|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials for Energy and Power Conversion Applications
||Leakage Flux Induced Losses and Shielding in Magnetic Ribbon Cores
||Richard Beddingfield, Kevin Byerly, Mark Juds, Subhashish Bhattacharya, Paul Ohodnicki
|On-Site Speaker (Planned)
Magnetic ribbon cores are a significant advancement for their use in wide bandgap based power electronic converters. These cores meet the high power density and medium frequency excitation requirements that are desired in modern systems. Generally, these cores have a relatively high electrical conductivity that can lead to increased eddy currents over similar ferrite based designs. To mitigate this, the ribbon thickness is reduced to limit the conductive area. This has works well for magnetizing flux induced eddy currents. However, in components with intentional leakage flux such as the dual active bridge transformer, the geometric design can force the flux path to enter the ribbon broad surface causing excessive eddy currents. This work will introduce leakage flux shielding concepts and design guidelines using mixed, isotropic and anisotropic, material cores. It will also provide electrical and magnetic circuit equivalent models for improved understanding and design approaches.
||Planned: Supplemental Proceedings volume