Maximum power point tracking of renewable energy generators based on sum of dynamic and static conductances

The manuscript presents a method of interfacing renewable energy generators (REG) by a new method of maximum power point tracking (MPPT). The method utilizes the nonlinear sum of REG static and dynamic conductances as MPPT loop regulation variable. Static and dynamic conductances are both operating point and environmental variables dependent. Nevertheless, their sum is always zero when the REG operates at maximum power point (MPP). Consequently, driving the sum to zero assures MPPT for any environmental conditions set. It is shown that in case cascaded MPPT-voltage control structure loop is adopted, utilizing a simple integral controller may easily accomplish the task.