Abstract
In order to ensure that the photovoltaic power generation system can quickly reach the maximum power point and can operate stably, a maximum power point tracking (MPPT) controller combined with a correction link linear active disturbance rejection control (LADRC-C) is proposed and designed. In the traditional linear active disturbance rejection controller, the lead-lag correction idea is introduced to improve the output channel of the linear expansion state observer, and the bandwidth of the disturbance observation channel is adjusted by the correction link. In this paper, the mathematical model of the photovoltaic cell system is analyzed, and the second-order linear extended state observer (LESO) matrix in the mathematical model of the system controller is optimized to improve the observation accuracy of the LESO. Finally, the frequency domain analysis of LADRC-C, and the Matlab/Simulink simulation platform verifies that the controller can significantly improve the tracking speed of the MPPT system and greatly reduce the power oscillation.
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