Hybrid analytical/FEM optimization design of SPMSM for refrigerator compressor loads

On the growing market of home appliances, the choice of the right motor is very challenging. What once was the field of universal motors became a fertile territory for PMSMs, especially at medium to high speeds. In this paper, a case study design (150W, 15000 rpm, 6/4 PMSM) illustrates the comparison of two hybrid analytical/ FEM optimal design methods, modified Hooke-Jeeves and Artificial Bee Colony (ABC), in terms of performance and computational effort. The problem of cogging torque reduction is discussed and analyzed via FEM, to ensure a minimum impact on design requirements and on manufacturing costs.