Boost Converter Control using LQR and P&O Technique for Maximum Power Point Tracking

Extracting the maximum power out of the photovoltaic system is essential to enhance its efficiency and performance, in this paper a maximum power point tracking technique (MPPT) based on the perturb and observe algorithm (P&o) and the linear quadratic regulator (LQR) is proposed, the LQR controller is designed based on the linear state-space model of the boost converter and it was extended by an integrator to ensure zero steady-state error, the P&O algorithm is used as an outer loop controller to generate a reference voltage required for the LQR, the proposed controller shows excellent performance and robustness when compared to PI controller and the overall system tracks the maximum power point with satisfactory results.