Design and finite element analysis on a novel PMSM with anti-rotation dual rotor

A novel PMSM with Anti-rotation Dual rotor is proposed in order to improve operation performance of underwater vehicle anti-rotation propulsion system. It can be substantially simplify system structure, decrease volume, reduce mass and cost, moreover, improve reliability without brush and slip-ring. After the principles of operation, configurations, and features are discussed, design methodology is given. Both the equivalent magnetic circuit method and Finite Element Analysis are adopted to analyse the electromagnetic coupling of the machine. The Finite Element Analysis indicates that in good agreement with the equivalent magnetic circuit method, which verifies the feasibility of the proposed.