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Impact of massive electromobility on the Czech Republic
Řeha, David ; Vančura, Jan (referee) ; Hejtmánek, Petr (advisor)
This bachelor thesis deals with the impact of the massive development of electromobility in the Czech Republic. Its importance is compounded by the fact that there are more and more speculations about the sustainability of our planet's development. This document describes the current state of electromobility, the state's position on this issue and the prediction of the number of these vehicles. It also analyzes the impact of a gradual increase of electric cars and the impact of using only electric vehicles, in terms of energy, where a large increase in electricity production and consumption is expected, ecological, where emissions are expected to decrease, and economic, where an increase of investment is expected and a decrease in state budget revenues.
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Design of Electric Ride-on Lawn Mower
Krulová, Karolína ; Jelenčík, Branislav (referee) ; Sládek, Josef (advisor)
The topic of this master thesis is the design of electric ride-on lawn mower. The main goal was to design an innovative garden machinery that will take the requirements of the private user into consideration of this type of equipment. The current market was thoroughly analysis and a questionnaire survey was compiled. The conclusions were to reduce the overall dimensions of the rider, simplify and lighten the design of the cutting system, design a seat that would be more breathable and comfortable in the summer months and replace the internal combustion engine with an electric one. The final product will be used by private owners of medium-sized and rugged gardens with an area of up to 1500 m2.
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Recuperation systems in automotive technology
Běhoun, Lukáš ; Repka, Martin (referee) ; Zháňal, Lubor (advisor)
The aim of this bachelor thesis is to examine the methods of energy recuperation in the automotive technology. The first section explores the historical development of the recuperation systems spanning from the end of the 19th century to the present day. The second section is following with the division of the recuperation systems in accordance with the method of their energy storage and their transmission. This is consecutively supported by three examples of use for each of the systems. The third section offers a comparison of the individual cumulative units. Furthermore, it offers a comparison of all the types of systems used in bus transportation. The fourth section analyses the fuel consumption by a bus without a recuperation system and by an identical bus with the Bosch Rexroth recuperation system. This is supported by calculations. Subsequently, the above systems are scrutinized from an economical point of view. The last part deals with the possible development of recuperation systems in the future.
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The electric car as part of a smart home
Peichl, Ondřej ; Ušiak, Michal (referee) ; Štětina, Josef (advisor)
This thesis provides an overview of technologies that can be a part of an electric car. These technologies include Vehicle to Grid, Vehicle to Building, Vehicle to Home, etc. The principle, properties, possibilities of development and integration in the Czech Republic and in the world will be described for these technologies. The second part of the thesis will deal with the connection of an electric car to a smart home and its cooperation with other components of the smart home, such as home photovoltaic power plant, control system or wallbox. At the end of the thesis is designed a specific smart house, which was calculated the consumption of electricity for the household, for the electric car and also how much of this consumption can cover the home photovoltaic power plant.
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Determination of active emissions of electric cars
Kaštánek, Petr ; Bayer, Robert (referee) ; Jaššo, Kamil (advisor)
This diploma thesis deals with the ecology of vehicles with combustion engines and electric motors, both in terms of operation and in terms of production of fuel or electricity. A closer focus is on active and passive emissions of cars with combustion and electric engines. Emission sources, their reduction options and measurement methods for their determination in the production of WLTP and NEDC cars are discussed. Non-exhaust emissions are discussed in detail. Furthermore, a measuring device based on the Arduino microcontroller is designed. This device is then used to measure solid particles from tires and brakes when operating vehicles with internal combustion engines and electric motors.
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Modeling of energy flows in the municipality with battery systems
Řehořek, Tomáš ; Krátký,, Milan (referee) ; Paar, Martin (advisor)
This thesis studies battery systems and possibilities of their utilization together with PV systems mainly for domestic purposes. Furthermore, the thesis deals with the impact of increased number of BEVs on load demand. The aim of the thesis is to simulate and investigate the power flows, within a selected grid, with high levels of PV generation paired with battery systems. The calculation of the power flows is performed in OpenDSS and the input data for the simulations are generated in Matlab. The theoretical part of the thesis describes the technology of the battery systems and how they operate. The thesis also partly touches on the use of battery systems for grid applications. In the practical part, an evaluation of simulations investigating the capability of battery systems to limit peaks of surplus generated energy is performed. As well as that the impact of increased load caused by BEV charging and the possibilities of reduction of this load via use of battery systems is also investigated.
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Proposal of measures in the low voltage network for the implementation of renewable sources and electromobility according to scenarios NAP SG
Vojtěch, Jan ; Kučera, Michal (referee) ; Ptáček, Michal (advisor)
The thesis analyzes legislative and strategic documents of the European Union and the Czech Republic which set targets in environment and energy area in 2030, alternatively in 2040. The individual chapter is dedicated to national action plans, where the most important is National Action Plan for Smart Grids setting specific requirements for future development of smart grids. The thesis contains analysis of distribution network in the municipality of Následovice and simplifying assumptions for the implementation of calculation. There are also introduced scenarios which have been used for the calculation of the distribution network with its results. Potential defects of the distribution network are commented with suggested solutions. The calculations were repeated to verify the solutions. Results are recapitulated in an individual chapter. Graphical outputs of the calculations can be found in the attachement.
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Distribution system support by power management of battery systems in charging mode and charging systems for electric vehicles
Rodionov, Vladislav ; Mastný, Petr (referee) ; Drápela, Jiří (advisor)
The thesis focuses on the power management support of battery systems in charging mode and charging systems for electric vehicles in the LV network. The thesis includes an overview of the distribution network of the Czech Republic, means of voltage regulation and the existing legislative framework for the connection of charging systems. The thesis describes the methods of active and reactive power control depending on the voltage and frequency. The practical part focuses on the simulation of grid support at different penetration levels of BESS and EVC in MATLAB Simulink and the verification of the support function on a laboratory system. In the last part, the methods of implementing the control system for BESS and EVC operating in the LV grid are specified.
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