Conference paper
An Efficient Voltage Step-up/down Partial Power Converter (SUD-PPC) using Wide Bandgap devices
This paper proposed a novel topology for stepup/down converter based on the concept of partial power processing, which improves efficiency as well as power density. The unified modulation strategy achieves the auto transition between two operating modes without requiring any additional control. The operating principle is analyzed in detail, from which it is found that diode reverse recovery of Si MOSFETs reduces the voltage regulation range in step-down operation mode.
Therefore, SiC MOSFET is employed in the high voltage side to avoid duty cycle loss. The SPICE simulations based on the SiC and Si devices have been built, and the simulation results verify the effect of using SiC devices. A 400V prototype based on SiC MOSFET has been built. Measurement results confirm the high efficiency in overall voltage range, and the maximum efficiency exceeds 99%.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2021 |
| Pages: | 264-269 |
| Proceedings: | IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia |
| ISBN: | 1665418508 , 1665418516 , 9781665418508 and 9781665418515 |
| Types: | Conference paper |
| DOI: | 10.1109/WiPDAAsia51810.2021.9656053 |
| ORCIDs: | Liu, Chao , Zhang, Zhe and Andersen, Michael A. E. |
