A control algorithm for three-phase three-wired active powerfilters under nonideal mains voltages

摘要

In this paper, a control algorithm for the performance improvementnof three-phase three-wired active power filters under nonideal mainsnvoltages is proposed and analyzed. It begins with an analysis of anninstantaneous reactive power algorithm that was previously applied tonthe three-phase active power filter design. In that design, the circuitnperformance was found unsatisfactory under nonideal test scenarios. Ournproposed design was, therefore, motivated in order to solve suchnproblems. In the proposed scheme, not only was the control circuitnsimplified, but it also served as a potential candidate for thenperformance improvement of active filter design. The proposed algorithmnhas been implemented as a prototype. Results of experimentalnverification under various scenarios are presented