Droop Control Algorithm Design for Power Balancing in Island Inverter Based Microgrid

Abstract

In this article, a droop control algorithm is proposed for power distribution between sources in an island inverter-based microgrid without common central control. The analyses of the line impedance influence (resistive, inductive, and combined) are provided to show the impact on the power flow between a grid and a converter. Line impedance character influences the droop control algorithm performance. The impact of the accuracy of the setting, concerning line impedance, of the proposed droop control algorithm is then tested in a simulation. For the simulation, a microgrid model was built in the Simulink environment (MATLAB) with the PLECS toolbox. In the conclusion, the potential benefits and applications of the proposed droop control are discussed.

Keywords

• control algorithm
• droop control
• line impedance
• microgrid
• power balancing