Blocking behaviors of crosstalk-free optical Banyan networks on vertical stacking [PDF]
, 2003 Banyan networks are attractive for constructing directional coupler (DC)-based optical switching networks for their small depth and self-routing capability.
Horiguchi, S. +3 more
core +2 more sources
Modeling of MMCs With Controlled DC-Side Fault-Blocking Capability for DC Protection Studies [PDF]
IEEE Transactions on Power Electronics, 2020 Fault current characteristics in dc systems depend largely on the response, and hence also the topology, of the ac–dc converters. The presently used ac–dc converter topologies may be categorized into those with controlled or uncontrolled fault-blocking capability and those lacking such capability.
Willem Leterme +3 more
openaire +4 more sources
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
doaj +1 more source
DC fault protection strategy considering DC network partition [PDF]
, 2016 This paper investigates DC network partition and alternative DC fault protection strategy for Multi-terminal HVDC (MTDC) system. Fast acting DC Circuit Breakers (DCCBs) or fault blocking DC-DC converters can be configured at strategic locations to allow ...
Rahman, Md Habibur +2 more
core +1 more source
Protection strategy for multi-terminal DC networks with fault current blocking capability of converters [PDF]
, 2017 High voltage dc networks are a promising technology to flexibly transmit power over long distances. However, dc grid protection is still a major challenge. DC fault clearance can be mainly achieved with three devices. These are ac circuit breakers (ACCBs)
Adamczyk, A. +5 more
core +1 more source
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
doaj +1 more source
Imaging regulatory T cell dynamics and CTLA4-mediated suppression of T cell priming [PDF]
, 2015 Foxp3(+) regulatory T cells (Tregs) maintain immune homoeostasis through mechanisms that remain incompletely defined. Here by two-photon (2P) imaging, we examine the cellular dynamics of endogenous Tregs.
Cahalan, Michael D +9 more
core +3 more sources
A back to back multilevel converter for driving low inductance brushless AC machines [PDF]
, 2007 Traditionally, multilevel converters are utilised in medium voltage applications, allowing the DC-link voltage to exceed the switch maximum blocking voltage.
Bingham, Chris +3 more
core +1 more source
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
doaj +1 more source
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
doaj +1 more source