Weak-Grid Tolerant Positive- and Negative-Sequence Current Control of Voltage-Source Converters [PDF]
2021 IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe), 2021 Peer ...
Kukkola, Jarno +4 more
openaire +3 more sources
Co-ordinated Control Strategy for Hybrid Wind Farms with PMSG and FSIG under Unbalanced Grid Voltage Condition [PDF]
, 2016 This paper investigates a control strategy for a wind farm with the direct-driven permanent-magnet synchronous generators (PMSG)-based wind turbines and the fixed speed induction generators (FSIG)-based wind turbines under unbalanced grid voltage ...
Chen, Zhe +5 more
core +2 more sources
Control of DFIG based wind generation systems under unbalanced network supply [PDF]
, 2007 This paper develops a dynamic model and control scheme for DFIG systems to improve the performance and stability under unbalanced grid conditions. A dynamic DFIG model containing the positive and negative sequence components is presented using stator ...
Wang, Yi, Xu, L.
core +1 more source
IEEE Open Journal of the Industrial Electronics Society, 2021 The growing relevance of voltage source converters (VSCs), and the deep impact they have on the development and maintenance of the electrical grid, increase the necessity of further research on how to deal with nonideal grid conditions from the VSCs ...
Pablo Montero-Robina +3 more
doaj +1 more source
Characteristics of broadband lightning emissions associated with terrestrial gamma ray flashes [PDF]
, 2011 To characterize lightning processes that produce terrestrial gamma ray flashes (TGFs), we have analyzed broadband (
Cummer, Steven A. +5 more
core +2 more sources
Unbalanced Current Sharing Control in Islanded Low Voltage Microgrids
Energies, 2018 This paper reports a new control strategy to improve sharing of unbalanced currents in islanded LV microgrids. This technique provides fast and effective sharing of positive-, negative- and zero-sequence currents, and is the first example of zero ...
Foad Najafi +2 more
doaj +1 more source
A comparative study of methods for estimating virtual flux at the point of common coupling in grid connected voltage source converters with LCL filter [PDF]
, 2016 Grid connected Voltage Source Converters (VSCs) with LCL filters usually have voltage measurements at the filter capacitors, while it can be important to control the active or reactive power injection at the grid-side of the LCL filter, for instance at a
Candela García, José Ignacio +5 more
core +1 more source
Turn-to-Turn Fault Diagnosis on Three-Phase Power Transformer Using Hybrid Detection Algorithm
Applied Sciences, 2021 A power transformer (PT) in power generation or transmission is critical to maintaining electrical continuity. Fault detection on a PT is needed, especially of incipient faults, which are often caused by a turn-to-turn fault (TTF) before it develops into
Chien-Hsun Liu +2 more
doaj +1 more source
Research on Life Loss of Generator Retainer Caused by Negative Sequence Current [PDF]
Journal of Physics: Conference Series, 2021 Abstract With a large number of wind and solar power sources connected to the power grid, higher requirements are put forward for the power generation equipment to respond to the power grid imbalance. The safety research of generator rotor retaining ring under the impact of negative sequence current is of great significance.
Yong Wang +3 more
openaire +1 more source
Conditioned emergence: a dissipative structures approach to transformation [PDF]
, 1999 This paper presents a novel framework for the management of organisational transformation, defined here as a relatively rapid transition from one archetype to another.
Aaker +72 more
core +1 more source