High-performance breathable magnetic core for high-frequency power electronic systems

The magnetic components (inductors and transformers) that consist of magnetic cores and windings play an important role in power electronic systems. The development of fast-switching semiconductor devices has led to an increase in the working frequencies of power electronic systems. However, high-frequency magnetic flux causes severe loss and heat generation in magnetic cores. This heat is difficult to dissipate owing to the typical solid structure of magnetic cores. Consequently, the risk of heat-induced damage has increased in power electronic systems. Magnetic materials with low conductivities may reduce loss and temperature rise. However, they increase the volume/weight and cost. To solve this problem, we propose a high-performance breathable magnetic core based on the magnetic flux skin effect with magductance. This can reduce the amount of magnetic materials, volume, and weight and facilitate loss reduction and heat exchange. In addition, it provides a new avenue for the study, design, and optimal production of various electromagnetic devices.