The goal of the postgradual doctoral (PhD) study is the education for scientific work in the area of power electrical engineering and power systems. Graduates of PhD find occupation either as scientific or research workers including industrial development, either as universty teachers and in higher manager functions as well

PhD-graduate obtains high theoretical knowledge and will learn to solve complicated scientific and technological problems by oneself PhD-graduate is ready for further professional rise with a high degree of adaptivity Graduates of PhD find occupation either as scientific or research workers including industrial development, either as universty teachers and in higher manager functions as well

The graduate obtains broad knowledge of subject of high power engineering. The knowledge is build mainly on theoretical background of the subject. Moreover the graduate will obtain deep special knowledge aimed in direction of his/her thesis. The graduate will be able to perform scientific and/or applied research based on up to date theoretical knowledge. The graduate will be able to organize and lead a team of researchers in the studied subject.

prof. Ing. Jiří Skalický, CSc.

1. Elimination of discontinuous supply of electrical energy of renewable sources

   Stability of electric power supply is - as a term - closely related with electrical energy production gained from renewable power sources (mainly from wind and photovoltaic power plants). The research will be focused on possibilities of accumulation of electric energy produced from renewable power sources with the help of modern technologies while focusing on helium utilization and pumped storage hydro plants for its accumulation. The aim of the research is the design of accumulation system which can solve time disproportion between electrical energy supply and take-off from the renewable power sources. The solution is connected with computer simulation and experimental measuring on a real model.

   Supervisor: Mastný Petr, doc. Ing., Ph.D.

2. LED based lamps for railway applications

   Topic is focused on the LEDs spectro-radio-photometric parameters and characteristics research with regard to their colour rendering and change of the photometric parameters in luminaries for signalling and illuminating systems for railway applications. Aim of the project is proposal of a methodology for white LEDs colour rendering evaluation and determination of required LED parameters for illumination. Furthermore complex mechanical, electrical and optical design of luminaries for train's external illuminating system with prototypes realization is expected. The problem is a part of research at Department of Electrical Power Engineering supported by the grant projects. Cooperation with Unicontrols-Tramex company is supposed. More information: drapela@feec.vutbr.cz.

   Supervisor: Drápela Jiří, prof. Ing., Ph.D.

3. Modeling of the dispersed power generation influence on the grid power quality

   Power generation using renewable power sources and preferably at point of demand is certainly way to satisfaction of ever-increasing need for the environmental protection. Nevertheless, operation of such power generation units leads to physical-technical-economical problems like hardly specifiable power supply reliability, huge time irregularity of the power supply for example under varying climatic conditions, generation of distorted voltages, etc. Thesis is focused on modeling and simulation of the following type power units: combustion engine-induction generator, wind turbine-induction generator, Photovoltaic generator-power inverter, etc. The simulation should be performed for their connection to a representative low and middle voltage power grid, with evaluation of their influence on the voltage characteristic for each power grid node. Cumulative effect of the distributed power units over the power grid is significant as well. The problem is a part of research at Department of Electrical Power Engineering supported by the grant projects. More information: drapela@feec.vutbr.cz.

   Supervisor: Drápela Jiří, prof. Ing., Ph.D.

4. Modelling and Analysis of Claw-pole Alternator Parameters

   3D - model of the claw pole alternator, analysis, characteristics

   Supervisor: Hájek Vítězslav, prof. Ing., CSc.

5. New flickermeters in time and frequency domain development and realization

   One of the major problems in power quality is a voltage fluctuation that causes fluctuation of luminous flux of light sources and the disturbing light flicker can occur consequently. Fluctuation of supply voltage caused by fluctuating load is primary viewed, for historical reason, as a reason of lamps flicker. From another point of view, a voltage magnitude fluctuation could be introduced also by subharmonic and/or interharmonic components superimposed on a voltage waveform. With the constant increase of applications that employ power electronic devices, sub- and interharmonics in frequency range up to 2.5 kHz are becoming more prevalent in the power system. These frequency components can also vary lamps luminous flux and cause the visible irritating flicker. For the flicker perception ratio measurement there was designed UIE/IEC flickermeter which is based on response measurement of the incandescent bulb - human eye - brain scheme to the voltage fluctuation. The boundary interharmonic frequency of a voltage AM is approx. double of fundamental system frequency (f1) and for this reason the response of the standard UIE/IEC flickermeter to interharmonic voltages is also up to 2* f1. Nevertheless, high frequency voltage interharmonics (over 100 Hz) are likewise able to produce light flicker. That is valid for all other lamps, except incandescent. Thesis is focused on the voltage fluctuation to lamps luminous flux fluctuation transfer analysis, on the utilization of the analysis results firstly for a modification of the current time domain based flickermeter design and secondly for proposal of a new frequency based flickermeter concept. The thesis aim is the realization of the new flickermeter types implemented in Lab View environment, with the experimental function verification. The thesis covers theoretical-analytical, developmental and also practical-experimental part of study. The problem is a part of research at Department of Electrical Power Engineering supported by the grant projects. Cooperation with the domestic PQ monitors manufacturers is supposed. More information: drapela@feec.vutbr.cz.

   Supervisor: Drápela Jiří, prof. Ing., Ph.D.

6. Optimization of Selected Type Small Electric Machines.

   Optimization of small electric machines - methods, criterion, application.

   Supervisor: Hájek Vítězslav, prof. Ing., CSc.

7. Radiation in thermal plasmas

   Solution of energy balance in an arc plasma with respect to the radiative heat transfer. Application of partial chcaracteristics method to various kinds of arc plasmas. The main goal is a prediction of radiation intensity in the arc plasma with given temperature profile together with an analysis of radatove heat transfer role in the energy balance. Other results will be computed radial temperature profiles and E-I curves for a wall-stabilized arc burning in various gases.

   Supervisor: Aubrecht Vladimír, prof. RNDr., CSc.

8. Technology of processing carbon dioxide produced from energy procedures

   The aim of the dissertation thesis is to define and subsequently optimize the procedures of processing the carbon dioxide from the power plants within the Czech Republic. Designed technique of liquidation CO2 will be under reviewed from power viewpoint of the production process and part of will be also economics evaluation of single progression.

   Supervisor: Mastný Petr, doc. Ing., Ph.D.