Implementation of adaptive control strategies for PV system integrated unified conditioner for optimal power quality regulation

• PV-UPQC is with advance new hybrid adaptive controllers for performance enhancement. • ANF-ISC for series compensation has been employed. • AHTF-MAF for shunt compensation has been proposed. • Adaptive controllers have been analyzed at dynamic environmental conditions. • Reduction in THD, from 33.45 % to 2.45 % with the adaptive controllers. This research is to examine the performance and utilization of Solar Photovoltaic based hybrid system to supply regulated power to the local consumers. Accurate power generation by the proposed Solar Photovoltaic based system is desired to maintain power quality under various distorted and weak grid scenarios. The considered system utilizes an adaptive notch filter based Instantaneous Symmetrical Component controller for series compensation of SPV-UPQC to eliminate dynamic voltage conditions to protect the consumer loads. For the mitigation of current quality issues in presence of non linear loads, Adaptive Hyperbolic tangent function based controller has been employed. Initially, simulation based approach for verification of proposed ANF-ISC Controller for series compensation and HTF controller for current regulation are utilized to evaluate the SPV-UPQC performance. Under weak grid voltage conditions such as voltage sag and voltage swell, proposed ANF-ISC Controller is used for voltage regulation to protect the consumer loads. The validation of the simulation based performance through MATLAB/Simulink platform has been achieved through experimental prototype development. Efficiency of the system under abnormal current scenarios, distorted grid voltage conditions has been validated by utilization of proposed adaptive controllers. Moreover, under the dynamic harmonic content scenario, the proposed system has shown effective reduction in THD, from 33.45 % to 2.45 % .The results obtained, that are presented in the research confirms the regulation of the power quality.