The　full-bridge　convertor　is　able　to　perform　as　the　basic　electrical　circuit　elements　in　its　AC　side　with　proper　control.　Negative　inductor　which　is　not　exist　in　the　real　world　is　helpful　to　decrease　the　power　line　impedance　without　the　possibility　of　resonance　like　the　capacitor.　Three　different　active　inductor　implementation　methods　are　reviewed　and　compared,　based　on　the　features　of　the　distributed　FACTS.　The　Direct　Reactance　Synthesis　method　is　chosen　and　analyzed　in　detail,　especially　for　the　negative　inductor　case.　The　impedance　characteristics　of　virtual　negative　inductor　is　shown　and　discussed.　The　power　flow　controllability　is　verified　by　simulation　and　experiments.　©　2012　IEEE.