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Shohei Komeda,Hiroyasu Kifune 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
This paper discusses load voltage characteristics in a parallel-parallel-compensated wireless power transfer (WPT) system. In this paper, the load voltage characteristic is analyzed at three resonant frequencies. As a result, the resonant frequencies to obtain a constant load voltage characteristic is theoretically derived, and thus, the voltage-source operation at the load side is achieved. The derived resonant frequencies fluctuate according to the coupling coefficient and the resistive load value. Therefore, this paper adopts a resonant frequency tracking control method to keep the load voltage constant even if the coupling coefficient and the resistive load value fluctuate. Experimental results exhibit the constant load voltage characteristic of the parallel-parallel-compensated WPT systems and agree with results of the theoretical analysis.
A Novel Quasi-Resonant ZCS-PFM DC-DC Switching Regulator with Loosely-Coupled Flyback Inductors
E.H.Chu,S.Chandhaket,S.Moisseev,E.Hiraki,M.Nakaoka,H.Kifune 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
This paper presents a novel topological prototype of voltage source series quasi-resonant zero current soft-switching pulse frequency modulated dc-dc power converter circuit using IGBTs which incorporates a high-frequency flyback transformer link. Its steady-state operating principle is described on the basis of simulation analysis, along with the open loop controlled power regulation characteristics of the multi-functional coupled inductors linked dc-dc power converter operating under a principle of zero current soft switching commutation.<br/>