{Improving the Performance of a Line Regulating Converter in a Converter-Dominated DC Microgrid System}

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Title	{Improving the Performance of a Line Regulating Converter in a Converter-Dominated DC Microgrid System}
Publication Type	Conference Paper
Year of Publication	2014
Authors	Ahmadi R, Ferdowsi M
Conference Name	Smart Grid, IEEE Transactions on
ISBN Number	1949-3053 VO - 5
Keywords	constant power load, Constant power load (CPL), control system synthesis, controller design, dc microgrid, DC microgrid system, distributed power generation, dynamic model, dynamic modeling, Impedance, Load modeling, Microgrids, power convertors, power system simulation, Power system stability, Stability analysis, Transfer functions, virtual line regulating converter, Voltage control
Abstract	This paper describes the controller design procedure for a line-regulating converter in a converter-dominated dc microgrid system. The purpose of the controller is to mitigate the effects of the constant power loads on the stability and performance of the dc microgrid system. In this work, first, the overall structure, operation, and building blocks of the dc microgrid under analysis are introduced. Next, the dynamic model of the dc microgrid and the required transfer functions for the controller design are derived. Then, two proposed controller design methods are introduced and implemented on an virtual line-regulating converter in a dc microgrid system. Finally, the controller design methods are verified experimentally using the results from a built prototype dc microgrid system.
DOI	10.1109/TSG.2014.2319267