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      저자 : Adrian Ioinovici (검색결과 2 건)
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      • High Step-Up, High Power Density Boost Converter Integrated with Switched Capacitor-Diode Cell

        Yafei Hu,Adrian Ioinovici 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

        A large dc conversion ratio non-isolated hybrid converter is obtained by integrating a capacitor-diode cell into a boost circuit. A larger conversion ratio comparing with the conventional boost converter is obtained. And the cost for this larger dc gain is just one additional cell formed by a diode and a capacitor. The new structure presents a minimum of components, positioned in such a way as to decrease the size of the capacitors. A high power density is obtained due to the use of smaller size capacitors. The single active switch is placed with the source referenced to the ground, rendering simplicity in its driving. The theory, simulation and experimental results showed a reduced voltage stress on the switches and a high efficiency.

      • A Single Switch Boost-Flyback DC-DC Converter Integrated with Switched-Capacitor Cell

        Tsorng-Juu Liang,Shih-Ming Chen,Lung-Sheng Yang,Jiann-Fuh Chen,Adrian Ioinovici 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5

        Without extreme duty ratio or complexity of circuits, by employing coupled-inductor and switched-capacitor cell achieved high voltage conversion ratio with a single switch is proposed in this paper. Coupled-inductor transfer source energy to secondary side through entire switching period, the leakage energy of coupled inductor is efficiently recycled; the inrush current problem on switched capacitors was restrained by leakage inductor of coupled-inductor; all the above features account to the high efficiency performance. The operating principles and steady-state analyses of continuous-conduction mode and boundary-conduction mode are discussed in detail. To verify the performance of the proposed converter, a 200 W/400 V prototype sample is implemented, the maximum efficiency is up to 96.3%; and full load efficiency is 92.4%.

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