VP-ZA-LMS Control Algorithm for Double-Stage Grid Integration of Solar PV System

The present study presents the integration of double-stage solar PV system using variable parameter-based zero attracting least mean square control algorithm (VP-ZA-LMS) with the grid. The VP-ZA LMS gives fast transient and swift response as compared to other control algorithms like simple LMS and LMF. Extraction of maximum power from PV array is achieved using incremental conductance (INC) maximum power tracking. System is simulated in MATLAB software. Simulation results and performances under various operating conditions like steady state, varying insolation and load unbalancing are considered.