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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Battery-powered welding inverter
 Starec, Stanislav ; Folprecht, Martin (referee) ; Vorel, Pavel (advisor)
This master thesis is focused on proposition and following implementation of DC arc welder. This paper is based on semester’s paper, where the first version was realized. The welder is powered by a battery pack with LiFePO4 type cells. Battery cells are protected by BMS circuits. The driving electronics controls the duty cycle step-down (buck) converter in a closed current or power regulation loop. The power regulator has been designed and validated by simulations. Switching power transistors, low side and high side, are implemented by optically isolated gate drivers. Charging the battery is solved by a switching flyback converter. For the charger and the welder is sheet metal construction made of aluminum sheet.
Detailed record
Battery-powered welding inverter
 Starec, Stanislav ; Folprecht, Martin (referee) ; Vorel, Pavel (advisor)
This master thesis is focused on proposition and following implementation of DC arc welder. This paper is based on semester’s paper, where the first version was realized. The welder is powered by a battery pack with LiFePO4 type cells. Battery cells are protected by BMS circuits. The driving electronics controls the duty cycle step-down (buck) converter in a closed current or power regulation loop. The power regulator has been designed and validated by simulations. Switching power transistors, low side and high side, are implemented by optically isolated gate drivers. Charging the battery is solved by a switching flyback converter. For the charger and the welder is sheet metal construction made of aluminum sheet.
Detailed record
Inverter design and control
 Starec, Stanislav ; Kozovský, Matúš (referee) ; Blaha, Petr (advisor)
This bachelor's work is focused on description and proposition of solution in the field of hardware frequency inverters for control of induction motors within 100W of output. Based on known information, specified business requirements and the recommendation of the bachelor's work supervisor real hardware components will be chosen. Part of the paper is focused on the assembly of prototype and firmware writing followed by cooperation testing between the prototype and firmware. The end of this work is dedicated to description of communication through digitally isolated interface of USB to PC.
Detailed record

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