Most of the active current sharing methods are based on a communication network. The link is also used with improved droop control to achieve precise load and regulate voltage at common DC bus. Conversely, conventional method that considered decentralized becomes more attractive for controlling parallel-connected converters in microgrids. methods' main drawbacks associated unequal deviation In ...

In this paper an analytical approach is conducted to evaluate the droop control method in an islanding microgrid. Droop control is the key solution for sharing the demand power between generators in autonomous microgrids where there is no support from the electricity distribution grid. In the paper, three important load types are investigated to verify the droop control performance. First, coup...

This paper presents an accurate control scheme for active and reactive power sharing in a microgrid consisting of two distributed generation (DG) units. Each DG unit within the microgrid utilizes a structurally simple controller for adjusting its power components. The proposed method combines the droop, and average power sharing (APS) schemes to improve the accuracy of reactive power sharing co...

The droop control strategy is the most common approach for microgrids control but its application is limited due to frequency deviation following a load change. Complementary control strategy has then been proposed to solve the problem using a communication network. However, under this strategy, regular loads profile produces a continuous change of output power of all distributed generators (DG...

Micro grids being a new developing technology operate in two distinct modes of operation, namely, the utility-grid-connected mode and the autonomous (or islanded) mode. In transition from the utility-grid-connected mode to the autonomous mode, the frequency of a micro grid can be seriously affected due to unbalance between power generation and power demand and at that moment, micro-sources may ...

Power flow control is one of the most important issues for operating the inverter-dominated autonomous microgrid. A technical challenge is how to achieve the accurate active/reactive power sharing of inverters. P-F and Q-V droop control schemes have been widely used for power sharing in the past decades. But they suffer from the poor power sharing in the presence of unequal line impedance. In o...