Comparison between alternative droop control strategy, modified droop method and control algorithm technique for parallel-connected converters

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 this paper, modified as augmented virtual adaptive gains improve regulation, respectively. contrast other approaches, approach proposed paper does not require exchange information between parallel modules. Instead, it uses converters' theoretical regulation characteristics estimate set point each converter locally. resistive gain manipulates module's gain, which ensures equal sharing. eliminates tradeoff difference by implementing control, compares estimated coupling rated bus value adjusts compared values ensure constant various conditions. restoration improvements versus algorithm technique observed paper. method's effectiveness demonstrated MATLAB/Simulink simulation validated an experimental prototype.