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sábado, 7 de junho de 2014
ZVT Resonant Boost Converter with New Auxiliary Circuit Kim Mo Se Dept. of Mechatronics Engineering Sungkyunkwan University 2013
ABSTRACT
Switch mode power supplies have become smaller and lighter due to higher switching frequency. However, higher switching frequency causes lots of periodic losses at switch turn-ON and turn-OFF,resulting in increasing losses of the whole system.Therefore,many converters have been presented that use resonance circuit to reduces witching losses. In this paper,A new zero voltage transition resonant boost converter is proposed.The conventional boost converter generates switching losses at turn ON and OFF,and this causesa reduction in the whole system’sefficiency.The proposed ZVT resonant boost converter utilizes a method using an auxiliary circuit with a resonant inductor,capacitor and two auxiliary switch. Therefore the proposed zero voltage transition n resonant boost converter reduces switching losses more than the conventional hard switching converter. Also,the experimentis conducted with the 4[kW],30[kHz]converter which steps up the voltage from 200[V]to 400[V].It is confirmed that the result of the experimentand that of the simulation are same,and the validity of the converter is verified.
FULL THESIS
https://www.mediafire.com/?m14iamz6pzj6kj7
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