Abstract: The space post organize requirement state of low-speed six-stage half-symmetrical partial opening concentrated-winding PM engine connected to marine drive is investigated, all space shaft mixes connected to six-stage fragmentary space engine inside 60 spaces and 52 posts are recorded. The space post blend upgraded choice technique in view of hypothetical examination is proposed. Fundamentally, considering of expanding winding circulation variable and lessening cogging torque, a 48 openings and 44 posts six-stage partial space concentrated-winding PM engine with 20 kW evaluated power is planned. Trial comes about demonstrate that the PM engine has great exhibitions and the proposed technique connected to the plan of multi-stage partial opening concentrated-winding PM engine is doable.