scholarly journals Argon/dust and pure argon pulsed plasmas explored using a spatially-averaged model

2020 ◽  
Vol 54 (6) ◽  
pp. 065202
Author(s):  
I B Denysenko ◽  
I Stefanović ◽  
M Mikikian ◽  
E Kovacevic ◽  
J Berndt
Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4150
Author(s):  
Lluís Monjo ◽  
Luis Sainz ◽  
Juan José Mesas ◽  
Joaquín Pedra

Photovoltaic (PV) power systems are increasingly being used as renewable power generation sources. Quasi-Z-source inverters (qZSI) are a recent, high-potential technology that can be used to integrate PV power systems into AC networks. Simultaneously, concerns regarding the stability of PV power systems are increasing. Converters reduce the damping of grid-connected converter systems, leading to instability. Several studies have analyzed the stability and dynamics of qZSI, although the characterization of qZSI-PV system dynamics in order to study transient interactions and stability has not yet been properly completed. This paper contributes a small-signal, state-space-averaged model of qZSI-PV systems in order to study these issues. The model is also applied to investigate the stability of PV power systems by analyzing the influence of system parameters. Moreover, solutions to mitigate the instabilities are proposed and the stability is verified using PSCAD time domain simulations.


Author(s):  
Savvas Lampridis ◽  
Sofoklis Mitsos ◽  
David R. Lawrence ◽  
Nikolaos Panagiotopoulos

Lung decortication for the treatment of chronic pleural empyema remains a technically challenging procedure that is associated with bleeding and air leak. The recent advent of pure argon plasma has provided thoracic surgeons with an electrically neutral energy source for dissection and coagulation of pulmonary tissue with minimal depth of necrosis. In this article, we describe the technique of lung decortication with argon plasma energy (PlasmaJet, Plasma Surgical, Roswell, GA, USA) for the treatment of chronic pleural empyema. With appropriate application, the PlasmaJet can facilitate the removal of fibrous cortex with satisfactory hemostasis and aerostasis. Argon plasma energy can potentially be a useful adjunct in lung decortication. Controlled trials are needed to determine its role in the surgical management of advanced pleural empyema.


2009 ◽  
Vol 19 (1) ◽  
pp. 015001 ◽  
Author(s):  
E G Thorsteinsson ◽  
J T Gudmundsson
Keyword(s):  

2008 ◽  
Vol 668 (3) ◽  
pp. 167-170 ◽  
Author(s):  
C.M.B. Monteiro ◽  
J.A.M. Lopes ◽  
J.F.C.A. Veloso ◽  
J.M.F. dos Santos
Keyword(s):  

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