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Passivity based Stability Assessment for Four types of Droops for DC Microgrids
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Passivity based Stability Assessment for Four types of Droops for DC Microgrids
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Passivity based Stability Assessment for Four types of Droops for DC Microgrids
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Paper
Passivity based Stability Assessment for Four types of Droops for DC Microgrids
2024
Overview
DC microgrids are getting more and more applications due to simple converters, only voltage control and higher efficiencies compared to conventional AC grids. Droop control is a well know decentralized control strategy for power sharing among converter interfaced sources and loads in a DC microgrid. This work compares the stability assessment and control of four types of droops for boost converters using the concept of passivity. EN standard 50388-2 for railway systems provides a reference to ensure system stability in perspectives of converters and system integration. Low pass filter (LPF) in the feedback of the droop control is used to ensure converter passivity. Bus impedance is derived to ensure system passivity with less conservativeness. Analytical approach for design of passive controller for all four types of droops is verified through time domain simulations of a single boost converter based microgrid feeding a Constant Power Load (CPL).
Publisher
Cornell University Library, arXiv.org
