Experimental realisation of an AC-link shunt-series power flow controller

Abstract

Power electronic-based interties in the distribution system are considered an important element for the integration of distributed energy resources. They can provide a series of network services such as active and reactive power control, voltage regulation and harmonic and imbalance compensation that facilitate the integration of these new resources. Despite dc links are usually proposed for this purpose, it is also possible to interconnect radial distribution feeders by means of ac links with direct ac/ac power conversion. This study presents the experimental validation of a current control loop based on feedback linearisation for an ac-link shunt-series power flow controller based on a vector switching matrix converter. The experimental results demonstrate the effectiveness of the proposed control in both steady-state and transient conditions.