion Coefficient in Graphite Electrodes

open access: yesChemElectroChem, Volume 13, Issue 7, 1 April 2026.
Accurate determination of the lithium‐ion diffusion coefficient requires a consistent definition of active surface area. Applying galvanostatic intermittent titration technique and intermittent current interruption to a commercial graphite electrode, we quantify how three common approximations—geometrical area (AGA), scanning electron microscopy ...
Alessandro Gregucci   +2 more
wiley   +1 more source

Research on transient AC overvoltage suppression method of DC sending end based on novel fast-excitation MCR

open access: yesInternational Journal of Electrical Power & Energy Systems
The growing reliance on high-power high-voltage direct current (HVDC) transmission systems has intensified challenges associated with transient AC overvoltage induced by commutation failures resulting from converter operation characteristics.
Xiyu Yin   +6 more
doaj   +1 more source

A hybrid modular multilevel converter for medium-voltage variable-speed motor drives [PDF]

open access: yes, 2017
Modular multilevel converters (MMC) have revolutionized the voltage-sourced converter-based high-voltage direct current transmission, but not yet got widespread application in medium-voltage variable-speed motor drives, because of the large capacitor ...
Finney, Stephen J.   +4 more
core   +1 more source

Series Connection of LCC and Full Bridge MMC With DC Fault Ride‐Through Capability for Lightweight HVDC Transmission

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
In this work, we investigate a lightweight HVDC converter topology that combines the strengths of line‐commutated converters (LCC) and full‐bridge modular multilevel converters (MMC) to address the high cost and large footprint of conventional HVDC stations.
Yang Wang   +7 more
wiley   +1 more source

Suppression of AC overvoltage at sending end under DC transmission system fault based on controllable energy dissipation

open access: yes电力工程技术
In the conventional high voltage direct current transmission system with large-scale new energy access, when commutation failure or DC blocking occurs at the receiving end, the reactive power surplus at the sending converter station may cause overvoltage
Yongrui HUANG   +5 more
doaj   +1 more source

Flexible composite suppression method for ground arc in resonant grounding system

open access: yesHigh Voltage, 2023
A current‐voltage composite controller for an arc suppression inverter is designed. The current and voltage at the fault point are reduced by injecting current and regulating the neutral point voltage to completely eliminate the risk of fire and ...
Jianzhang You   +3 more
doaj   +1 more source

Recent advances in on-line PDs’detection in power conversion chains used in aeronautics. [PDF]

open access: yes, 2017
At the dawn of this new millennium, transportations facing a much greener approach, the main aircrafts manufacturers have to change their paradigms: to replace the combination of hydraulic, pneumatic, electrical and mechanical power by a « More » (and ...
Abadie, Cédric   +2 more
core   +1 more source

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