A control method for one phase solar converters

This paper shows a novel control strategy for one phase solar converters to minimize the effect of the one phase power fluctuation. This fluctuation has a serious effect to the efficiency of the system: the PV does not operate in the maximum power point (MPP), the harmonic content of the output current is significant that´s why compensation of the power fluctuation is needed. In this study a method is shown, which calculates the effects of the power fluctuation to the DC link voltage feedback and compensates with it. This compensation method has a good static- and dynamic behavior: The DC feedback voltage does not have significant fluctuation and can follow the changing in the grid´s voltage. The results were simulated in Matlab Simulink and with a one phase solar voltage source inverter experiments were taken. The simulated and the experimental result confirm that this compensation method also has a good static- and dynamic behavior.