I like the construction of the prius inductor, but this paper gets into powdered cores in a similiar appplication (200v-500v) though the power levels are a little lower than our target (70a@510v). I've never seen an edge wound toroid or even a c-core (I suppose the prius kinda qualifies as a
C core). I was hoping to see a round one somewhere.
http://www.jeet.or.kr/ltkpsweb/pub/p...aspx?ppseq=394