A Novel Technique for Rotor Bar Failure Detection in Single-Cage Induction Motor Using FEM and MATLAB/SIMULINK

Table 1

Characteristics of the studied induction motor.

3-phase squirrel cage induction motor
Rated power	5.5 KW
Supply frequency	60 HZ
Synchronous speed	1800 rpm
Line supply voltage	460 V
Power factor	0.87
Efficiency	0.83
Winding connection	WYE
Number of rotor slots	26
Number of stator slots	36
Outer diameter of stator	190 mm
Inner diameter of stator	111.4 mm
Length of stator core	131.24 mm
Stacking factor of stator core	0.92
Type of steel (stator and rotor)	M19–24G
Number of conductors per slot	30
Wire wrap thickness	0.107 mm
Coil pitch	9
Wire diameter	1.15 mm
Net slot area	149.251 mm^2
Stator current density	9.27963 A/mm^2
Wire resistivity	0.0217 Ohm·mm^2/m
Air gap	0.175 mm
Inner diameter of rotor	36 mm
Length of rotor	131.24 mm
Stacking factor of rotor core	0.92
Skew width	0.9949
Height of end ring	21.4093 mm
Width of end ring	11.4465 mm
Rotor bar current density	4.19715 A/mm^2
Rotor ring current density	2.94869 A/mm^2
Resistivity of rotor bar (at 75°C)	0.0434783 Ohm·mm^2/m
Resistivity of rotor ring (at 75°C)	0.0434783 Ohm·mm^2/m
Skew width	0.9949
Type of rotor bar	Cast aluminium
Insulation class	F
Temperature rise	Class B
Protection degree	IP55-IC411
Stator resistance	1.82583 ohm
Stator leakage inductance	0.00738598 H
Rotor resistance referred to the stator	1.25591 ohm
Rotor leakage inductance referred to the stator	0.00705748 H
Magnetizing inductance	0.1972858 H
Inertia	0.15
Friction factor	0.002