design and modeling of a high-speed permanent magnet synchronous generator with a retention sleeve of rotor

In this paper, the authors present a novel approach to design a high-speed permanent magnet synchronous generator (hs-pmsg) with a retention sleeve. the importance of the retention sleeve becomes conspicuous when the rotor suffers from the radial and tangential stresses derived from a high speed say 60 krpm. with respect to the mechanical property of titanium. this material has been demonstrated that it could be a proper material for the retention sleeve. the investigations in this paper concentrated on the electromagnetic coupled with mechanical design of a 2-poles, 18-slots, 40 kw hs-pmsg which is carried out through fem analysis using jmag 17.1 and abaqus cae and optimized through the well-known taguchi optimization method. the obtained results assure the robust mechanical behaviour of the hs- pmsg at a rotational speed of about 60 krpm meanwhile the cogging torque, the joule loss, and the total weight of the optimally designed hs-pmsg were reduced 44.71, 27.87, and 2.78%, respectively compared with the initial design.