Active　power　filters　(APFs)　with　repetitive　control　(RC)　could　compensate　for　the　harmonics.　However,　there　are　some　problems　in　IGBT-380V-APFs　with　RC,　such　as　the　adaptability　of　grid　frequency　varying　because　of　the　noninteger　value　of　RC　parameters.　SiC-mosfets　that　could　reach　high　switching　frequency　provide　a　new　way　to　increase　the　compensation　accuracy　and　the　frequency　adaptability　for　380V/APFs.　In　this　article,　a　novel　frequency　adaptive　fast　repetitive　control　(FAFRC)　for　APF　with　SiC-mosfet　inverter　to　achieve　optimal　performance　in　variable　frequency　girds　through　changing　RC　order　N　was　proposed.　Taking　the　advantage　of　the　high　switching　and　sampling　frequency　of　SiC-APF,　the　control　method　proposed　could　compensate　for　the　harmonics　more　accurately　with　an　integer　RC　order　N.　The　control　method　with　50　kHz　switching　and　the　sampling　frequency　is　described,　designed,　and　verified　experimentally　in　a　two-level　380V/75A　APF　prototype　made　up　of　SiC-mosfets,　which　volume　is　37L　that　66%　of　IGBT-APFs.　The　results　obtained　that　380V/75A-SiC-APFs　with　the　control　method　proposed　have　a　high　compensation　accuracy　(THD＜5%)　with　the　grid　frequency　variations.