KHAN, MOHAMMAD SAMEER. Analysis of Flyback-PV Inverter to Enable Low Voltage Ride-Through (LVRT) Operation During Grid Fault. (Under the direction of Dr. Subhashish Bhattacharya). Flyback based PV micro-inverter is a very popular low-cost solution for integrating the photovoltaic (PV) module to an AC grid. As the penetration level of these inverters in the grid is increasing, it may cause probl...

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 ...

abstract: in this paper a control scheme for grid-connected operation mode and the island state of distributed generation is presented. in normal conditions, every inverter dg system in micro-grids to supply a preset power, normally operate in a constant current control mode. when micro-grids removed from the network, dg inverter of each system must recognize the island and change position to v...

a critical protection requirement for grid connected distributed generators (dg) is anti-islanding protection. in this paper, a new islanding detection method for any possible network loading is proposed based on utilizing and combining various system parameter indices. in order to secure the detection of islanding, eight intentional disturbances are imposed to the system under study in which t...

This article presents a Harmony Search Algorithm to solve the unit commitment (UC) problem. A micro grid includes various types of smart distributed generators, renewable generators, storage devices and controllable load. A micro grid must satisfy its local needs and should be under the hierarchical control of management system. Due to this combination of conventional and renewable sources, the...

As energy demands around the world increase, the need for renewable energy sources, such as Micro-Grid (MG) that will not harm the environment has been increased. Micro-Grid has been extensively investigated as a promising solution to energy challenges in 21st century. The optimal generation is one of the important functions for the Micro-Grid operation. It should be noted that supplying therma...

-The objective of the present project is to develop solutions to improve energy efficiency in electric grids. The basic approach adopted in this research is based on a new concept in the Micro Grid, namely Demand/Response Optimization, which enables the implementation of the autonomous demand side energy management for a big variety of consumers, ranging from homes to buildings, factories, comm...

A micro-grid is an energy community having various Distributed Energy Resources (DERs) such as diesel engines, micro turbines, solar power, wind power, fuel cells and energy storage devices. The multi-agent architecture offers a hierarchical structure is very suitable for managing multi-individual and heterogeneous DERs in the micro-grid environment. This paper proposes a multi-agent architectu...