According　to　the　demand　of　transmitter　for　deep　exploration,　this　paper　presents　a　strategy　of　current　double　closed　loop　control　based　on　fractional　order　PI　lambda　controller,　which　used　to　improve　the　tracing　performance　and　anti-interference　capability　of　the　current　regulating　loop,　also　the　stability　of　load　current.　And　also　presents　a　modified　GA-PSO　algorithm　to　get　the　parameters　of　fractional　order　PI　lambda　controller.　Results　show　that　modified　GA-PSO　algorithm　has　faster　convergence　speed　and　higher　accuracy,　new　control　strategy　using　in　three-phase　PWM　voltage　rectifier　has　remarkably　improved　the　stability　and　anti-interference　capability　of　system.