Voltage and Frequency Control of Isolated Hybrid Power Systems

Abstract

This paper proposes A hybrid VFDC/PQDC-based MG control scheme for Microgrid(MG) applications particularly islanded applications. A microgrid can be operated in both grid-connected and in autonomous mode. The control of autonomous MG is very complex without the support of public utility and grid. The control of virtual impedance plays an important role to decouple the active and reactive power allocations for energy storage systems (ESS). In this paper, ESSs control method is proposed with V/f droop control (VFDC) and P/Q droop control (PQDC) combined. The proposed method results are verified by using MATLAB SIMULINK.