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Uninterruptible AC Power Supply
Jansa, Josef ; Kubíček, Michal (referee) ; Šebesta, Jiří (advisor)
This work deals with the standby power sources for heating circulating pumps for solid fuel. This work also deals with specific design UPS for circulating pump house 230 VAC maximum power of 50W, including automatic battery charger 12V and monitoring units.
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The battery charger module for GSM security system
Predný, Patrik ; Levek, Vladimír (referee) ; Čožík, Ondřej (advisor)
This bachelor thesis focuses on the design of universal module of charger for lithium battery that is constructed for the GSM device from ELEDUS company, placed in inaccessible, or difficult to access terrain. The solar energy will be used for battery charging and ensuring the GSM module power supply. The module dimensions are as small as possible for maintaining the compactness and the design focuses on the maximum resource utilization.
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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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Power Converter for the electric arc welding
Jaša, Jakub ; Vorel, Pavel (referee) ; Patočka, Miroslav (advisor)
This thesis deals with the peripheral design, construction design and implementation welder DC arc. The concept of welder is based on the use of two single action forward converter working-pull. Converters operate at a frequency of 60 kHz. Output current can be adjusted in the range from 0 to 140 A. After switching function the welder can operate as a battery charger. Charging current can be adjusted in the range of 0-70 A. The device is powered from a single phase supply 230 V.
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Uninterruptible Power Supply
Mrázek, Petr ; Harabiš, Vratislav (referee) ; Sekora, Jiří (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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Design and prototyping of electronics for manipulation platform
Ondryáš, Adam ; Andrš, Ondřej (referee) ; Hadaš, Zdeněk (advisor)
Tato diplomová práce je součástí projektu, na kterém pracují dva studenti. Cílem projektu je navrhnout a realizovat řídicí systém pro polohovací platformy. Tento řídicí systém umožňuje napájet polohovací platformy baterií a také je bezdrátově řídit z PC. Projekt se detailně zabývá koncepcíj ednotlivých funkcionalit řidicího systému, návrhem a prototypováním hardwaru řídicí jednotky, návrhem firmwaru pro řidící jednotku a návrhem softwaru uživatelského prostředí. Částmi projektu, kterými se zabývá tato práce, je koncepce jednotlivých funkcionalit a návrh hardwaru řidící jednotky. Hardware řídicí jednotky byl v rámci práce navržen, vyroben a úspěšně otestován. Výstupem práce je tedy vyrobený prototyp řídicí jednotky, který lze v rámci projektu dále rozvíjet.
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Accumulator Charger for Bicycle
Kufa, Jan ; Kubíček, Michal (referee) ; Šebesta, Jiří (advisor)
The aim of this thesis is to suggest a suitable way of charging mobile devices by using bicycle. In the first part of bachelor thesis there are discussed various options for charging the battery on a bicycle, described differences between the alternator and dynamo, and finally the different types of batteries. The second part describes in detail used blocks that were used in the engagement and the reasons of their choice. In the last section there are described the final parameters of the charger.
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LiFePO4 battery charger 14,6 V 100 A
Hanžl, Ondřej ; Folprecht, Martin (referee) ; Martiš, Jan (advisor)
This thesis deals with a design, construciton and testing of a switch-mode power supply (SMPS) which is working as a LiFEPO4 battery charger with output current up to 100~A and output voltage up to 14,6~V. The output voltage and current can be regulated by the operator from zero to maximum value. For this SMPS Half-bridge asymmetrical forward converter with two transformers and common output inductor topology is chosen. The control circuits are run by the IC SG3525. Cascaded regulation of output voltage and current is implemented by two discrete operational amplifiers. Undervoltage protection of the control circuits and independent overcurrent protection on the primary side is also implemented.
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Battery charger for NiCd and NiMH batteries
Drda, Václav ; Šandera, Josef (referee) ; Háze, Jiří (advisor)
The work deals with design of self-contained NiCd and NiMH battery charger using switch-mode operation. The procedure of solution was proposed and based on defined characteristics of charger. The basic aim of the proposal is to obtain maximum utilization of parameters and life of the batteries. The other requirement is ability to diagnose defective of the batteries (short-circuited, disconnected and different capacity than other batteries). The simulation and partial tests served to fabricate the charger. Function was tested in laboratory.
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Microcontroller driven battery charger
Michalčík, Bohumil ; Kopečný, Lukáš (referee) ; Burian, František (advisor)
The first part of the work was dealing in general with switched power supply and types of battery chargers. The second part is made by my own design of microprocessor driven battery charger. The design is based on datasheets and recommended circuit connection. The electrical scheme and also the printed circuit board was designed in Eagle 5.11.0 design system. The battery charger is capable of charging these types of batteries: lead acid, NiMH, NiCd, LiPol a alkaline accumulators, and the maximal output current from charger is 3A. The software implementation and design are also part of this master‘s thesis.
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