Smart modul integrated in power plug

Cílem této práce je seznámení se s technologií Powerline Communication a výběr vhodného typu širokopásmového integrovaného obvodu pro integraci širokopásmového komunikačního modulu do elektroinstalační krabice. V úvodu této práce je podrobně rozebrána technologie Powerline Communication, princip komunikace, jednotlivé typy technologie, faktory ovlivňující kvalitu přenosu, současné možnosti a vytyčení cílů nutných pro návrh modulu. Výsledkem je miniaturizovaný funkční prototyp plně integrovaného širokopásmového PLC modemu v elektroinstalační krabici.The aim of this work is focus on Powerline Communication technology and select a suitable type of broadband integrated circuit for the integration of a broadband communication module into an electrical installation box. In the introduction of this work, the Powerline Communication technology, the principle of communication, individual types of technology, factors influencing the quality of transmission, current possibilities and setting goals necessary for the design of the module are analyzed in detail. The result is a miniaturized functional prototype of a fully integrated broadband PLC modem in a wiring box.

Methodology for PLC evaluation in Smart Metering

Cílem této práce je získat základní znalosti o technologii PLC a provedení sady měření, zaměřující se na hlavní parametry této technologie a také provést sadu krátkodobých měření PLC komunikace ve Smart Metering systémech a navrhnout metodiku pro otestování dvou reálných systému. Měření bylo prováděno v laboratorních podmínkách na připravených úlohách, které pokrývaly všechny druhy dané technologie, jak širokopásmovou, tak úzkopásmovou s jednou i více nosnými. Dále byla navržena metodika pro testování PLC komunikace ve Smart Metering systémech, která byla aplikována na dva systémy využívající odlišné technologie. Na základě dosažených výsledků pak bylo rozhodnuto, který ze dvou systému je podle provedené metodiky a sady krátkodobých měření vhodnější pro reálné použití.The aim of this work is to acquire basic knowledge about PLC technology and to make a set of measurements focusing on the main parameters of this technology as well as to perform a set of short-term measurements of PLC communication in Smart Metering systems and to design a methodology for testing two real systems. Measurements were made in laboratory conditions on prepared tasks that covered all types of technology, both broadband and narrowband with one or more carriers. In addition, a methodology for testing PLC communications in Smart Metering systems was developed, which was applied to two systems using different technologies. On the basis of the results achieved, it was decided which of the two systems is more suitable for real use according to the methodology and set of short-term measurements.

Study of the microstructure, tensile properties and hardness of AZ61 magnesium alloy subjected to severe plastic deformation

Hot extruded (EX) AZ61 magnesium alloy was processed by the twist channel angular pressing (TCAP) method, which combines equal channel angular pressing (ECAP) and twist extrusion (TE) processes and significantly improves the efficiency of the grain refinement process. Both the initial hot extruded AZ61 alloy and the alloy after completion of TCAP processing were examined by using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electron backscatter diffraction (EBSD) and their corresponding micro-tensile testing (M-TT) and hardness testing at room temperature. The results showed that the microstructure of hot extruded alloy was refined well by TCAP due to dynamic recrystallization (DRX) caused by TCAP. The tensile properties, investigated by micro-tensile testing (M-TT), of the AZ61 alloy were significantly improved due to refined microstructure. The highest tensile properties including YS of 240.8 MPa, UTS of 343.6 MPa and elongation of 21.4% of the fine-grained alloy with average grain size below 1.5 mu m was obtained after the third TCAP pass at 200 degrees C using the processing route B-c.Web of Science810art. no. 77

Cable Monitoring Using Broadband Power Line Communication

Power line communication (PLC) is considered one of the possible communication technologies for applications in the field of smart metering, smart substations, smart homes, and recently for the management of renewable resources or micro grid control. This article deals with the use of PLC technology to determine the technical condition of the cable. This coefficient can help distribution system operators (DSO) to assess the condition of their cable routes. In this way, possible cable breakdowns and subsequent power outages can be prevented. The resulting methodology for calculating the coefficient is presented in two specific examples of routes, in which a significant benefit for DSO’s can be found