R.Deivanayaki, V.V.Rajasegharan, Dr.L.Premalatha
Super capacitors and batteries are extensively used energy storage devices that deliver an output voltage at the range of 12 to 70v DC. In contrast to super capacitors, batteries have vast scope of applications. A key obstacle in using batteries is that the charger cannot be connected directly to the grid. The focus of this paper is the comparison between various dc-to-dc converters employing soft switching techniques using fixed frequency transitions with zero voltage switching (ZVS). Among the various soft switching configurations, the LCL Series Resonant dc-todc converter with capacitive output filter is proposed. The implementation of the LCL Series Resonant dc-to-dc converter can be improvised by the addition of a ZVT Boost converter at the input side (i.e. ZVT Boost converter followed by the LCL Series Resonant converter) and hence the ZVS can be maintained for wide variations in input voltage and load current
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