In　recent　years,　wireless　power　transfer　(WPT)　technology　has　developed　rapidly.　However,　as　the　transmission　distance　increases,　the　system　efficiency　decreases.　The　long-distance　and　high-efficiency　WPT　system　is　the　general　trend,　which　can　be　realized　by　using　relay　coils,　but　the　cross　coupling　presented　in　the　coupling　structure　will　lead　to　unstable　system　transmission.　In　this　article,　a　reconfigurable　bipolar　coil　structure　is　proposed,　which　solves　the　above　problems　while　providing　interoperability　performance.　By　building　an　experimental　prototype,　the　final　experimental　results　indicate　that　the　proposed　coil　structure　not　only　possesses　interoperability　performance　but　also　the　voltage　fluctuation　rate　at　the　output　port　is　only　1.52%　and　0.80%,　compared　with　13.89%　for　the　conventional　bipolar　coil.　This　proves　the　absolute　advantage　of　the　proposed　coil　structure　in　eliminating　the　cross　coupling.　The　experimental　prototype　achieves　transmission　efficiencies　of　up　to　82.31%　and　77.78%　for　the　two　states　of　the　coil　structure　over　a　transmission　distance　of　200　mm.　©　1963-2012　IEEE.