The parameters selection methodology for Permanent Magnet Synchronous Machine under uncontrolled generator operation mode

The Permanent Magnet Synchronous Machine (PMSM) operation as a generator in combination with three-phase bridge uncontrolled rectifiers should be properly understood and accounted for in the machine design to meet requirements of generated power and voltage regulation, meanwhile to avoid damage to either the machine or converter. The analysis formulas are derived in this paper to find the relation between the key parameters including permanent flux linkage and inductance within a specified load and speed range in consideration of stipulated restrictions. The selection methodology is deduced based on non-silent pole PMSM and expanded to silent pole PMSM by numerical calculation. Theoretical results will be compared with the experiments on the prototype machine.