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.

doc. Dr. Ing. Miroslav Patočka

1. Small Induction Motors with Lower Energy Intensity

   Main goal of the work is an research and development of special encapsulated motors both for water pumps powered by frequency converter. Special consideration will be especially dedicated to research within the meaning of magnetic circuit optimisation in magnetic losses point of view. The result of project solution should be a modern induction machine at high technical performance, which meets the customers requirements at maximum rate.

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

2. Analysis and Modelling of Low Voltage Electric Machines Parameters

   Aims of Thesis: - to analyse the losses and efficiency theoretically and experimentally for the individual machine groups, - to solve certain areas of losses which have been little explored until now - e.g. additional losses, establishing of mechanical losses and the like. -the final goal of the work is the research and development of a new generation of small electrical machines with optimized (increased) efficiency and improved characteristics.

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

3. Automotive Electric Motors Innovation

   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

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

4. Dispersed power production and its influence on reliability of supply

   Thesis is focused on the possibilities of connecting small power sources to the supply network and evaluation of its influence on the reliability of eletrical power supply regarding its flukiness. The thesis results in the design of system precautions and conditions for the operation of small power sources in supply network.

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

5. Innovation of DC Motors Series with Permanent Magnet

   The main goal of work is an research development and innovation of DC motors series with permanent magnet, which should attain better technical and economical parameters. Design and calculations of DC motors will be verified by measuring and testing of samples and prototypes.

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

6. Protection against neutral conductor overloading and disconnection

   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.

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

7. The models of electrical machines at adaptive CAD systems

   Aims of the thesis: - Search documentation on exchange data formats - Specification of possibility CAD systems cooperation with external databases. - Usage analasys of parametrs at Inventor for items and component database creation. - The creating of Library centrum at Autodesk Inventor. - Specification of possibility CAD systems cooperation with Kinematics analysis

   Tutor: Kuchyňková Hana, doc. Dr. Ing.

8. Transmission of faulty values between voltage levels in power system

   The topic of fault simulation in power systems is still very actual. The main aim of the thesis is development of correct models of power transformers and simulation of transmission of the faults between voltage levels for different types of tranformer winding connection.

   Tutor: Toman Petr, prof. Ing., Ph.D.