In　order　to　improve　the　power　factor　and　power　density　of　electromagnetic　transmitter,　and　make　the　transmitter　small　in　size　and　light　in　weight,　a　novel　electromagnetic　transmitter　circuit　based　on　pulse　width　modulation　(PWM)　rectifier　is　presented　in　this　paper.　Parameters　for　the　permanent　synchronous　generator　(PMSG)　PWM　rectifier　in　the　transmitter　are　designed.　First,　the　mathematical　model　of　the　PMSG　PWM　rectifier　is　established,　and　then　based　on　the　flux　oriented　control　theory　in　motor　speed　control　system,　a　double　closed　loop　control　strategy,　which　consists　of　a　decoupling　current　controller　and　an　outer　voltage　controller　is　proposed.　The　active　and　reactive　current　decoupling　control　is　obtained.　To　improve　the　dynamic　performance　and　stability　of　the　PMSG　PWM　rectifier,　parameters　in　the　PI　controller　are　designed.　Simulation　and　experimental　results　show　that　the　proposed　transmitter　can　not　only　meet　the　needs　of　geophysical　exploration,　but　also　has　the　advantages　of　simple　structure,　high　power　factor　and　low　current　harmonics.　The　proposed　design　method　of　controller　can　effectively　determine　the　PI　parameters　and　simplify　control　system.　©　2018,　Shanghai　Jiao　Tong　University　Press.　All　right　reserved.