This paper proposes to model a voltage-sensor-based MPPT with voltage reference control technique with a PI controller for the SEPIC converter. The PI controller will minimize the error between the reference voltage (VRef) generated by the MPPT controller and the panel voltage (VPV). Thus, it is an adaptive solution, as if VPV is far from MPP, error will be large and so it will automatically produce large step size (?D) and vice versa. Thus, the MPPT with voltage reference control technique with the association of PI controller can effectively improve the performance of the PV system. The simulations were performed in the environment of MATLAB/SIMULINK.
SEPIC converter, PI controller, PV system, MPPT controller
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