at Google ScholarTitle data
Nehmer, Dominik ; Hepp, Maximilian ; Wondrak, Wolfgang ; Bakran, Mark-M.:
Switching a eMode GaN HEMT under conditions of an inverter module for electrical vehicles (EV).
2023
Event: 25th European Conference on Power Electronics and Applications (EPE 2023)
, 04.09.-08.09.2023
, Aalborg, Dänemark.
(Conference item: Conference
,
Paper
)
Abstract in another language
In this paper the switching behavior of a eMode GaN device under conditions of a power module for electrical vehicles will be presented. During turn-off of the passive switch parasitic turn-on (PTO) can occur. The PTO will lead to higher losses especially in the low load dominated WLTP cycle. An advanced version of a Miller clamping circuit to prevent PTO will be shown. This circuit will reduce the losses significantly. A version with loss optimized PTO, higher gate resistance and with Miller circuit will be compared. The switching speed with Miller clamping is limited by the overvoltage. The condition with the highest overvoltage will be identified, which is necessary for the selection of the external gate resistor. To prevent PTO a lower drive voltage is also beneficial. However, this leads to a high reverse voltage drop of the GaN due to its reverse conduction characteristics. The losses in the WLTP cycle are high, which will be shown for different drive voltage and turn-on delays.
Further data
| Item Type: | Conference item (Paper) |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties > Faculty of Engineering Science > Chair Mechatronics > Chair Mechatronics - Univ.-Prof. Dr.-Ing. Mark-M. Bakran Profile Fields > Advanced Fields > Advanced Materials Profile Fields > Emerging Fields > Energy Research and Energy Technology Research Institutions > Research Units > Zentrum für Energietechnik - ZET Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Mechatronics Profile Fields Profile Fields > Advanced Fields Profile Fields > Emerging Fields Research Institutions Research Institutions > Research Units |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
| Date Deposited: | 20 Oct 2023 05:57 |
| Last Modified: | 10 Jul 2024 08:44 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/87306 |