Thanigasalam Chettiyar



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Microgrids are important because of their ability to provide a greener solution to obtain reliable, secure and sustainable electricity from renewable sources of energy. The power quality issues observed in a microgrid are very different as compared to the traditional grid as a microgrid can be islanded i.e. disconnected from the main grid. These issues are of significant importance to researchers dealing with microgrids because the reliability of the grid and all the nodes (households) connected to it depends on it. Currently, the power quality issues - total harmonic content and transient coupling between real and reactive power - have been studied only for a single distributed generation (DG) unit connected to a grid. However, under practical conditions, the microgrid would have more than one DG (Ex: solar, wind, and other renewable or non-renewable generation sources) connected to it. The current proposal seeks to study the power quality issues for a microgrid consisting of multiple DGs. This area of research would contribute to achieving seamless transition between grid connected and islanded modes of microgrid operation. A Newton-Raphson based non-linear feed-forward algorithm used to regulate power flow will be evaluated on a microgrid model consisting of multiple DGs. The proposed microgrid model follows the CERTS architecture for modeling microgrids. The Lyapunov Direct method would be used to evaluate system stability. The expected results - near-zero total harmonic content and transient coupling - would increase the practical implementability of microgrids.

Publication Date


Project Designation

Graduate Research

Primary Advisor

Malcolm W. Daniels

Primary Advisor's Department

Engineering-Office of the Dean


Stander Symposium project

Non-linear regulation of power quality within a microgrid consisting of multiple distributed generators (solar, wind, etc.)