Research on Demagnetization Fault Diagnosis Method of Mine Cutting Permanent Magnet Synchronous Motor

Table 1

Simulation parameters.

Parameter	Value	Unit	Parameter	Value	Unit
Number of pole pairs	8		Rotating speed	400	r/min
Phase	3		Working frequency	26.7	Hz
Operating temperature	75	°C	Remanence	1.23	T
Permanent magnet material	NdFe35	H/m	Magnetization thickness	16.2	mm
Air gap length	3	mm	Rated torque	5	kNm
Rated current	107	A	Stator outer radius	300	mm
Rotor radius	183	mm	Air gap	1	mm