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Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 14 z 14
Janouš, Štěpán
Nové koncepce pohonných jednotek pro moderní dopravní systémy

This thesis deals with the development of model predictive control of ac electric drives with long prediction horizons and yet with computational cost of the algorithm comparable to conventional cascade control approaches. The basic idea is to approximate the cost to go function of...

Jára, Martin
Nové topologie polovodičových měničů s vysokou účinností

This thesis is focused on the development of high-efficiency power electronics converters especially in the field of light traction applications. Primarily, it deals with the auxiliary drives of trolleybuses and with the wireless charging system for electric vehicles. The first part describe...

Majorszký, Jan
Stabilita moderního trakčního pohonu

This thesis deals with DC link harmonics influence on traction drives stability. Stability of traction drive is assessed from frequency characteristics of traction drives, which mean dependences of magnitudes and phases of excited oscillations on magnitudes and frequencies of exciting oscillation...

Janík, Dušan
Inteligentní pohony a mechatronické systémy s vestavěnou inteligencí

This dissertation deals with the problematics of multilevel converter control. The designed control algorithm has to be able to select such switching combination, which secures proper output voltage control and balancing of the voltage on single components of the converter, if required. ...

Bouzek, Lukáš
Elektromagnetické pole, síly, chvění a hluk v elektrických strojích

This thesis deals with vibrations and their association with adverse noise effects. Specifically, the work is focused on determining the modal parameters of stator system of small asynchronous machines. The first part describes briefly the general sources of vibrations that may occur in...

Uzel, David
Nové topologie elektrických pohonů s důrazem na trakční aplikace

The doctoral thesis features the issue of modeling, control and parameter identification of the salient pole synchronous motors. The synchronous motor with permanent magnets on the rotor (IPMSM) and classical synchronous motor with wound salient pole rotor (WRSM) are investigated. The ...

Košan, Tomáš
Moderní mikroprocesorové regulátory

This doctoral thesis is focused on the issue of multilevel converter control and using FPGA for computationally intensive algorithms for motor control. The implementation of these tasks is closely related to an appropriate control hardware - the microprocessor (digital) controller. In the&#x...

Los, Miroslav
Využití přímých měničů kmitočtu pro trakční pohony

This work deals with the reduction of the traction equipment. Weight reduction is achieved here using medium?frequency traction transformer instead of the conventional 50 Hz (16.7 Hz) traction transformer. Medium?frequency transformer is several minor then conventional, but it requires increasing the ...

Streit, Luboš
Akumulační systém pro vozidla lehké trakce

This dissertation thesis deals with the suitable power management strategies of the energy storage system in vehicles with enhanced energy efficiency. The thesis describes the tram simulation model running on the line no. 4 in Pilsen. The simulation model was created by using the&#...

Vošmik, David
Nové topologie elektrických pohonů s důrazem na trakční aplikace

This PhD. thesis deals with a sensorless (encoderless) control of a drive with a synchronous motor with permanent magnets on the surface of a rotor (PMSM). First chapter describes motivations for the presented research and state of the art. A referential vector control in Cart...

Bárta, Petr
Komunikační a diagnostické systémy moderních trakčních vozidel

This thesis deals with vehicle control system of urban light rail vehicles and their communication in more vehicle trains. The first part contains an analysis and complex description of the control system of existing vehicles and formulates the fundamental deficiencies to ensure the...

Sirový, Martin
Moderní systémy řízení a regulace pro energetiku

The high-power pump and fan applications are among the main electricity appliances in a worldwide scale. Concurrently, these applications have a very significant energy-saving potential arising especially from development of high-power electronics and/or frequency converters enabling energy efficient ...

Matuljak, Ivan
Moderní systémy kompenzace zemních poruch v rozvodné soustavě s využitím výkonové elektroniky

This thesis deals with the use of power electronics converters for compensation of ground capacitive current (fault current) in the place of one line-to-earth connection at the distribution networks. The main part of the thesis deals with the design and dimensioning of the power&#x...

Talla, Jakub
Adaptivní řízení elektrických pohonů

The dissertation thesis deals with estimation of selected quantities in the field of electric drives and active power filters. The first part of this work is concerned to estimation of velocity and rotor position of two types of electric drives. First drive employs a switched&...

Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 14 z 14