Nonlinear Vibration Analysis of Rotor considering Cogging and Harmonic Effects

Table 1

Comparison of unbalanced magnetic pull.

Static eccentricity	0%	10%	20%	30%	40%	50%
FEM results	0	3.34 × 10^5	6.92 × 10^5	1.15 × 10^6	1.76 × 10^6	2.65 × 10^6
Analytical results (no harmonics and stator slots)	0	3.04 × 10^5	6.40 × 10^5	1.05 × 10^6	1.60 × 10^6	2.40 × 10^6
Errors	0%	8.98%	7.51%	8.70%	9.09%	9.43%
Analytical results (with harmonics)	0	3.83 × 10^5	7.82 × 10^5	1.27 × 10^6	2.05 × 10^6	2.85 × 10^6
Errors	0%	14.67%	13.01%	10.43%	16.48%	7.55%
Analytical results (with harmonics and stator slots)	0	3.52 × 10^5	7.31 × 10^5	1.22 × 10^6	1.86 × 10^6	2.78 × 10^6
Errors	0%	5.39%	5.64%	6.09%	5.68%	4.91%