Design Considerations for Single-Phase Line Frequency Transformers Applied at Photovoltaic Systems

Abstract

The issue of dc current injection at low voltage autonomous or interconnected grids as a result of photovoltaic (PV) systems integration is thoroughly discussed in this paper. This paper focuses on the sinusoidal pulsewidth modulation inverter with a low-frequency step-up transformer, as this was widely used in the past at PV grid connected applications… (More)

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