THE APPLICATION OF MAXIMUM POWER POINT TRACKING TECHNIQUE IN A PV-W/G HYBRID SYSTEM

摘要

In this paper, the most common maximum power point tracking (MPPT) techniques, which have been appliedin both photovoltaic (PV) and wind generating (W/G) systems, are reviewed. Results of the application of anovel MPPT technique to a hybrid renewable energy system are also presented. The proposed MPPT unit ispart of an Energy Management System (EMS) composed of DC/DC power converters controlled by amicrocontroller unit. The advantage of the proposed method, compared to other techniques used in the past, isthat the generated power controls directly the DC/DC converters, while it does not require the exactknowledge of the optimal PV and W/G power vs. voltage and speed of rotation characteristics, thus reducingthe complexity of the system. The experimental results show that by the use of the proposed MPPT controlmethod the power produced by the PV and W/G sources is near optimal.