DC injection and even harmonics control system

摘要: A control system is provided for positioning between a power source, such as distributed generator, and utility or grid to the injection of dc current even harmonics into grid. In one embodiment, particularly suited grid-tied operation includes converter acting an ac source by converting received from transmittal utility. The further voltage transformer connection block isolate feedback loop included in measure, with pair transformers, flowing (power side) out (utility transformer. signal combiner used combine outputs two transformers that its output harmonic analyzer represents load determines magnitude phase second this transmits controller loop. creates it reference device connected to, integrated with, which having offset functions substantially zero linearized magnitude. eliminate turn effectively limits amplitude supplied