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Three Phase Line Active Rectifier
Miko, Radoslav ; Patočka, Miroslav (referee) ; Červinka, Dalibor (advisor)
Diploma thesis deals with problems of power factor correction and total harmonic distortion of line current in three phase industrial power supplies. It focuses mainly on using of single phase active PFC topologies based on the principle of step up converter, which are applicable to three phase systems. Verification of operation and comparison of parameters of several circuits was done by simulation in program Matlab Simulink. Then for selected circuit of active PFC was done complete design. The result is a prototype of single phase active PFC circuit with an output power 2 kW for input voltage range from 180 to 528 V (47 – 63 Hz) and a prototype of three phase active PFC circuit with an output power 6 kW for input voltage range from 3 x 180 to 3 x 528 V (47 – 63 Hz).
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Miniature high efficiency DC/DC boost converter
Miko, Radoslav ; Vašíček, Adam (referee) ; Červinka, Dalibor (advisor)
Bachelor thesis deals with design and implementation of the DC/DC converters for charging notebook in cars. Variant 1 with parameters 9 – 18 V/19 V – 5 A is designed for 12 V system, typical for cars. Variant 2 introduce wide input range DC/DC converter with parameters 9 – 32 V/19 V – 5 A designed for using in 12 – 24 V system, thus usable in car or truck. It is also possible to use the converter in the supply system of small personal airplanes or in army supply systems which corresponds to the input voltage range. The main requirements are minimal size of converters, high mechanical durability for hard condition of operation and maximal efficiency with using a synchronous rectifier.
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Miniature high efficiency DC/DC boost converter
Miko, Radoslav ; Vašíček, Adam (referee) ; Červinka, Dalibor (advisor)
Bachelor thesis deals with design and implementation of the DC/DC converters for charging notebook in cars. Variant 1 with parameters 9 – 18 V/19 V – 5 A is designed for 12 V system, typical for cars. Variant 2 introduce wide input range DC/DC converter with parameters 9 – 32 V/19 V – 5 A designed for using in 12 – 24 V system, thus usable in car or truck. It is also possible to use the converter in the supply system of small personal airplanes or in army supply systems which corresponds to the input voltage range. The main requirements are minimal size of converters, high mechanical durability for hard condition of operation and maximal efficiency with using a synchronous rectifier.
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Three Phase Line Active Rectifier
Miko, Radoslav ; Patočka, Miroslav (referee) ; Červinka, Dalibor (advisor)
Diploma thesis deals with problems of power factor correction and total harmonic distortion of line current in three phase industrial power supplies. It focuses mainly on using of single phase active PFC topologies based on the principle of step up converter, which are applicable to three phase systems. Verification of operation and comparison of parameters of several circuits was done by simulation in program Matlab Simulink. Then for selected circuit of active PFC was done complete design. The result is a prototype of single phase active PFC circuit with an output power 2 kW for input voltage range from 180 to 528 V (47 – 63 Hz) and a prototype of three phase active PFC circuit with an output power 6 kW for input voltage range from 3 x 180 to 3 x 528 V (47 – 63 Hz).
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