Design and Testing of 1.44 kVac / 270 Vdc 50 kW Solid-state Transformer Cell for Data Centers
Conference: PCIM Asia Shanghai Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
09/24/2025 - 09/26/2025 at Shanghai, China
doi:10.30420/566583006
Proceedings: PCIM Asia Shanghai Conference 2025
Pages: 8Language: englishTyp: PDF
Authors:
Wu, Xin; Long, Haihong; Wang, Haoxiang; Zhou, Yi; Wang, Wenxin; Xu, Dehong
Abstract:
A solid-state transformer (SST) is designed to step down 10 kVac medium-voltage (MV) to 270 Vdc for data center application. To reduce the number of cascaded cells in the SST, three-level topologies combined with 1700 V SiC devices are used in the cells. The cell is composed of the front-end stage threelevel Boost PFC (TLB-PFC) AC/DC converter and the back-end stage three-level LLC (TL-LLC) isolated DC/DC converter. The design of the cell is introduced. The prototype of the 50 kW SST cell is built and tested by the experiment.