Abstract
The paper treats about main problems of one phase DC-AC microinverters
that allow single solar cell to be joined with the grid. One of the issues
is to achieve high voltage gain with high efficiency in DC circuit, which
is necessary for proper operation of inverter. The operating principles,
results of practical implementation and investigations on boost-flyback
converter, which meets mentioned demands, are presented. (high step-up
DC-DC boost-flyback converter for single phase grid microinverter).
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