Advanced Single-Phase DSC-Based PLLs

In three-phase systems, using the delayed signal cancelation (DSC) operators is one of the most popular approaches for designing advanced phase-locked loops (PLLs), particularly for applications where a high disturbance rejection ability is demanded. In single-phase systems, however, they have not received a considerable attention. The aim of this paper is to develop advanced DSC-based PLLs for single-phase applications. To this end, three PLLs are designed and presented. The first is based on adaptive DSC operators, and the other two are based on nonadaptive operators. The design aspects of these PLLs are discussed in detail, and their performances are evaluated using experimental results.