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. RNDr. Vladimír Aubrecht, CSc.

2. round (applications submitted from 04.07.2016 to 20.07.2016)

1. DIAGNOSIS OF ELECTROMECHANICAL SYSTEMS AND IMPROVING THEIR OPERATING PARAMETERS

   The development of electromechanical systems in particular is currently associated with the requirement of high reliability and durability as defined in connection with the transition to higher levels of performance and speed. Therefore, the topic is focused on assessing the impact of failures on the part of the electromechanical system's operating characteristics. The aim is to complete the study and diagnosis of electromagnetic and mechanical properties on the vibration generation and application of supply current. The work consists of theoretical, experimental and practical part. The issue is to continuously UVEE resolved within several projects.

   Tutor: Veselka František, doc. Ing., CSc.

2. Optimalization of electric machines using artficial intelligence

   The aim of the work is the optimalization of complex design of electrical machines using artficial intelligence The desing is including Electromagnetic, mechanical, thermal and economic aspects will be taken into cosideration in optimalization.

   Tutor: Ondrůšek Čestmír, doc. Ing., CSc.

3. Power sources induced environmental pollution investigation in the Eastern Europe by nuclear analytical techniques

   Topic is based on investigation of environmental impact induced by classical power sources (e.g. coal power plants). Pollution will be studied by moss samples analyses using radio-analytical and related nuclear methods especially activation analysis and gamma spectrometry. Long-term fellowship in JINR Dubna, Russia is planned as a part of the PhD. studies under supervision of Dr. Marina Vladimirovna Frontasyeva from Joint Institute for Nuclear Research Dubna, head of activation analysis department of Laboratory of Neutron Physics.

   Tutor: Katovský Karel, doc. Ing., Ph.D.

4. Raditive heat transfer in electric arc plasmas

   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.

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

5. STUDY OF DYNAMIC PROPERTIES SLIDING CONTACT

   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.

   Tutor: Veselka František, doc. Ing., CSc.

6. System for monitoring of power quality and energy power flows in buildings with renewable energy sources

   Evaluate current options (worldwide) management and monitoring of building energy systems with renewable energy sources. Design and create a unified system of regulation and control for the system, which will include heat pumps, solar thermal collectors and hybrid energy system with accumulation (photovoltaics, wind turbines) in order to achieve the maximum possible interactions between different sources and devices with respect to environmental influences. Underlying assumption of the proposed system is based on the concept of using PLC.

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

7. The voltage regulation in distribution networks with a high proportion of stochastic sources

   An increasing proportion of stochastic resources in networks affect the voltage stability during the day. Variable power delivery to the grid from these sources causes fluctuations in voltage variations during the daily diagram. Current devices used to the voltage regulation are unable to provide the required voltage level at all points of the network. The aim is to describe new possibilities and means for voltage regulation in distribution system and design concept of this regulation with regard to the current development of the resource base.

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

1. round (applications submitted from 01.04.2016 to 15.05.2016)

1. Accelerator Driven Nuclear Reactors’ Neutron Fields Spectrometry

   The thesis objective is to prepare general overview of neutron field measurements methods, focused on energy spectra determination. Student will give an emphasis on fast and high-energy neutron field generated in reactor system driven by particle accelerator. Student will perform neutron-physical calculation, will determine cross-sections, predictions of reaction rates and will prepare unfolding methodology (including of proper unfolding code solution). Student will follow with experimental measurement, data processing and evaluation, and final spectra determination. Thesis is research focused work, but it will also include a methodology work – verified and validated method of ADS neutron spectra determination there should be as the thesis’ output.

   Tutor: Katovský Karel, doc. Ing., Ph.D.

2. Analysis of dynamic and static parameters of power switching transistors

   The experimental part of the work will deal with a detailed analysis of turn-on and turn-off switching processes in IGBT and MOS-FET power transistors, focusing especially on very fast transistors based on the SiC and GaN materials. Considering the extreme switching speed of these semiconductors, it will be necessary for the purpose of oscillographic measurements to develop current sensors with a very large bandwidth of at least 300 MHz. The theoretical part of the work will be focused on determination of a mathematical model of the turn-on and turn-off processes in the transistor. The model will be realized using the experimentally obtained data. The purpose of the model will be an exact calculation of switching losses in a transistor in arbitrary operating conditions.

   Tutor: Procházka Petr, Ing., Ph.D.

3. Comparison and optimization of DC/DC power conversion topologies using GaN Fet technology for highly efficient converters with a high volume density of power.

   Theoratical part - survey and comparison of existing GaN switching devices - analysis of suitable soft switched and hard-switched topologies optimizing efficiency and power density suitable for medium power (~3kW), high voltage (~400Vdc) to low voltage (~48Vdc) power conversion - analysis of problems and parasitic effects corresponding to used topology, high switching frequency, fast switchif devices etc. - proper circuitry design of drivers for used GaN devices - analytical design and simulation of a 3kW ultra high efficient DC/DC converter for 400Vdc to 48Vdc using GaN and implementing the chosen topology (power circuits, drivers, control circuits) Practical part - practical verification of the proposed topology - comparison of the analytical, simulation and measurement results

   Tutor: Vorel Pavel, doc. Ing., Ph.D.

4. DEVELOPING A DIAGNOSTIC MEASUREMENT METHODS

   The theme is focused on especially long-term tests for 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 the application of modern technology, not only in the design of electrical machines, but also sliding contact. The aim is to identify the dependencies and relationships between components, parameters in various design and technological design of machines linked eg EMC .. The problem is solved UVEE continuously and is achieved interesting results published on an international level. The Institute has a special measuring workplace for practical verification of theoretical assumptions and cooperates with leading companies not only in this country but also abroad.

   Tutor: Veselka František, doc. Ing., CSc.

5. Research and development of high torque electric machines

   The aim of the research is the complex design of high torque low speed synchronous motor 650kW, (0 – 20) r.p.m., 270kNm for direct drive and or synchronous generator 1MW, 900kNm for electric power generation with speed about 10 r.p.m. The machines are supposed be realised and measured and theoretical results will be compared.

   Tutor: Ondrůšek Čestmír, doc. Ing., CSc.