Modelling, design and analysis of three limb high frequency transformer including transformer parasitics, for SiC Mosfet based three port DAB
The work presented in this paper focuses on the transformer modelling, design and parasitic capacitances' effect on transformer operation for three limb high frequency transformers designed for three port Dual Active Bridge(DAB) converter, using 1200V and 1700V SiC devices. The effects of parasitic capacitance due to high speed and high frequency switching enabled by SiC Mosfet devices are investigated in this paper for three limb transformer of DAB converter. The focus of the paper is based on design, estimation and measurement of parasitic capacitance and leakage inductance for three limb high frequency transformer. Detailed transformer model analysis has been realized for three port DAB operation with parasitics included. Two different transformer design approaches for 10kW, 50kHz rating have been carried out and comparative results have been analyzed in this paper.
IECON 2016 42nd Annual Conference of the IEEE Industrial Electronics Society