Three-phase transformer can be separated into relatively independent functions of flyback transformer and push-pull transformer with the reluctance produced by the magnetic gap in the central phase the flyback transformer produces only common-mode flux in the magnetic circuit of push-pull transformer and does not influence its output signal the magnetic flux in push-pull transformer is blocked by the magnetic gap and can only flow through the outer magnetic loop. Structure is simplified cost is cut down efficiency and reliability are improved all by the high frequency three-phase transformer technique that carries out functions of flyback transformer as well as push-pull transformer at the same time. Abstract: Three-phase current-fed flyback push-pull dc-dc converter is proposed in this paper, which is a new circuit topology putting into practice based on current-fed flyback push-pull dc-dc converter.
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