350 rub
Journal Achievements of Modern Radioelectronics №11 for 2012 г.
Article in number:
Zero voltage switch AC/DC power converter
Keywords: AC/DC power converters Zero Voltage Switch ZVS Zero Current Switch ZCS electromagnetic radiation
Authors:
V.Yu. Vasilyev, I.V. Pichugin, Yu.D. Kozlyaev, Yu.E. Semenov, S.M. Gordienko, V.V. Fomin
Abstract:
An AC/DC modular power converter prototype has been developed, manufactured and investigated. The prototype schematic is based on the Zero Voltage Switch (ZVS) technology with basic power converter characteristics 1500 watts power and 27 volts DC voltage. Information materials on the modular power converter units developed by world-wide companies have been analyzed. An ideology of power switch management based on a principle of active management of discharge current of the switch input capacitor at its switch-off has been developed. It allows to save of the switch dynamic characteristics in a wide range of switching currents. Power converter prototype schematics has been developed and an experimental unit has been manufactured and investigated. Power prototype efficiency has been measured to be 89 %, and electromagnetic radiation level in the range of 5 - 1000 MHz has been evaluated to be very low as compared to the investigated samples of the other manufacturers. Directions for further power and efficiency improvement of the prototype are discussed.
Pages: 63-70
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