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Branch detail

Power Electrical and Electronic Engineering


Abbreviation: PKA-SEE
Specialisation: -
Length of Study: 4 years
Programme: Electrical Engineering and Communication
Faculty: Faculty of Electrical Engineering and Communication
Academic year: 2017/2018
Accredited from: 25.7.2007
Accredited until: 31.12.2020
Profile of the branch:
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
Key learning outcomes:
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
Occupational profiles of graduates with examples:
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.
Branch supervisor: prof. RNDr. Vladimír Aubrecht, CSc.
Issued topics of Doctoral Study Program:
  1. Modeling of current interruption in electric fuses

    Electric fuses are protection elements widely used in low- and medium voltage power distribution networks. Fuses are typically designed to have fuse elements as segmented thin metal conductors that are embedded in silica sand. Due to over currents and short circuit currents the fuse elements are heated up and melted, an electric arc is ignited. Thus the mode of operation can be separated into a pre-arcing and a arcing phase. In the arcing phase the generated plasma is interacting with the filler medium (sand) and the fault energy is stored in the sand, leading to melting of the sand. The morphometric properties of the filler have an influence on the arc plasma, e.g. the plasma composition, thermodynamic and transport properties. The approach for this thesis is to first identify existing modeling approaches and evaluate from a numerical and result quality point of view. Starting point are existing arc models that are developed mainly for atmospheric gas discharge, but have limited validity in this application. As a second step a suitable model should be adopted or implemented and the identified model shortcomings should be addressed. The necessary transport, thermodynamic and absorption coefficients for the metal vapor and silica sand mixture need to be gathered. As a third step the model is applied to predict the interruption process for a specified fuse. By means of comparison of test results and simulation results the model accuracy and sensitivity is evaluated.

    Tutor: Kloc Petr, Mgr., Ph.D.
  2. Modeling of switching arcs in mineral oil

    Mineral oil is used as an insulation medium in medium voltage power distribution equipment, like transformers or pad mount switchgear. In different applications switching is performed by means of electromechanical contacts that are submerged in mineral oil. During contact opening, an electric arc is formed and energy is transferred into the mineral oil, mainly by heat conduction and radiation. As a result, mineral oil is vaporized and gas bubbles are formed that are interacting with the oil. Close to current zero, the gas bubble starts collapsing since the energy input is decreasing. This will change the plasma conditions like pressure and temperature, which influences the plasma decay and therefore the dielectric recovery. The main goal of the thesis is to develop and implement a stable and performant multiphase flow solver in order to be able to simulate the complex interactions that occur during arc switching/arc interruption in mineral oil. This includes the modeling of phase change (oil  oil vapor) and determining the necessary thermodynamic, transport and radiation properties. Starting point are existing arc models that are developed mainly for atmospheric gas discharged, but have limited validity in this application. In a second step the processes during recovery should be investigated, since a prediction of successful interruption is determined by the rise of transient recovery voltage vs. dielectric recovery. In a third step the model accuracy and sensitivity is evaluated by comparison with actual test results.

    Tutor: Kloc Petr, Mgr., Ph.D.

Course structure diagram with ECTS credits

Year of study 1, winter semester

Code Title L. Cr. Sem. Com. Compl. Gr. Op.

Optional specialized
FEKT-DBM1A Advanced methods of processing and an... en  4  winter OS DrEx   yes
FEKT-DTK2A Applied cryptography en  4  winter OS DrEx   yes
FEKT-DET1A Electrotechnical materials, material ... en  4  winter OS DrEx   yes
FEKT-DFY1A Junctions and nanostructures en  4  winter OS DrEx   yes
FEKT-DEE1A Mathematical Modelling of Electrical ... en  4  winter OS DrEx   yes
FEKT-DME1A Microelectronic Systems en  4  winter OS DrEx   yes
FEKT-DRE1A Modern electronic circuit design en  4  winter OS DrEx   yes
FEKT-DAM1A Selected chaps from automatic control en  4  winter OS DrEx   yes
FEKT-DVE1A Selected problems from power electron... en  4  winter OS DrEx   yes
FEKT-DTE1A Special Measurement Methods en  4  winter OS DrEx   yes
FEKT-DMA1A Statistics, Stochastic Processes, Ope... en  4  winter OS DrEx   yes

General knowledge
FEKT-DJA6A English for post-graduates cs  4  winter GK DrEx   yes
 


Year of study 1, summer semester

Code Title L. Cr. Sem. Com. Compl. Gr. Op.

Optional specialized
FEKT-DMA2A Discrete Processes in Electrical Engi... en  4  summer OS DrEx   yes
FEKT-DME2A Microelectronic technologies en  4  summer OS DrEx   yes
FEKT-DRE2A Modern digital wireless communication en  4  summer OS DrEx   yes
FEKT-DTK1A Modern network technologies en  4  summer OS DrEx   yes
FEKT-DTE2A Numerical Computations with Partial D... en  4  summer OS DrEx   yes
FEKT-DET2A Selected diagnostic methods, reliabil... en  4  summer OS DrEx   yes
FEKT-DAM2A Selected chaps from measuring techniques en  4  summer OS DrEx   yes
FEKT-DBM2A Selected problems of biomedical engin... en  4  summer OS DrEx   yes
FEKT-DEE2A Selected problems of electricity prod... en  4  summer OS DrEx   yes
FEKT-DFY2A Spectroscopic methods for non-destruc... en  4  summer OS DrEx   yes
FEKT-DVE2A Topical Issues of Electrical Machines... en  4  summer OS DrEx   yes
 


Year of study 1, both

Code Title L. Cr. Sem. Com. Compl. Gr. Op.

Compulsory
FEKT-DQJAA English for the state doctoral exam cs  4  both C DrEx   yes