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High-frequency flyback transformer linked utility-connected sinewave soft-switching power conditioner using a switched capacitor snubber

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4 Author(s)
S. Chandhaket ; Dept. of Electr. Eng., Yamaguchi Univ., Ube, Japan ; K. Ogura ; M. Nakaoka ; Y. Konishi

In this paper, the high-frequency switching pulse modulation utility-interfaced power conditioner with a flyback high-frequency transformer link has been proposed. With the aid of the switched-capacitor resonant snubber cell, the high-frequency switching devices in the primary side of the proposed DC-to-AC power inverter can be turned-off with zero voltage soft-switching (ZVS). Moreover, the proposed power conditioner operates the currents in the discontinuous conduction mode (DCM) and takes the advantages of zero current soft switching turn-on. Its output port is connected directly to the utility grid AC power source. At the end, the prototype of the proposed HF-UPC is built and tested in the experiments. Its power conversion processing is verified and the output current is qualified in accordance with the guidelines of the power systems.

Published in:

Power Electronics and Motion Control Conference, 2004. IPEMC 2004. The 4th International  (Volume:3 )

Date of Conference:

14-16 Aug. 2004