Performance improvement of shunt active power filter under variable grid frequency condition using complex coefficient filter-frequency locked loop. - Alok Kumar Dubey; Jyoti Prakash Mishra; Amritesh Kumar (Int. J. Circuit Theory Appl., 2021)

An improved derivative-based phase-locked loop for single-phase grid synchronization under abnormal grid conditions. - Faridul Hassan; Alok Kumar Dubey; Amritesh Kumar; Avadh Pati (Int. J. Circuit Theory Appl., 2025)