International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) / International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), İstanbul, Türkiye, 27 - 29 Ağustos 2019, ss.389-394
The demand for high power density and low-cost power electronic circuits increases day by day. Recently, planar transformers that can help meet this demand have been drawing more attention. Good thermal characteristics, compact profiles and high efficiency are the advantages of planar transformers. Despite these advantages, high common mode noise values are observed due to high capacitive effects between overlapped layers and turns of planar transformers. The Modular Layer Method (MLM) is used to model planar transformers by using ideal electrical circuit elements. However, it is not sufficient to represent the capacitive effects due to the overlapping layers. In this paper, two different approaches have been proposed to improve the MLM to include these capacitive effects. The results obtained from the experimental set-up show that the proposed models work very accurately. Also, a new approach to planar transformer structure is proposed that leads to very low common mode noise.