Under　typhoon　attack,　slender　and　lightly　damped　offshore　wind　turbine　systems　are　prone　to　significantly　exacerbated　aeroelastic　dynamic　responses　and　increased　structural　instability　risks,　potentially　leading　to　damage　or　collapse.　To　address　the　complex　vibration　challenges　in　multi-mode　and　multi-directional　systems,　this　paper　proposes　a　dual-track　nonlinear　energy　sink　(NES)　and　establishes　a　theoretical　model　for　the　wind　turbine　tower　system　coupled　with　the　dual-track　NES,　incorporating　blade　rotation　and　vortex　shedding　effects.　A　comprehensive　optimization　of　the　dual-track　NES　is　conducted　to　determine　the　optimal　track　profiles　and　damping　ratios.　An　aeroelastically　scaled　model　of　the　wind　turbine　tower　system　is　designed　and　tested　in　typhoon　fields　simulated　in　wind　tunnels.　The　effectiveness　of　the　dual-track　NES　is　evaluated　under　various　conditions　by　analyzing　acceleration　time-history　responses,　displacement　trajectories,　frequency,　and　damping　ratios.　Experimental　results　demonstrate　that　the　dual-track　NES　can　effectively　suppress　the　tower＇s　response　in　both　alongwind　and　crosswind　directions,　with　the　displacement　trajectory　significantly　narrowed,　eigenvalues　of　displacement　power　spectral　density　reduced　in　orders,　and　damping　ratio　increased　up　to　five　times.　Notably,　under　resonance　conditions,　the　acceleration　response　is　reduced　by　up　to　97.1%,　while　in　non-resonance　conditions,　the　reduction　can　reach　up　to　79.4%.　This　innovative　approach　provides　a　promising　solution　for　mitigating　typhoon-induced　multimodal　resonances　and　avoiding　dynamic　instabilities　in　offshore　wind　turbine　systems.