| Abstract |
The dual three-phase permanent magnet synchronous motors (DTP-PMSMs) are suitable in aircraftelectric propulsion unit (EPU) application because of their good reliability and fault-tolerant capability.However, this fault-tolerant capability can get weakened or even eliminated in short circuit fault due tothe influence of flux coupling between the two isolated three-phase sub-systems. In this paper, amathematical model of DTP-PMSMs with different mutual inductance between the two sub-systems aredeveloped and analyzed. Based on the model, different short circuit protection methods are discussedand compared. Finally, a simulation of an EPU consisting of a DTP-PMSM, and a simplified constantspeed propeller (CSP), is implemented to verify the short circuit behaviors. |
