Failure Diagnosis for Demagnetization in Interior Permanent Magnet Synchronous Motors

Table 2

Measured flux linkage.

Motor	[Wb]
Healthy	0.2157	—
-2.5%	0.2108	0.978
-5.0%	0.2055	0.954
-7.5%	0.2002	0.930
-2.5%	0.2104	0.976
-5.0%	0.2048	0.950
-7.5%	0.1994	0.925