This document discusses using ant colony optimization to enhance power quality in an autonomous microgrid. The key points are: 1) Ant colony optimization is an intelligent searching algorithm that can be applied for real-time self-tuning of power control parameters to improve voltage and frequency regulation and power sharing in a microgrid. 2) A microgrid consists of distributed generation units like fuel cells, PV cells, and wind turbines interfaced with an electrical distribution network using power electronics. It can operate in grid-connected, autonomous, or transition modes. 3) The proposed approach designs a power controller and current controller using ant colony optimization to control inverters in the microgrid and maintain stable voltage and frequency during autonomous operation