Unbalanced Magnetic Pull Effect on Stiffness Models of Active Magnetic Bearing due to Rotor Eccentricity in Brushless DC Motor Using Finite Element Method

Table 1

Designed parameters of the BDCM.

Parameters	Value
Weight of the rotor, (kg)	23.6
Number of pole pairs	2
Rated power, (kW)	100
Rated voltage, (V)	480
Maximum speed, (r/min)	32000
Number of stator slots	24
Connection	Star
Winding arrangement (series)	Double layer
Parallel branches of the stator winding	4
Rotor outer diameter, (mm)	89
Air gap length, (mm)	4
Stator inner diameter, (mm)	97
Axial length, (mm)	150