Preizkušanje gonilnika vrat STGAP4S za krmiljenje SiC MOS tranzistorjev v razsmernikih

Tominec, Nik (author), Jankovec, Marko (mentor)

Diplomsko delo obravnava razvoj in preizkušanje razvojne plošče za gonilnik vrat STGAP4S ter potrditev njegove primernosti za učinkovito krmiljenje SiC MOS tranzistorjev v razsmerniku električnega pogona brezpilotnega letalnika Pipistrel Nuuva V300. V teoretičnem delu so predstavljeni sinhroni elektromotorji in razsmerniki s SiC MOS tranzistorji. Opisana sta zgradba in delovanje klasičnih silicijevih ter naprednejših SiC MOS. Podrobneje je predstavljen SiC modul CAB425M12XM3, ki se uporablja v razsmerniški aplikaciji letalnika Nuuva V300. Opisano je delovanje zapornih stikalnih pretvornikov in komunikacija prek vodila SPI. Analiziran in opisan je gonilnik STGAP4S, vključno z zaščitnimi funkcijami ter integriranim krmilnikom za zaporni stikalni pretvornik. V praktičnem delu je predstavljen razvoj vezja od shematske zasnove do izdelave tiskanega vezja. Na izdelanem tiskanem vezju se je izvedel preizkus preklopnih časov, frekvenc in delovnih ciklov. Predstavljeni so rezultati meritev in testov ter potrditev primernosti gonilnika. Razvojna plošča z gonilnikom STGAP4S je bila uspešno razvita in preizkušena. Rezultati meritev so pokazali, da lahko STGAP4S zagotavlja potrebne napetostne nivoje za preklapljanje SiC MOS tranzistorjev in pri tem zagotavlja potrebne tokove za preklope s časi pod 0.5 μs. Gonilnik STGAP4S se je izkazal kot primeren za uporabo v razsmerniku Nuuva V300.

• Language: Slovenian
• Keywords: brezpilotni letalnik, električni pogon za letalske aplikacije, razsmernik z SiC tehnologijo, gonilnik vrat SiC MOS tranzistorjev
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FE - Faculty of Electrical Engineering
• Year: 2025
• PID: 20.500.12556/RUL-171390
• COBISS.SI-ID: 248105987
• Publication date in RUL: 25.08.2025

Secondary language

• Language: English
• Title: Testing the STGAP4S Gate Driver for Controlling SiC MOSFETs in Inverters

Abstract

The thesis focuses on the development and testing of a test board for the STGAP4S gate driver and confirms its suitability for the efficient control of SiC MOS transistors in the inverter of the electric propulsion system of the Pipistrel Nuuva V300 unmanned aircraft. In the theoretical part, synchronous electric motors and inverters powered by SiC MOS transistors are presented. The structure and operation of both conventional silicon MOS transistors and more advanced SiC MOS transistors are described. The SiC module CAB425M12XM3, used in the inverter application of the Nuuva V300, is explained in more detail. The operation of flyback converters and SPI communication is also discussed. The STGAP4S gate driver is analyzed and described, including its integrated protection features, as well as the embedded flyback controller. The circuit development process is presented, from schematic design to printed circuit board fabrication. Finally, measurements and their results are shown. The development board with the STGAP4S driver was successfully developed and tested. Measurement results showed that the STGAP4S can provide the necessary voltage levels for switching SiC MOS transistors while delivering the required currents for switching times within 0.5 μs. The STGAP4S driver proved to be suitable for use in the Nuuva V300 inverter.

• Keywords: unmanned aerial vehicle, electric propulsion for aviation applications, inverter with SiC technology, gate driver for SiC MOS transistors