Abstract
This letter proposed an analog control strategy for a flyback microinverter, which can calculate the output power by multiplier-less power calculation circuit, while the maximum power point tracking is realized by controlling the maximum duty cycle of the main switch. The proposed analog control method is quite simple with low cost. It is applied with a 100-W single-phase microinverter in a discontinuous conduction mode, and the simulation and experimental results demonstrate its feasibility.
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