Fast Real-Time Data Exchange among Distributed Control System of STATCOM Installation

SGS-2021-021Power installations based on power converters in power transmission and power distribution require real-time control which is usually implementing using multiple control units. Therefore, very fast data exchange within constant sampling periods across whole control system is needed. This paper deals with the development and implementation of a specific communication protocol for an embedded modular control system. The communication protocol employs LVDS bus and it is designed for fast data exchange between master and slave control units. The protocol is used in control system REMCS of a STATCOM of 1.35MVA installed in distribution power grid of 22 kV

Ablation of single-crystalline cesium iodide by extreme ultraviolet capillary-discharge laser

Extreme ultraviolet (XUV) capillary-discharge lasers (CDLs) are a suitable source for the efficient, clean ablation of ionic crystals, which are obviously difficult to ablate with conventional, long-wavelength lasers. In the present study, a single crystal of cesium iodide (CsI) was irradiated by multiple, focused 1.5-ns pulses of 46.9-nm radiation delivered from a compact XUV-CDL device operated at either 2-Hz or 3-Hz repetition rates. The ablation rates were determined from the depth of the craters produced by the accumulation of laser pulses. Langmuir probes were used to diagnose the plasma plume produced by the focused XUV-CDL beam. Both the electron density and electron temperature were sufficiently high to confirm that ablation was the key process in the observed CsI removal. Moreover, a CsI thin film on MgO substrate was prepared by XUV pulsed laser deposition; a fraction of the film was detected by X-ray photoelectron spectroscopy.Web of Science65421020

Investigating the Influence of Process Fluids Produced by World Manufacturers on Technology of Drilling the Aluminium Alloy and on Quality of Machined Surface

60 s., 13 s. příl. :ilustrace, fotografie +1 CD-ROMDiplomová práce obsahuje informace o hliníku, jeho slitinách a procesních kapalinách používaných při obrábění. Dále obsahuje informace o vyhodnocování drsnosti povrchu obrobených ploch. Zabývá se vlivem zkoušených procesních kapalin na parametry drsnosti povrchu otvorů vyvrtaných do slitiny hliníku a také sleduje vliv těchto kapalin na tvorbu třísky

Influence conventional and climb milling on the durability of cemented carbide tools for machining stainless steel.

katedra: KOM; přílohy: 1 CD; rozsah: 63 s.The work contains information on the use of stainless steel industry. Describes types of tool wear on cutting edges, especially of cemented carbides. This work deals with monitoring durability of cutting inserts of cemented carbides with different qualities using climb or conventional milling of stainless steel and influence of process fluids. In addition, deals with the influence of cutting conditions on machined surface roughness.Práce obsahuje informace o použití nerezové oceli v průmyslu. Popisuje druhy opotřebení nástrojových břitů, zvláště pak ze slinutých karbidů. Tato práce se zabývá sledováním trvanlivosti výměnných břitových destiček ze slinutých karbidů různé jakosti při použití sousledného či nesousledného frézování nerezové oceli a vlivu procesní kapaliny. Dále pojednává o vlivu řezných podmínek na drsnost obrobeného povrchu

Fast Real-Time Data Exchange among Distributed Control System of STATCOM Installation

Power installations based on power converters in power transmission and power distribution require real-time control which is usually implementing using multiple control units. Therefore, very fast data exchange within constant sampling periods across whole control system is needed. This paper deals with the development and implementation of a specific communication protocol for an embedded modular control system. The communication protocol employs LVDS bus and it is designed for fast data exchange between master and slave control units. The protocol is used in control system REMCS of a STATCOM of 1.35MVA installed in distribution power grid of 22 kV

Fast Real-Time Data Exchange among Distributed Control System of STATCOM Installation

Power installations based on power converters in power transmission and power distribution require real-time control which is usually implementing using multiple control units. Therefore, very fast data exchange within constant sampling periods across whole control system is needed. This paper deals with the development and implementation of a specific communication protocol for an embedded modular control system. The communication protocol employs LVDS bus and it is designed for fast data exchange between master and slave control units. The protocol is used in control system REMCS of a STATCOM of 1.35MVA installed in distribution power grid of 22 kV