A Robust Adaptive Inverse Hyperbolic Sine Function (RA-IHSF)-based Controlled Solar PV Grid Integrated System

This paper aims to maintain power quality for a two-stage solar photovoltaic (SPV) gird integrated system in case of dynamic disturbances such as unbalanced nonlinear load and variable solar irradiance. The proposed robust adaptive inverse hyperbolic sine function (RA-IHSF)-based control primarily extracts the fundamental load current weight component and is employed to control the voltage source converter (VSC) by altering the switching patterns of pulses. The maximum power can be retrieved from the SPV generation system by implementing a maximum power point tracking control based on incremental conductance method along with DC-to-DC boost converter. The VSC feeds active power to load and grid together with reactive power compensation. The proposed control technique also provides load balancing and mitigates harmonic content of grid current along with power factor correction. The response of the system to the implementation of proposed RA-IHSF illustrates that it is more expedient as compared to conventional adaptive filter-based algorithms showing improved dynamic response with less computational burden.