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A study of electric vehicle recharging
Solař, Adam ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The subject of this thesis on the topic of the study of the electric vehicle charging. The aim was to draw up a research study on the history of the electric vehicles, the options of their charging and to assess the availability of the charging points in our country and abroad. Additionally, this study provides overview of the electric vehicles available on the market and the types of charging devices and charging options. In conclusion, a large number of the ways and charging types were discovered. Furthermore, we calculated the approximate charging time with regard to the type of charging device and convenience of the charging points. This work also mentions some disadvantages of the electric vehicles, such us the long charging time, charges for the fast charging station use or currently high retail prices of these cars. Despite the prevailing drawbacks, the electric cars are becoming more visible on the roads.
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Miniature charger for a battery pack Li-ion 14,4V/2Ah
Bartoš, Miroslav ; Huták, Petr (referee) ; Vorel, Pavel (advisor)
This bachelor‘s thesis describes the design chargers for lithium-ion batteries. The proposal includes the selection of suitable converter topologies, design power, control and excitation components and a design of high frequency transformer. In the next part the thesis deals with the BMS, which stands for battery management system. The last part deals with the production of the proposed switching source and BMS. The project documentation for the production of a charger is also provided.
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Photographic battery flash unit
Dašovský, Jakub ; Kubíček, Michal (referee) ; Kolouch, Jaromír (advisor)
The main subject of this bachelor thesis is the design of a flesh unit with a maximum output performance of 400Ws. Regulation is performed by the length of flash. The source of energy used is generated by Li-Ion cells with a total voltage of 21 V and capacity of 5200 mAh. Part of this design include circuits that provide power control to the flash tube, the resizing of the DC voltage (changing), the charging and monitoring of the minimum battery voltage.
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Solar Charger
Sygeryč, Daniel ; Tonar, Karel (referee) ; Tošer, Pavel (advisor)
This bachelor’s thesis deals with the charging of the batteries by a solar energy. Great emphasis is placed on maximum utilization of the energy obtained. The development, the principle and characteristics of the photovoltaic cell were described. Next chapter is focused on lead-acid batteries. There are presented the characteristics and principles of their charging. This thesis also deals with the implementation of solar charger using solar controller, switching voltage inverter, Step-Down converter, protective and signaling circuits as well. There is also described the design and calculation of the solar charger circuit board.
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A study of electric vehicle recharging
Solař, Adam ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The subject of this thesis on the topic of the study of the electric vehicle charging. The aim was to draw up a research study on the history of the electric vehicles, the options of their charging and to assess the availability of the charging points in our country and abroad. Additionally, this study provides overview of the electric vehicles available on the market and the types of charging devices and charging options. In conclusion, a large number of the ways and charging types were discovered. Furthermore, we calculated the approximate charging time with regard to the type of charging device and convenience of the charging points. This work also mentions some disadvantages of the electric vehicles, such us the long charging time, charges for the fast charging station use or currently high retail prices of these cars. Despite the prevailing drawbacks, the electric cars are becoming more visible on the roads.
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Intelligent charger for lead-acid accumulators 12V/130A with an option "start-car"
Láznička, Martin ; Červinka, Dalibor (referee) ; Vorel, Pavel (advisor)
This bachelor's thesis is considered on a basic description of car battery charger with a support function “start-car”. A switching power supply creates a base of the equipment-this is why the charger is compact and easily portable. It is designed for 6V and 12V batteries. A charging by a constant voltage with a current limitation (to 0.5A, 5A or 20A) is used. The charger maximal current is 120A for a short-term load, so a proposal of an appropriate thermal protection is included in the project.
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Design of construction, control and electronics for unstable balancing vehicle
Zouhar, František ; Krejčí, Petr (referee) ; Grepl, Robert (advisor)
Thesis deals with design of construction, control and electronics for unstable balancing vehicle. The rst part is focused on the determination of requirements for the function and then design and manufacture of structure in line with set requirements, including 3D models and drawings. The second part is devoted to the creation of simulation models of vehicles using the Lagrange equations of the second kind and using SimMechanics. Also PID and LQR regulators are designed, including the advantages and disadvantages of each regulator for this application. The last part is focused on electronics necessary to vehicle operating. They are mainly power electronics (H-bridge, battery charger, switching supply of voltage board). There are also necessary calculations, complete PCB design and a description of the rmware for the this specifc device.
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Intelligent charger for Pb accumulators
Hadwiger, Tomáš ; Šebesta, Jiří (referee) ; Kratochvíl, Tomáš (advisor)
This bachelor project deals with lead accumulator charging. The properties of this acumulator charger are described here and the best possible way of charging has been based on these properties. The capacity of the accumulators has also been taken into account. The charger itself is able to distinguish between the twelve-volt and the six-volt accumulator. The charger prevents accumulators from overcharging and does not charge damaged ones.It also contains the protection against reversing polarity. The project contains complete scheme, DSP layout, lists of components and their placement on the DPS. The design of the transformator suitable for the charger is also included.
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Uninterruptible Power Supply
Mrázek, Petr ; Harabiš, Vratislav (referee) ; Chmelař, Milan (advisor)
The thesis deals with Uninterruptible Power Supply (UPS) and associated problems of backup power in case of unexpected outages of electricity. Start of work is dedicated to limitation of the electricity supplies, as well as their causes and consequences. Furthermore, brief history of UPS and subsequently distinguish between UPS’s architectures. There is also a description of the energy sources such as batteries, flywheels or fuel cells. Part of thesis describes security of electricity supply in health care facilities, including requirements for emergency power. The own design of UPS is described in the end.
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