Homogenization Technique of Nanocrystalline Cores Considering the Inter-Laminar Eddy Currents

Nanocrystalline core is widely used in high-frequency inductors for its standing performance of lower weights and losses. However, the electrical isolation among strips is ensured by the unevenness of the surface but not an absolute isolation by isolating layers like silicon steel sheets. To accurately calculate the loss of the nanocrystalline core, the inter-laminar eddy currents should be considered. We propose a homogenization technique of the nanocrystalline core considering the inter-laminar eddy currents. Compared to the results of the fine-meshed model, the proposed method is validated.