Topology and control of active power filter fed by DG source

This chapter proposes a novel configuration of photovoltaic (PV) interactive three-phase shunt active power filter dedicated to harmonic currents elimination, power factor improvement, and active power injection. Unlike the traditional filter topologies that are based on DC–DC converters, this new solution is associated with PV source through a single-stage conversion chain based on a quasi Z-source inverter (QZSI). Therefore the extra DC–DC boost converter is no longer required since the QZSI is able to ensure the tasks of the conventional system with a single configuration, which eventually decreases the size and cost of the system. The proposed active power filter is evaluated in terms of total harmonic distortion (THD), reactive power compensation, and maximum power point tracking accuracy through extensive simulations under unsteady irradiance and dynamic load. The proposed configuration is validated using hardware-in-the-loop implementation based on dSPACE 1103 and OPAL-RT OP5600 platforms.