Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems

In this paper, a model-based maximum power point tracking (MPPT) technique is presented for two-stage grid-connected photovoltaic (PV) system, where the loci of points (MPPs) specified accurately based on new formulation. formulation, effect both irradiance and temperature taken into consideration, whereas estimated to reduce cost system enhance its reliability. Furthermore, constant generation (CPG) integrated with developed MPPT method facilitate other regulation schemes in PV system. The proposed methodology compared well-known perturb observe (P&O) evaluation. Additionally, modified version P&O included comparison better assessment. different partial shading conditions system’s performance also investigated. DC-link PI controller replaced adaptive transient behavior Moreover, suggested removes DC offsets, which appear case gradient increase or decrease input power. contrast conventional controller, has poor at such circumstances. active reactive exchange grid managed using computationally efficient finite-set model predictive control (FS-MPC) algorithm. switching frequency minimization added as secondary objective weighting factorless procedure. grid-voltage sensors are eliminated an extended Kalman filter (EKF). overall strategy evaluated experimental implementation, hardware-in-the-loop (HIL), matlab/simulink.