Method for introducing bias magnetization in ungaped cores: “The Saturation-Gap”

The use of permanent magnets for bias magnetization is a known technique to increase the energy storage capability in DC inductors, resulting in a size reduction or increased current rating. This paper presents a brief introduction on the different permanent magnet inductor´s configurations found in scientific literature. A new biasing configuration: The Saturation-Gap, will also be presented, simulated and experimentally tested.