Tarptautinės konferencijos / International Conferences: Recent submissions
Now showing items 441-460 of 2385
-
Complaints about power quality and reliability of electricity supply from renewable sources
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)The significant increase in energy production from renewable sources leads to the need of exploring new ways of energy systems. Evaluation of the interruption of renewable energy sources becomes very important to assess ... -
Modeling of electromagnetic radiation propagation through a system. Source of radiation – biological object – protection tool
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)The process of electromagnetic radiation propagation through a system source of electromagnetic radiation – biological object – protection tool was simulated using mathematical modeling. Antenna patterns are calculated and ... -
Study on severity evaluation methods for air discharges of ESD generator
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)To grasp the actually injected energy into the equipment under test from an ESD-gun, based on the discharge current waveforms obtained by wide-band measurement, we estimated the amount of the charge released when the spark ... -
Quasi-TEM analysis of coupled microstrip lines on multilayered dielectric
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)Coupled microstrip lines (CMLs) are widely used for signal transmission as well as models for various microwave devices. In attempt to minimize physical dimensions of CMLs, these lines are made three dimensional using ... -
Calculation of characteristics of meander slow-wave system with additional shields
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)In this paper a study of meander slow-wave system with additional shields is performed. Aim of a study is to determine an impact of different topologies of meander edges on dispersion properties of a system. Three ... -
Objects having an impact on the environment due to the lightning stroke
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)Operations of some objects, as for instance nuclear power plants (NPP), may be influenced by several, quite difficult to prevent natural events. In this group it is possible to distinguish earthquake, hurricane, tsunami, ... -
Influence of cable routing on the flashover distance between lightning protection system and electrical equipment on a building roof
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)Lightning protection in a building requires appropriate separation distances to be kept between electrical equipment/installation and LPS (Lightning Protection System). The paper presents results of numerical calculations ... -
Evaluation of meteorological radar antenna radiation
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)The object of this paper is evaluation of antenna electromagnetic radiation results of a new meteorological radar, which planned to be installed near to Vilnius. The results must be compared with permitted level according ... -
Plasma turbulence monitoring by means of low-frequency noise satellite measurements
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)The natural, very low-frequency (VLF) noise emissions are generally looked upon as radio interference. It is incorrect. In fact, these are an effective means for diagnostics and study of dynamic environment. The years-long, ... -
Experimental investigation of electrical apical constriction finder
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)Results of experimental investigation of electric apical constriction locator with two excitation frequencies, which has been developed in Lithuania are presented. The lower frequency signal is used for compensation of the ... -
Electrical methods of apical constriction location
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)Exact measurement of distance to the apical constriction during root filling of a damaged tooth is important for endodentists. Radiologic method employing X-rays is exact and visual. But it is slow process and exposes the ... -
Multiconductor microstrip line modelling using FDTD method
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)Multiconductor microstrip lines (MML) are broadly used in various microwave devices. Signal propagation speed along each conductor of the infinite MML is the same and characteristic impedances of each conductor are the ... -
Disturbances in the controlled variable speed drive
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)Induction machines (IM) are generally used as motors for many industrial applications due to its simple construction and reliable operation. Proposed motor model is developed in a synchronous rotating reference frame. Fixed ... -
Distributed impedance as terminating load at GTEM cell
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)This paper deals with possible improvements of GTEM cell parameters to obtain such parameters of the electromagnetic (EM) field that allow the use of GTEM cell for metrological purposes, mainly for calibration of sensors ... -
Intermediate frequency noise in and from electrical power network in modern working places
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)This study presents the measurement results of high frequency noise in mains electrical system in workplaces. Measurements were taken both directly connected to the mains power network and from inside the facilities by ... -
Automated synthesis method for inhomogeneous delay systems using artificial neural networks
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)All new microwave devices, including delay systems, are designed by using computer-aided design systems which are managed by specialized software packages. Automated simulation of microwave devices using analytical and ... -
Current situation in the frequency range from 2 to 150 kHz with regard to electromagnetic compatibility
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)The frequency range from 2 to 150 kHz represents a relative gap in the sphere of electromagnetic compatibility as far as the standardization related to compatibility levels, emission limits and immunity levels is concerned. ... -
Technical aspects of electricity meters immunity tests against continuous HF disturbance
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)The paper is oriented to immunity testing of power meters with pulse output against continuous high frequency (HF) disturbance according to technical standards EN 61000-4-3 and EN 61000-4-6. By this testing it is a problem ... -
Stationary regime model of asymmetrical line
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)After occurrence of circuit in any place of a power ldinises,y ma mcoemtripcuatla tisohnoarlt scheme is augmented with an additional node. Such changes in the scheme complicate the structure of the algorithm. This paper ... -
Computer aided investigation of magnetic fields induced by CFL electronic ballasts
(22nd International Conference “Electromagnetic Disturbances EMD’2012”, 2012)The investigation results of magnetic fields induced by compact fluorescent lamp electronic ballasts are presented. For the investigation the high definition audio system of portable personal computer and spoafctkwaagree ...