An Adaptive Control for Dispersed Multi-Source AC/DC Microgrid Enabling Regulated Grid Power

An AC/DC microgrid for remote-area application comprising of multiple dispersed wind and solar based power generation systems is illustrated here. This work embraces two major facets associated with microgrid operation in remote areas. First of those relate to the uninterrupted load power along with seamless mode transition operations, which are largely critical in multi-source microgrids. Secondly, the relentless intermittencies in renewable power generation pose a sizable threat to the grid stability in these remote-areas where the grid is often quite weak. Therefore, to combat this issue, regulated injection of grid power, despite the renewable sources related variations, is considered a relevant requirement. With these two primary objectives in perspective, a control approach for the multi-source microgrid utilizing the modified champernowne function based adaptive filter (MCF-AF) is devised in this work. In addition to realizing the primary objectives, the MCF-AF control strategy augments the microgrid operation with enhanced features such as, (a) Enabling decentralized operation with no control interactions among individual microgrid entities, (b) Permitting hassle-free modular expansion with additional wind or solar generation systems, AC or DC loads, etc. and (c) Improving the system power quality amidst abnormal AC loads scenarios. Validation of the control strategy with the afore-described primary objectives and enhanced features is conducted through Matlab-based simulations.