A real-time testbed for coordinated control of inverters in LV microgrids

Abstract

This paper presents a coordinated control method for inverter based distributed generators operating in low voltage microgrids. Power flow output for each generator is adjusted using a local controller optimally tuned for operation in low voltage distribution lines. The output active and reactive power set points for each controller is adjusted through a communication network. The real time simultaneous operations of two grid-connected inverters are implemented and tested on a small scale test bed for various case studies. The experimental results confirm the accuracy and effectiveness of the proposed controller.