Concentrated winding IPM synchronous motor design for wide field weakening applications

A series of 12-slot 8-pole concentrated winding IPM synchronous motors (IPMSMs) are analyzed to understand the impact that certain design changes may have on performance over a wide speed range. Basic theory of operation is used to describe desirable characteristics; investigations are carried out to show how these characteristics may be realized through rotor design changes. Simulations are conducted using finite element analysis, leading to a final prototype design. The prototype is constructed and preliminary test results are presented.