T05.8 - Simulation and Experimental Research on Cooling Performance of Fully-Immersed Evaporative Cooling High-Frequency Transformer

Tuesday, March 18, 2025

11:20 AM – 11:40 AM ET

Location: Level Three, A301

Technical Lecture Presenter(s)

Lingyu Zhu

Xi'an Jiaotong University

Co-Author(s)

ZL

Zhanlei Liu

Xi'an Jiaotong University
YG

Yuntian Gao

Xi'an Jiaotong University
YD

Yongliang Dang

Xi'an Jiaotong University
SJ

Shengchang Ji

Xi'an Jiaotong University
Cao Zhan

Tesla

Efficient and reliable cooling scheme design is non-trivial for high-power high-frequency transformer (HFT). Traditional air cooling HFT faces the problem of high temperature rise. To tackle this problem, fully-immersed evaporative cooling technique is applied in the cooling of HFT in this paper. An evaporative cooling HFT prototype and an air cooling HFT prototype are made. The power losses of HFT are calculated. A finite element (FE) simulation model for the evaporative cooling HFT is established to calculate the temperature field. A temperature test experimental platform is built to measure the temperature of HFT. The proposed FE model can accurately calculate the steady-state temperature of evaporative cooling HFT. In addition, the temperatures of evaporative cooling HFT and air cooling HFT are compared. Experimental results show that evaporative cooling technique can significantly decrease the steady-state temperature rise of HFT and improve the temperature uniformity.