Design and Performance Investigation of 3-Slot/2-Pole High Speed Permanent Magnet Machine

High-speed rotating mechanical machinery is a developed, mature and reliable technology for many engineering applications. In high-speed permanent magnet machines, the rotor's PM not strong enough to withstand centrifugal force resulting from excessive rotational speed; thus, material must be protected by non-magnetic alloy sleeve. This paper presents novel machine with solid rotor covered titanium retaining The stress condition simplified as plane problem according strength measurement of rotors in motors. analytical formulas are presented based on polar coordinate displacement method. proposed model compared conventional having auxiliary slots stator teeth. Using finite element analysis environment, performance shows that design has reduced eddy current loss, cogging torque, iron losses. initial also optimized using deterministic optimization algorithm increases output torque 26% design.