Effects of the Slot Harmonics on the Stator Current in an Induction Motor with Bearing Fault

Table 3

The average and standard deviation values of fault frequency components under three different load conditions (/Hz).

State
Fault	23.8500	85.8600	Calculated	135.9279	159.7779	627.2721	727.4079	775.1421	875.2779
			Average value	135.9384	159.6292	627.1203	727.4466	774.6935	875.4969
			Standard deviation	0.0359	0.0718	0.4097	0.7135	0.3501	0.9974
Fault	23.9655	86.2758	Calculated	136.3437	160.3092	630.5523	730.6881	779.1384	879.2742
			Average value	136.3744	160.2650	630.0769	729.7913	779.9864	880.0586
			Standard deviation	0.1626	0.3358	0.5213	0.5148	0.6060	0.8409
Fault	24.0907	86.7265	Calculated	136.7944	160.8851	634.1080	734.2438	783.4703	883.6061
			Average value	136.7648	160.7179	634.2332	734.4882	782.8474	883.2693
			Standard deviation	0.0925	0.0261	0.7259	0.4272	0.7084	0.4389