A New Kind of Multi-Functional Hybrid Active Power Filter of Microgrid

摘要

Microgrid is an important supplement of the distribution network. Hybrid active power filter (HAPF) has been used in the engineering application widely. But it is often idle and low power working state. The grid-connected inverter can't keep working rated output conditions in real time. The output capacity of it was dissipated. In this paper, a kind of new type HAPF is put forward, which on the basis of the similarity of the original power quality conditioner and the grid-connected inverter unit. This new type HAPF can realize combined to the grid ideally and not affect the function of power quality conditioner. The improved id-iq composite instructions current detection and synthesis method was used. The computer simulation studies of the circuit are done. Finally, the experimental studies are carried out. The performance and feasibility of the approach are tested and verified by the simulation and the experimental results.