OCD를 이용한 태양광 발전의 MPPT 제어

The application of photovoltaic(PV) has been increasing popular, especially in remote areas, where power from a utility is not available or is too costly to install. The power delivered by the PV module depends on the irradiation, temperature and shadowing conditions. The PV panel has a nonlinear characteristics and the power has maximum power point(MPP) at a certain working point with coordinates voltage and current of MPP. Since the MPP depends on solar irradiation and cell temperature, it is never constant over time. thereby maximum power point tracking (MPPT) should be used to track its changes. This paper is proposed optimal current detdect(OCD) control of PV system searching parameter corresponding to weather conditions. The proportionality coefficient of the prediction line is automatically corrected using the hill clinbing method(HCM) when the panel temperature of the solar arrays is changed. This paper is proposed the analysis results to verify the effectiveness of this controller.