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Collection's Items (Sorted by Submit Date in Descending order): 1 to 17 of 17
Kindl, Vladimír , Byrtus, Miroslav , Skala, Bohumil , Kůs, Václav
Key assembling issues relating to mechanical vibration of fabricated rotor of large induction machines

In many applications, where rotating machines of high power are used, high demands on reliability and safety are laid. Precise manufacturing procedures has to be kept even in case of machines retrofits when e.g. rotors are newly assembled. Even small inaccuracies or misguiding the&...

Franc, Jiří , Pechánek, Roman , Kindl, Vladimír , Zavřel, Martin
Ventilation system with skewed rotor cooling ducts of 40-MW synchronous machine: a case study

This paper describes modified ventilation system and thermal analysis of low-power 40-MW turbo generator. The study compares thermal behaviour of the machine for three different arrangements of the rotor ventilation ducts. Variations of both the sub-slot and the radial ducts are analysed.&#x...

Streit, Luboš , Talla, Jakub , Janda, Martin
Tram LC filter stabilization by Energy Storage system

The paper is focused on the tram input LC traction filter stabilization by the Energy Storage System. The input LC filter is almost undamped resonant circuit which is mainly excited by the motor constant torque command. The tram during voltage drops increases the current flow&...

Blahník, Vojtěch , Košan, Tomáš , Peroutka, Zdeněk , Talla, Jakub
Control of AC/DC modular multilevel converter

In recent years, a special attention is paid to grid connected multilevel converters. These converters have specific use in industry in a high power, medium-voltage and high-voltage applications. This paper presents new control algorithm for single-phase AC/DC modular multilevel converter wi...

Danzer, Jiří
LOW - frequency currents in intermediate DC circuit of voltage inverter

Krasl, Milan
Influence of temperature on operation characteristics of electrical machine with permanent magnets

Krasl, Milan
Indirect frequency converter for the supply of the rotor of the asynchronous motor

Pitterman, Martin , Fořt, Jiří
Finite element method analysis of electromagnetic field inside pulsed power generator

Skala, Bohumil
Acceleration sensor based on the ferraris principle for rotary drives

Mach, František , Kůs, Pavel , Karban, Pavel , Doležel, Ivo
Mathematical modelling of direct current corona discharge problems in air

Mach, František , Karban, Pavel , Kůs, Pavel , Korous, Lukáš
Calculation of Force Acting on the Armature of Electromagnetic Actuator

Slouka, David , Kůs, Václav
Problematika homogenní aplikace laserového záření na rozsáhlé plochy lidské tkáně

Laser devices today are built using many different technical designs determined by their target application where a very special use have lasers in medicine. The effects of medical lasers are determined by their basic physical properties (wavelength, collimation, coherence, monochromaticity) and&...

Kůs, Václav
Necharakteristické harmonické a meziharmonické polovodičových měničů

Krasl, Milan , Vlk, Rostislav
HTS Transformer – Optimization of Winding Losses

This paper deals with a calculation of losses in winding of the superconducting transformer 1MVA. The idea of this usage was originated in the SKODA Research Ltd., Pilsen. 5kVA model of this transformer was made with co-operation AS CR, UWB Pilsen, MFF Prague, Skoda Research&#...

Hruška, Karel
Určení parametrů náhradního schématu asynchronního stroje v programu FEMM

This work deals with problems of determination of parameters of induction machine's substitution diagram using finite element method software FEMM. There are determined parameters of subtitution diagram corresponding both with stator and rotor (leakage inductances and resistivities) and magnetizing...

Blahník, Vojtěch
Palivový článek jako zdroj pro elektrický pohon - simulace

The paper deal with using of the fuel cell as a alternative electric source in light traction branch. The fuel cell is simulated by equivalent electric diagram and this diagram is used for simulation of the light traction drive. The next part is concern to control of...

Blahník, Vojtěch , Peroutka, Zdeněk , Molnár, Jan , Michalík, Jan
AC / DC converter for traction applications

This contribution deals with new configuration of the traction converter with medium-frequency transformer intended for ac trolley wire fed locomotives. The main objective of this paper is the control of primary voltage source active rectifiers connected in series and operated on the pr...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 17 of 17