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Original title in Czech: Silnoproudá elektrotechnika a elektroenergetikaFEKTAbbreviation: PP-SEEAcad. year: 2014/2015
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 aim is to develop and verify new voltage quality parameters applicable for voltage quality on-line monitoring, optimization of mitigation techniques, etc.
Supervisor: Drápela Jiří, prof. Ing., Ph.D.
The theme focuses on energy systems that are an alternative to traditional , conventional technologies , such as commonly seen in the current context of energy. One of the aims is to lay the technical basis of these alternatives , often to supplement the lack of comprehensible technical and physical form of information and incorporate these alternatives in the context of commonly understood and available technologies. Currently, these alternatives can play a key role in the search for future solution not only for energy, but the general life style with the aim of sustainability. It is evident that traditional approaches to energy generation have their limits and that it is not only reveals we are directly confronted by their presence, such as dwindling reserves of mineral wealth. The focus of the work can be focused on accessible and realistic themes such as renewable . However, the scientific contribution should shift to areas that are still refuses to accept generally by classic science, such as the so-called free energy .
Supervisor: Baxant Petr, doc. Ing., Ph.D.
The theme refers to the continuous transmission of rotary motion mechanisms that serve to facilitate a particularly economical drive vehicles, such as passenger cars, trucks, trolleys, trams, locomotives, etc. It is particularly timely for hybrids, electric cars, etc. It is assumed theoretical solution of the energy flow the branches, prototype production and confirmation of the chosen means of transport. Promised cooperation with companies ZMS VRS Institute of motor vehicles in Prague, EM Brno.
Supervisor: Veselka František, doc. Ing., CSc.
This topic is focused on research of methods of condition monitoring and fault diagnosis of electrical machines using different kinds of diagnostic signal, signal processing and decision making.
Supervisor: Vítek Ondřej, doc. Ing., Ph.D.
The theme is focused on problem of electrical system that is increasingly promoted as the managing electricity systems not only in commercial and industrial applications, but also family and residential development. It offers the possibility of using so-called intelligence system installation as a means not only to manage user processes and technologies in the internal functions of the object, but also for object management in terms of superior system which can be a distribution network.
Supervisor: Toman Petr, prof. Ing., Ph.D.
Diagnosis of insulating state of MV and HV network equipment is a modern method allowing non-invasive way to locate the insulation faults provides comprehensive information about the insulation condition or determines the level of interference in the operation of the test object. Partial discharges cause gradual degradation of electrical insulation through the erosive, chemical and thermal effects - thus reducing its service life, reliability and cause electromagnetic interference. The work is focused on the diagnosis of external, internal and surface partial discharges of devices supplied with an alternating voltage of 50Hz frequency and a maximum effective value of 300 kV, the analysis of the measured results and the creation of ancillary laboratory products as well.
Supervisor: Orságová Jaroslava, doc. Ing., Ph.D.
The topic is focused on power DC/DC converters with pulse transformers (supply sources). The application of new power switching semiconductors and new magnetic materials enable to construct converters with extreme parameters and high efficiency. The searching for optimum power circuitry and their control structures will be the goal of the research. Design optimization of wound components will be included in the research.
Supervisor: Vorel Pavel, doc. Ing., Ph.D.
The topic is focused on the problems of energy storage in power systems with the goal of stabilizing the power grid.
Supervisor: Mastný Petr, doc. Ing., Ph.D.
This topic is focused on research of high efficiency electric motors, loss analysis and methods of loss reduction. Analysis of winding, space harmonics, elimination of parasitic space harmonics, special rotor designs, employment of recent materials of permanent magnets. Motor design using program Ansoft-RMxprt, FEM based simulation of designed motors using Ansoft-Maxwell 2D/3D, optimization. Realization and testing of the laboratory samples of motors is assumed.
Visible light variation may leads to disturbance of human’s visual perception. The origin of such negative effect is in the eye anatomy and physiology. The major influence on the flickering light perception can be found in eye viewing field, photoreceptors (cones of three types and rods) and their distribution at retina as a part of eye anatomy and in eye adaptation mechanisms like pupil, photo-chemical and neural adaptation (response) to luminous variations (including the photoreceptors spectral luminous efficiency) as a part of eye physiology. The human eye can be seen as specialized luminance multi-detector where the stimulation contrast is as important as radiant density. There are differentiated three types of flicker: temporal, spatial and chromatic. All of these flickers are joyless and may involve many psychological interactions. In artificially illuminated areas, lamps light variations due to variations in supply voltage may also lead to flicker perception. Such lamp possibly will produce light with time-varying radiant flux and its spectral distribution. The lamps flickering is produced by a voltage Phase Modulation (PM), mainly by Phase Jumps (PJ) and by Interharmonic Voltages (IH) superimposed on a voltage waveform. Thesis is focused on the voltage fluctuation to lamps time-varying radiant flux and its spectral distribution fluctuation transfer analysis and on the utilization of the analysis results for development and realization of an objective flickermeter having response to both the temporal luminance and chromatic flicker. The thesis aim is the realization of the new flickermeter types implemented in LabVIEW, with the experimental verification. The thesis covers theoretical-analytical, developmental and also practical-experimental part of study. More information: drapela@feec.vutbr.cz.
The work is aimed to theoretical principles and phenomena in non-standard installations of high voltage equipment. Theoretical descriptions of both physical and mathematical models will be applied to testing equipment and accessories for impulse tests of switchgear and electrical devices. Attention will be devoted to specific cases of dynamic tests of electrical apparatus and machines. Results of simulations will be evaluated in both diferential and integral quantities for verification with experimental measurements.
Supervisor: Fiala Pavel, prof. Ing., Ph.D.
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: Aubrecht Vladimír, prof. RNDr., CSc.
Control systems are currently based on well defined algorithms that handle the specified set of inputs and generate desired output values. Function of the algorithm can be affected by change of parameters; their set is also predefined in design time. The goal of this work is to design a control system that will autonomously adapt to changing requirements or the configuration of inputs and outputs. System functions will be gradually improved on the basis of data processed by the system itself. Primary application will be control of function of buildings or larger units with respect to optimization of the overall energy balance.
The goal of PhD thesis will be analysis of different types of losses in electrical machines at non-standard condition - e.g. nonsinusiodal voltage, influence of temperature and mechanical stress.
Supervisor: Ondrůšek Čestmír, doc. Ing., CSc.
Low-Frequency Electro-Magnetic Compatibility in Low- and Middle-Voltage Distribution Systems Highly Penetrated by Distributed Nonlinear and Dynamic Loads.
The theme is focused on the measurement of very small distances and deformation of rotating electrical parts. machines that have a significant effect on the operating characteristics of machines and equipment. The measurement is made modern measuring, recording and evaluation techniques. The aim is to assess and optimize the partial impacts of physical quantities on the characteristics and parameters of electromechanical systems. The work consists of theoretical, experimental and practical part. The issue is UVEE continuously addressed in the grant project, forthcoming international cooperation. Results are regularly published.
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.
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.
The substituting circuit of the induction machine can be created in a form of the T-network, Gamma-network or Inverse-gamma-network. The new control methods are based on the formal mathematical recalculation of these substituting circuits into another suitable form. In the research frame, those new methods will be simulated in Matlab-Simulink, and verified experimentally. Hardware and software will be realized. The theme is mainly focused on the microprocessor programming.
Supervisor: Patočka Miroslav, doc. Dr. Ing.
The topic is focused on operational diagnostics and optimization of multivalent heating systems (heat pumps, solar systems, cogeneration units).
Design and optimization of new methods of cooling of electric machines using modern computational methods and applications of several types of optimization methods with emphasis on genetic algorithms.
Supervisor: Janda Marcel, Ing., Ph.D.
The aim of the work is the algorithms formulation for electric machines design with maximum efficiency and optimal utilization of material properties.
The main aim of the thesis is focused on the problems of blue light generated by light sources so-called "Blue Light Hazard". This blue light appears in the spectrum of LEDs, which are massively deployed in lighting systems currently. It is possible that there is a real risk of permanent damage of the eyesight. The task of the PhD student is to gather available information about these problems, to assess potential risks to human health and to propose actions to reduce these risks.
The topic is focused to the modeling of energy systems with renewable energy sources and prediction of energy flows in these systems.
Based on requirements for contact materials, suitable contact materials will be investigated in various switchgear design. Consequently, the selected materials will be analyzed in detail in order to find cruciable quantities involved in numeric simulations of switchgear behavior with the contact connection taken into account (electrical and thermal resistances, ..).
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.
Small and medium sized modular reactors have recently been the projects of special interests of some nuclear specialists and technical public. Such projects are primary designed for distant areas with difficult access and limited grid connections possibilities. However, small modular reactors might be utilized in developed countries too; they can serve as locally distributed low-cost base-load sources. Safety systems of small modular reactors are based on passive systems and physical phenomena. Goal of dissertation project is to propose, to design, and to develop the dynamic model of small modular reactor system and to analyze it - not only during severe accident conditions but especially during abnormal operation transients. These have not been sufficiently investigated and experienced yet.
Supervisor: Katovský Karel, prof. Ing., Ph.D.
Goal of proposed dissertation project is to develop an complex simulation model for safety, reliability, and efficiency operation of new design of nuclear fuel. Model will be validated using experimental data from research reactor measurements. Investigation will be perforem within the cooperation with UJV Rez and CV Rez.
The topic deals with reliability and safety of electric drives regarding hardware and software design. The topic is focused on aplications with high demands on drives safety in rail, air and automotive transport systems. The methods for asuring safety and reliability will be solved including certification procedures.
Supervisor: Klíma Bohumil, doc. Ing., Ph.D.
The theme includes issues of sliding contact in high-end applications of electromechanical systems operating in dynamic operating conditions (Starting, regulation, etc.) with high ratings of current, voltage, speed, power, speed, and defined the parameters of the surrounding environment. Since the development of electromechanical systems in particular is currently associated with a requirement for high reliability and durability as defined, should be to extend the life of work sliding contact, reducing degradation of the stationary and moving parts of the sliding contact, eliminating the influence of the surroundings on the current flow between the stationary and moving part of the sliding contact. Partial information will be obtained during the analysis and field current.
The theme includes a study of the issue of sliding contact, not only in traditional applications, but also in special applications of electromechanical systems operating in dynamic operating conditions with high rated current, voltage, speed, velocity and defined parameters of the environment. In the case of sliding contact is expected to use newly developed materials such as HS22196, VS3110. This concept is the integration of the sliding contact with the application of Teflon and the sliding contact of carbon - carbon bonds. Promised cooperation with companies ElringKlinger Kunstofftechnik GmbH, NAREX, EM Brno.
The main aim of the work is detailed risk analysis of electrical networks operated with faults and proposal of methodology for earthing system optimization.
The main aim of the work is the proposal of algorithms for load prediction based on history and on evaluation of needs and proposal of implementation into control of distribution networks.
Integration of large scale renewable energy sources and small size generating facilities into the electricity structure will require new electricity grid structures and new strategies for their operation and control to ensure efficiency, security, sustainability, reliability and high quality power supplies. It can be assumed that the distribution networks will be addressed: • the change of power flow direction - protection of distribution networks will develop to become more similar to transmission systems, • new protection algorithms able to cope with the lower short circuit currents in the system because of the greater contribution of converter based generators, • new automation applications of DG connected to the distribution network - control capabilities, reconfiguration, synchronization and reclosing, • development of powerful communication networks in the distribution system with data integration based on the standard IEC 61850 communications, • reliable islanding detection and intentional islanding capability.
The theme is focused on the application of nanotechnology in electrical machines, particularly with a sliding contact. The work builds on the extensive knowledge and skills in this area, which were obtained on UVEE FEEC in the application of modern technology in the design of electrical machines. The aim is to identify the dependencies and relationships between components in different design and application version with a link such as EMC .. The problem is solved UVEE continuously and is achieved interesting results published on an international level. The Institute has a special measuring workplaces for practical verification of theoretical assumptions and cooperates with leading companies.
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.
Due to many sources of distributed generation and also a growing number of supply points, especially in industrial areas, the MV distribution networks face to many challenges. The issues which must be complexly solved in near future are fault location, voltage regulation, the calculation of technical and non-technical losses, load flow optimization and load prediction of the distribution system. To analysis of mentioned problems it is necessary to use monitors for voltages and currents monitoring that are installed or will be soon installed in MV or LV system. The aim of the thesis is to find an effective utilization of data provided by the monitors to optimize MV network operation to eliminate the problems. Optimization will be focused on already installed monitors, as well as on their planned installations with respect to their optimal location.
The theme is focused on the measurement and vibration analysis of electric machines. Specifically, the diagnostic spectrum measured vibration acceleration amplitudes and asynchronous motors. The main objective is to create a method based on neural networks, which has to recognize various types of failures of electrical machinery and enable their prediction.
Voltage regulation in active distribution systems