For　high-power　wireless　power　transfer　systems　(WPT),　current　is　often　controlled　to　increase　the　power　of　electrical　energy.　To　ensure　the　reliability　of　WPT,　the　control　system　needs　to　maintain　that　the　current　response　has　good　dynamic　performance.　Therefore,　this　article　proposes　a　current　predictive　control　based　on　duty　cycle　rapid　localization　to　improve　perfect　dynamics　on　the　topology　structure　of　cascaded　DC-DC　converters　after　the　energy　output　side.　Firstly,　precise　mathematical　model　is　established　for　the　Buck　converter,　and　the　objective　function　is　simplified　to　quickly　get　the　duty　cycle　position.　Then,　iterative　optimization　predictive　control　is　performed　within　a　small　range　of　duty　cycles.　Finally,　the　comparison　is　made　with　traditional　PI　control　algorithms.　The　results　indicate　that　MPC　strategy　can　accelerate　response　speed　and　adapt　to　complex　and　variable　working　conditions,　verifying　the　effectiveness　of　the　strategy.　©　2023　IEEE.