Modeling and analysis of electromagnetic radiation from solar cell in photovoltaic generation system

Recently, the negative effect of leakage current in the DC side of photovoltaic (PV) generation system has been widely reported. Due to the large area of PV array, it becomes a secondary noise source that generates radiation emission. This paper presents a detailed analysis of near field radiation of photovoltaic panels. A novel antenna model is proposed to study this phenomenon. In contrast with other literature, the novelty of this paper reveals that radiation emission should be divided into two categories: low-frequency emission and high-frequency emission. It is proven that near field distribution of PV panel is frequency related and high-frequency near-field emission can differ dramatically from low-frequency condition. These proposed concepts have been verified experimentally with in-circuit tests in a 100 kVA PV generation system.