Design and analysis of double-rotors disc-type PM motor for contra-rotating propulsion system

摘要

Contra-rotating double-rotor disc-type PM motor is suitable to directly drive contra-rotating propeller of torpedo, due to avoid yawing and spinning. In this paper, the electromagnetic design scheme for different pole numbers are compared, and design method of permanent magnet size and stator winding are searched, then the effect of magnetic isolation material used in stator is analyzed. Finally, a prototype of 10.8kW 1000r/min is designed for performance analysis to verify the validity of theoretical analysis.