PROJECT TITLE:

Power Controllability of a Three-Phase Converter With an Unbalanced AC Source - 2015

ABSTRACT:

3-part dc-ac power converters suffer from power oscillation and overcurrent issues in case of the unbalanced ac source voltage that may be caused by grid/generator faults. Existing solutions to handle these problems are properly selecting and controlling the positive- and negative-sequence currents. During this paper, a brand new series of management strategies that utilize the zero-sequence elements are proposed to boost the facility management ability beneath this adverse condition. It's concluded that by introducing proper zero-sequence current controls and corresponding circuit configurations, the ability converter can enable a lot of flexible management targets, achieving better performances in the delivered power and the load current when laid low with the unbalanced ac voltage.