Influence of Dimensional Parameters on Three-Phase Short Circuit and Demagnetization in Surface-Mounted PM Machines

Demagnetization is one of the major concerns in PM machines, especially in surface-mounted PM (SPM) machines. Three-phase short circuit (3PSC) is one of critical faults that may cause demagnetization and thus 3PSC current should be reduced. Since key factors influencing 3PSC current, such as PM flux linkage, resistance and inductance, heavily depend on dimensional parameters, 3PSC current can be r...