Considerable photovoltaic (PV) panels are installed on building roof, which are exposed to lightning strike at a high risk. Lightning electromagnetic (EM) field will induce a high voltage, which can damage the electronic devices of PV system. By using the method of moments, the EM coupling among the lightning channel and roof structure is modeled, and the induced voltage of PV array is calculated. The influences of building structure, roof material, and shape are discussed. The induced voltage is strongly dependent on the induced current on rooftop generated by the lightning EM field. Since th...
