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Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 99
Raková, Lenka
Obnovitelné zdroje v elektroenergetice

The decentralized electricity generation from photovoltaic power plants is accompanied by unfavourable consequences on the operation and regulation of the Czech Republic electricity system. The aim of the doctoral thesis is to evaluate the possibilities of the frequency and voltage control i...

Rendl, Karel
Diagnostika propojovacích struktur součástek a substrátů

This work deals with the optimization of the soldering process and its impact on the quality of the solder joint in terms of flux. First chapter describes introduction to the issue of lead-free soldering and difficulties concerning this technology. This chapter is mostly focused&#x...

Harvánek, Lukáš
Nanokompozity pro elektrotechnické aplikace

The biggest advantages of using solid polymer dielectric materials for high voltage devices are specifically their electrical and physical properties. For this reason, the main idea and goal of this study is to assess to what extent nanotechnology can improve the electrical properties&#...

Valda, Lukáš
Metody a algoritmy pro vyrovnávání napětí sériově řazených lithiových článků v akumulátorových sestavách

This thesis deals with the issue of balancing series-connected lithium cells in battery-packs, primarily focusing on Li-ion. The first part contains the description of the types of imbalances and their causes, manifestations and consequences, and discusses options for their suppression or el...

Svoboda, Michal
Implementace Condition Based managemantu elektroizolačních systémů

Growing demand on efficient operation of the electrical grids is driving the operators of electrical machinery and equipment to efficiently invest into maintenance and renewal of operated assets. For accurate and cost-effective decisions...

Hirman, Martin
Diagnostika propojovacích struktur součástek a substrátů

This thesis deals with interconnection of components with flexible substrates considering the different properties compared to the standard rigid substrates. This topic is explained theoretically in the first part of the thesis. Especially, the soldering technology, gluing technology, types of fl...

Křibský, Petr
Využití moderních průmyslových sběrnic v náročných prostředích

This thesis deals with methods for an estimation of state of charge of lithium ion batteries. This work contains a description of the basic principles of estimation the state of charge. The paper also includes a proposal of an unconventional method for estimation of state ...

Wirth, Václav
Diagnostika propojovacích struktur součástek a substrátů

This thesis describes the issue of soldering in electronics, focusing on the intermetallic compounds formation in a joint structure. The opening part deals with soft sodering in electronic. Materials, technologies of soldering and the current state of the intermetallic compounds issue are&#x...

Nikolayev, Denys
Numerické modelování speciálních antén pro použití v biomedicíně

Progress in implantable and ingestible wireless biotelemetry requires versatile and efficient antennas to communicate reliably from a body. We propose an miniature antennas immune to impedance detuning caused by varying electromagnetic properties of the surrounding biological environment. It is design...

Veselý, Ondřej
Nové materiály pro kabelovou techniku

At first in this thesis the current knowledge about the used cable sheath materials is summarised. Next the increasing requirements for technical parameters of cables from the perspective of the European legislation and the possibility of using nanodielectrics are analysed. Consecutively the...

Štulík, Jiří
Senzory

This thesis deals with a chemoresistive, toxique gas sensors based on carbon nanotubes modified by other organic materials. The modification is carried out in order to improve certain sensor properties. The thesis is divided into two major parts. In the first part, including chapte...

Janouš, Štěpán
Nové koncepce pohonných jednotek pro moderní dopravní systémy

This thesis deals with the development of model predictive control of ac electric drives with long prediction horizons and yet with computational cost of the algorithm comparable to conventional cascade control approaches. The basic idea is to approximate the cost to go function of...

Tomášková, Tetjana
Zlepšování parametrů vysokonapěťových zařízení

Dissertation thesis is targeting improvement the thermal balance of electrical rotating machines. It summarizes the current knowledge in the field of cooling of electrical machines and ways of transfer of heat in them. There is also shown the necessary theory in the fields of ...

Lovecký, Martin
Zvyšování účinnosti jaderného paliva použitím vyhořívajících absorbátorů

The thesis describes the development, validation and use of UWB1 code intended for fast calculation of nuclear fuel depletion in burnable absorber research. The degree of effectiveness of burnable absorbers in the form of natural abundance elements, nuclides and their combinations are c...

Jára, Martin
Nové topologie polovodičových měničů s vysokou účinností

This thesis is focused on the development of high-efficiency power electronics converters especially in the field of light traction applications. Primarily, it deals with the auxiliary drives of trolleybuses and with the wireless charging system for electric vehicles. The first ...

Ulrych, Jiří
Perspektivní materiály pro dielektrické obvody elektrických zařízení

The dissertation presented is focused on the analysis of the current state of fluid systems modifications with nanoparticles, expanding of the aspects of the interactions between the liquid dielectrics and the electric field, identification of the necessary diagnostic systems, determination of&#x...

Fiala, Pavel
Elektronické komunikace - zpracování signálu v družicových systémech

This doctoral thesis is devoted to the proposal of highly efficient synchronization structures, which can be used within the concept of software defined radio partially implemented on an FPGA. I focus on algorithms for symbol synchronization and carrier phase synchronization. At present,...

Čermák, Karel
Embedded systémy a netradiční způsoby interakce s uživatelem

This thesis deals with the design of embedded platform for didactical aids development. The design was focused for special pedagogues needs in field of specific learning disabilities. On its base, the concrete didactical aids could be derived and they aim to reduce the specific...

Vaněk, Josef
Stanovení hygienických podmínek pro efektivní užití sálavého vytápění

Nowadays, progress and improvement of various techniques in the field of heating of family houses and flats has been continued. Heating using the electricity seems to be the most comfortable. Moreover, it has also a number of indisputable advantages. Its main benefit is that t...

Souček, Jakub
Degradační procesy v elektroizolačních strukturách

This dissertation thesis deals with the description of electroinsulating systems in view of lifetime using models of aging. The theoretical part deals with fundamental aspects of aging models, which are divided into physical, statistical and physical-statistical models. In following text is ...

Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 99