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A High Speed Solar MPPT Controller Design

This paper describes a method for designing high speed solar MPPT controller. The basic MPPT algorithm adopts conventional P&O method. Instead, the voltage controller design method is presented to increase the MPPT tracking speed. The proposed method is based on the frequency domain design which is derived from the state space averaging model of the solar boost converter. The voltage controller can be designed with the requirements of zero steady state error, no overshoot and fast settling time. The theoretical maximum MPPT update speed can be identified using the performance of the voltage controller. The optimal control gains are selected using the MATLAB SISOTOOL library with interactive manners. The performances of the proposed methods are demonstrated using the PSIM simulation.