Practical Study of Mixed-Core High Frequency Power Transformer

The design of medium- to high-frequency power electronics transformer aims not only minimize the loss in windings and core, but its heat removal features should also allow optimal use both core copper. feature (e.g., thermal conduction) a is complex because there exist multiple centers. bulk total concentrated around small segment assembly where are overlaid. primary winding most constrained thermally. For superior copper, temperature rise different segments be well below their respective safe operating limits. In practice, cores same soft-magnetic materials traditionally used. To achieve profile for better long-term performance, this article proposes mixed-core configuration. new core(s) would replace parent ones from laid. characteristic share increased burden transformer. obtain qualitative insight magnetic proposed thoroughly validated practically two high-power applications. first case, always energized rated value, second one, at current capacity.