MPPT Efficiency: Noise Sources and Methods for Reducing Their Effects
3.1 Low-Frequency Disturbances in Single-Phase Applications
AC applications of PV systems require a power processing element able to convert the DC power generated by the PV unit into AC power, at 110 or 230 V rms voltage rating by adapting the PV voltage to that needed by the stage performing DC/AC conversion. The adoption of single-stage power processing units is the best choice, especially from the point of view of reliability and efficiency. Some commercial solutions, especially in the power range of interest for residential power plants (e.g., from Fronius and SMA), are based on the topology depicted in Figure 3.1, which consists of only a pulse-width modulation ...
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