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Original title in Czech: Silnoproudá elektrotechnika a elektroenergetikaFEKTAbbreviation: PP-SEEAcad. year: 2012/2013
Programme: Electrical Engineering and Communication
Length of Study: 4 years
Profile
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.
Guarantor
doc. Dr. Ing. Miroslav Patočka
Issued topics of Doctoral Study Program
The goal is to research and development representatives series motors single and three phase. Particular attention will be paid to research in the sense of optimizing the magnetic circuit in terms of losses. The result of the project is expected modern small asynchronous machine at a high technical level that meets the maximum extent possible the requirements of manufacturers such as machine tools. Analysis and minimization of losses in the magnetic circuit and electrical machinery.
Supervisor: Hájek Vítězslav, prof. Ing., CSc.
The work will be focused on elctromagnetic design optimization using artificial inteligence to get the best solution according to the desired requirements.
Supervisor: Ondrůšek Čestmír, doc. Ing., CSc.
Aim of this work is research and development of a new type of DC machine with permanent magnet excitation. The machine would be used as multifunctional one with expansion of a new type of gear box. It is supposed a solution of magnetic circuit, magnetic field, induction in air gap of the machine, optimization by up-to-date numeric method (FEM), verification by analytical method, solution and total weight reduction of the machine, reduction of losses and increase of efficiency. Proposals and computations will be verified by measuring and tests made on samples and prototypes
The main aim of the thesis is the analysis of available information about blue light hazard and to evaluate possible risks to human health.
Supervisor: Baxant Petr, doc. Ing., Ph.D.
Fault protection of power systems is actual topic. In this time the utillities implement the digital communication according the standard IEC61850. A part of this process could be transfer of measured values from instrument transformers or sensors in digital form. The main aim of this tesis is development of protection function using input data in digital form and optimalization of this function in workload point of view of each element of the system.
Supervisor: Toman Petr, prof. Ing., Ph.D.
The main aim of the thesis is the analysis of available method of earth fault location, working up of the method of additional earthig of affected phase and evaluation of possible negative influences on network safety.
The principles currently used in the protective function of the digital protections are generally based on the evaluation of analog signals in current and voltage of the protected object. This input analog signals have been provided by instrument transformers from the origin of electrical protections. With the advent of sensors that are increasingly replaced the above conventional instrument transformers, is to be expected qualitatively and quantitatively different type of input signal to digital protection. With respect to this fact, may also be reviewed a number of protective functions, which the concept was based just on the cooperation with conventional current instrument transformers. This work should consider the influence of the used transducers (Rogowski coil or current transformer instrument) to a particular protective function and not only with regard to the parameterization, but also on the principles used to evaluate the fault states of protected system.
Supervisor: Orságová Jaroslava, doc. Ing., Ph.D.
This topic is focused to the examination of individual parts failures related to it's operation features.
Supervisor: Veselka František, doc. Ing., CSc.
Ever-increasing share of renewable electricity to the connected system has some effect on the quality of electricity supplied to consumers (the size of voltage, frequency, harmonics, etc.). The work is to evaluate the current state methods for calculating the steady state of the network (suitable iterative method) to connect new sources and outline additional procedures and options in connection with the EU legislation, the rules for parallel operation of resources and energy flows in interconnected systems.
Supervisor: Matoušek Antonín, doc. Ing., CSc.
Influence of individual parts of a low voltage circuit breaker on the proces of switching arc quenching will be studied. A combination of experimental methods together with numerical methods will be used for an identification of dominant factors. The main aim is to createa comprehensive description of the quenching process which will serve as a tool for development and/or inovations of new types of switchgear.
Supervisor: Bušov Bohuslav, doc. Ing., CSc.
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.
The topic is aimed at the analysis of present method for testing of insulation of devices for 110 kV and 22 kV distribution networks. The solver will deal with insulation testing methodology under electric stress of high ac, dc and impulse voltages in test laboratories, dry and wet tests, pollution test, corona and voltage distribution tests on insulators. With respect of this tests the measurement of insulation resistance, dielectric response analysis, recovery voltage, capacitance and tan, partial discharges, must be analyzed as well. This work assumes introduction to relevant national and international standards for above mentioned tests, which the technical project of HV laboratory should be based on.
The thermal plasma is being widely technologically employed. One of the possible plasma sources is the plasma torch. It produces the plasma by means of axially blasted electrical arc. The aim of this work is to suggest mathematical-physical model of arc and to compare with simplified model. The values measured on plasma torch will be used for verification of the created model.
Supervisor: Lázničková Ilona, doc. Ing., Ph.D.
To check the dynamic stability of power system is necessary to simulate a number of operational events and failures that could lead to extensive outages. Simulations are based on the solution of transient phenomena solved in time domain using a mathematical model of power system. It is time consuming calculations, whose results can not be used for on-line power system control. The object of this work is to evaluate methods and procedures for solving of transients in the unsymetrical electricity network primarily with respect to their time-consuming. The next step is then to propose a suitable method for monitoring of power system dynamic stability with respect to typical operational and fault events (short circuit faults, power swings due to line or generator failure, voltage drop, etc.), that could operate in on-line mode, while preserving proper classification of unstable or hazardous states of the system.
Thesis is focused to nanotechnologies that are used in electromechanical systems, especially with the slide contact. Thesis will continue in extensive knowledge gained in this field of study.
The main aim of the thesis is design of the new concept of lightning and switching surge protection of generators, motors, transformers and decompensation coils in distribution networks.
Electronuclear system are coupled systems based on nuclear reactor joined with ion source, usually accelerator. Systems are presently used as neutron sources, they can be used as a transutation systems in the future. Systems might be capable to transmute long-lived isotopes from nuclear spent fuel. Thesis will deal with the general system simulation with emphasis on special topic, which might be experimental one. Student will work in international team and will participate in experimental measurements abroad.
Supervisor: Katovský Karel, prof. Ing., Ph.D.
Using high speed photography for an analysis and computational reconstruction of switching arc behavior in a switchgear under real conditions. Analysis of spectral filterring inflence on the switching arc digital image quality. Development of a software for high speed framing acquisition and subsequent digital image processing.
Supervisor: Aubrecht Vladimír, prof. RNDr., CSc.
This topic is focused to the measurement of small distances and deformations of the rotating parts of electrical machines. This phenomenon effects machine operating conditions.
Topic is focused on the analysis of current and voltage system of a TN-type distribution network supplying star-connected asymmetrical nonlinear load. This case is typical for large majority of LV distribution networks with single-phase non-linear appliances. Under certain but usual conditions, described load-type connected to the three-phase network can cause overloading of the neutral conductor, leading in a worst case to its disconnection. High impedance of the neutral conductor together with the load unbalance i.a. leads to change in phase to neutral voltages magnitude up to the phase to phase voltage. Consequently, increased and at the same time decreased phase to neutral voltages can cause temporary or permanent change in function of the connected appliances. However, up to now there is no uniquely determined and effective tool to protect customer’s networks against the neutral conductor overloading and its disconnection. The aim of the thesis is on the base of the analysis to propose function principle of an appropriate protection and to realize its prototype. More information: drapela@feec.vutbr.cz.
Solution of energy balance in an arc plasma with respect to the radiative heat transfer. Influence of various spectral intervals and various molecular species on the radiative heat transfer in the arc plasma. Development of computer code for calculation of absorption coefficients of given thermal plasmas.
The aim is to research a new insulation system for small electric machines, especially the AC and DC partially. Research will be done in several ways (areas) in the material, technological and in measuring and testing. The result should be a new version of small electrical machines with high resistance short circuit and possibly a higher heat resistance.
This topic is realted to the sliding contact issue in special electromechanical systems which is oprating in dynamic operating conditions with high nominal current, voltage, rotation speed, speed and defined environment parametres.
This theme is focused on the issue of prediction power from renewable energy sources, especially from photovoltaic power plants, which due to recent trends of recent years have become a regular part of the mix in the electricity system. Analysis and prediction of reliability of electricity supply is one of the means for determining and resolving power system stability, etc. The basic input parameter that determines the performance of photovoltaic power plants, the intensity of incident solar radiation, which varies depending on quantity as variable weather conditions. The task would be to work to formulate and develop a methodology for prediction of delivery, a link a use of existing models for forecasts.
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 hydrogen (VRB systems) utilization and pumped storage hydro plants for its accumulation. The result of the work will be the draft measures in the energy 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.
The purpose of this project is to design optimal solution for Nuclear power plant restoration after serious break downs. The main stress will be on radioactivity leakage break downs, which caused electrical system black-out. Project deals with optimalization of dispatcher restoration actions under radioactive environment conditions. Several models will be done for situations with different intensity of radiation.
The power system reliability is high priority of present society. The main aim of the thesis is the analysis of present methods of condition evaluation of distribution network equipments and using the got information for fault detection in distribution networks. The example could be worse insulation state of transformers, grommets, single phase fault in line with covered conductors etc.