The paper present aspects of DC electric traction system influence on electric energetic system. Study is based on modeling and simulation of electrified railway line. After simulation, there was performed analysis of energy quality, whitch using results of simulation and…

This paper deals with a decentralised power active filter control based on the separated computation of reference current for each active filter operating under determinated harmonic frequency. The basic principle of such controlled active filter is explained. It is shown…

The future of a railway operator is depending on the success of simultaneous improvement of service quality and cost effectiveness. In this paper we are going to investigate, how traffic control systems - by their developing trends - can contribute…

Short description of ERTMS system. Legal conditions of ERTMS system implementation on Polish Railway. Implemanetation study of the polot ERTMS installation for E-20 Warszawa-Kunowice. Trans-boundary section of ERTMS on the E-65 line Katowice - Bohumin. Necessity of ERTMS implementation with…

This paper describes procedure for maximization of RFID transponder read range. This is done by optimalization of magnetics field intensity at transponder place and by optimalization of antenna and transponder coils coupling factor. Results of this paper can be used…

Article deals with power analysis of traction transformer 100/27 kV, Sn= 10MVA under non-sinusoidal conditions. The power analysis is evaluated by means of IEEE Trial Use Standard Definitions of the Electric Power Quantities under Non-Sinusoidal Conditions, Document Number: IEEE 1459-2000.

Article deals with determination of circuit parameters of the traction load under non-sinusoidal conditions. The circuit parameters are defined by new integral transformation of measured non-sinusoidal voltage and current.

When a large-step input voltage is applied to an operational amplifier (OP AMP) input, the output waveform reises with a finite slope called the slex rate which is due to an amplifier input stage current limiting (Im) and because of…

In the paper the principles and application of nondestructive evalution by both electromagnetic acoustic transducer (EMAT) and the eddy current (EC) methods are introducted. The ultrasonic testing (UT) and the electromagnetic nondestructive testing (NDT) are presented with their fundamental properties…

This contribution brings numerical results of the analysis of gravitation generator. The draft was created as a part of project trying to increase safety of air traffic.