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Step-up switched power source
Žamberský, Jan ; Boušek, Jaroslav (oponent) ; Pavlík, Michal (vedoucí práce)
This work focuses on describing different voltage regulators with a specific focus on the isolated topologies. Then there is a discussion about the best choice for anodic bonding, which means high voltage, low current requirements. Next part explores difficulties faced when designing such a converter and what and how needs to be taken care of. Afterwards, there is the own design of the regulator with described steps of optimization, followed by the simulation results. Two different approaches are compared and the best solution is then selected. Way of making the output bipolar is shown. Final parts focuses on the hardware implementation of such a design and measurement of its performance.
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Electromagnetic pulse accelerator of projectiles
Žamberský, Jan ; Jirák, Josef (oponent) ; Frk, Martin (vedoucí práce)
This work focuses on using magnetic field to accelerate projectile in a device called coilgun. It consists of two parts, first is theoretical discussing magnetism and its use, the other part is about coilgun itself, its benefits and drawbacks. Followed by series of measurements on two experimentally built coilguns and trying optimize it to achieve best results. First part discusses multiple topics. In the beginning, there is a small section defining magnetic field and other constants and phenomenons connected with it. Next two chapters are focused on different types of material, mainly ferromagnetics, how they react to magnetic field and what parameters we can follow, followed by a list of several applications of magnetic field in different areas of human society. The second part describes main principle of coilgun and how the prototypes were made. Measurements on a first prototype consist of trying different materials for projectile, various dimensions of it and benefits of using external shell for accelerating coil. There is also a chapter discussing velocity measurement of a projectile. Second prototype is trying to avoid all the flaws, which were found on the first prototype and find a benefits of using multiple acceleration stages.
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Electromagnetic pulse accelerator of projectiles
Žamberský, Jan ; Jirák, Josef (oponent) ; Frk, Martin (vedoucí práce)
This work focuses on using magnetic field to accelerate projectile in a device called coilgun. It consists of two parts, first is theoretical discussing magnetism and its use, the other part is about coilgun itself, its benefits and drawbacks. Followed by series of measurements on two experimentally built coilguns and trying optimize it to achieve best results. First part discusses multiple topics. In the beginning, there is a small section defining magnetic field and other constants and phenomenons connected with it. Next two chapters are focused on different types of material, mainly ferromagnetics, how they react to magnetic field and what parameters we can follow, followed by a list of several applications of magnetic field in different areas of human society. The second part describes main principle of coilgun and how the prototypes were made. Measurements on a first prototype consist of trying different materials for projectile, various dimensions of it and benefits of using external shell for accelerating coil. There is also a chapter discussing velocity measurement of a projectile. Second prototype is trying to avoid all the flaws, which were found on the first prototype and find a benefits of using multiple acceleration stages.
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Step-up switched power source
Žamberský, Jan ; Boušek, Jaroslav (oponent) ; Pavlík, Michal (vedoucí práce)
This work focuses on describing different voltage regulators with a specific focus on the isolated topologies. Then there is a discussion about the best choice for anodic bonding, which means high voltage, low current requirements. Next part explores difficulties faced when designing such a converter and what and how needs to be taken care of. Afterwards, there is the own design of the regulator with described steps of optimization, followed by the simulation results. Two different approaches are compared and the best solution is then selected. Way of making the output bipolar is shown. Final parts focuses on the hardware implementation of such a design and measurement of its performance.
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