Analysis and Mitigation of Subsystem Interactions in Low Voltage Off Grid DC Systems

Abstract

newlineThe conventional source-fed ac grid leads to environmental pollution and depletion in newlinethe conventional sources. Along with these consequences, factors such as (i) change newlinein nature of loads from ac to dc, (ii) critical nature of load demanding uninterrupted newlinepower supply, (iii) encouraging carbon-neutral environment, (iv) reduce the burden newlineon the conventional grid, and (v) supplying power to un-electrified areas has led to newlinethe emergence of low voltage low power off-grid dc systems (LVPDS). An LVPDS is newlineformed by interconnecting multiple power electronics dc-dc converters for its prominent newlineperformance, low maintenance requirement, low development, and installation cost. newlineWhen these converters are interfaced with each other, they exhibit complexities in the newlinesteady-state and dynamic performance of the overall LVPDS due to a phenomenon newlinecalled subsystem interaction. In this thesis, the performance analysis and improvement newlineof LVPDS are addressed, when subsystem interactions occur due to multiple converters being interconnected and coherently operating