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Three-phase variable autotransformer actuator
Nevřela, Tomáš ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
The aim of this work is to implement an actuator for three-phase variable autotransformer. The project includes a theoretical base of electric actuators on the basis of which is chosen the type of motor, its method of control and regulator, necessary for a specific actuator. Parts of the thesis are design and production of hardware with microprocessor, consisting of control, measurement and power part.
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Power outage simulator
Sýkora, Dušan ; Lieskovan, Tomáš (referee) ; Kohout, David (advisor)
This thesis is concerned with building a smart gadget that is able to simulate blackouts. This simulator is able to interrupt or limit supply of 230 V electricity from a power grid to the tested appliance for adjustable duration and with adjustable frequency. The gadget is controllable remotely via a web interface. For that purpose, components have been selected and a program written for a microcontroller. Finally, functionality has been verified on multiple appliances.
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Three-phase variable autotransformer actuator
Nevřela, Tomáš ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
The aim of this work is to implement an actuator for three-phase variable autotransformer. The project includes a theoretical base of electric actuators on the basis of which is chosen the type of motor, its method of control and regulator, necessary for a specific actuator. Parts of the thesis are design and production of hardware with microprocessor, consisting of control, measurement and power part.
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Electronicly controlled isolating autotransformer
Nedoma, J.
The goal of this work was to build a universal fully controllable laboratory power supply with AC output voltage. Main emphasis has been put on the final quality and durability of the power supply. Output voltage regulation is based on the principle of serial switching of secondary windings. The intelligent microprocessor control with alphanumeric display is also integrated in power supply. Realized power supply is suitable for universal applications, not only in electrical laboratories. Three fuses, electronic current and voltage limiters allow usage of this power supply also in school laboratories. The galvanic isolation is provided by a safety isolation of main transformers.
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