Photovoltaic Maximum Power Point Tracking based on an Adjustable Matched Virtual Load

This work is concerned with maximum power point tracking in photovoltaic systems. Under the suggested method, tracking of the maximum power point is accomplished partially by a linear control loop that emulates a nearly matched load line and partially by the fine tuning of this load line employing an iterative process similar to conventional MPPT methods. This way, excellent tracking is achieved both in steady state and in transient situations.