Finite Element Analysis of Switched Reluctance Generator under Fault Condition Oriented Towards Diagnosis of Eccentricity Fault
Keywords:
Finite Element Analysis of Switched Reluctance Generator under Fault Condition Oriented Towards Diagnosis of Eccentricity FaultAbstract
In this paper, a novel two phase double layer switched reluctance generator (DLSRG) under static eccentricity fault is introduced and analyzed. The proposed generator consists of two magnetically independent stator and rotor layers. There is a stationary reel, which has the field coils wrapped around it and is placed between the twostator sets. This paper then continues with modeling this generator in the field assisted mode for healthy condition as well as motor with static rotor eccentricity utilizing three-dimensional finite element analysis (3-D FEA). The results of the numerical analysis for a (4/2)×2 DLSRG including flux linkages, mutual inductances per phase in each layer and radial force for various eccentric generator conditions by considering the end effects and axial fringing fields for simulating reliable model are obtained and compared. Consequently, Fourier analysis is carried out to study the variations of mutual inductance as a diagnosis index. The obtained results present useful information as good candidates for fault indicators as well as the amount of eccentricity fault and the direction of fault occurrence.
Downloads
References
Y. Chang, and C. Liaw, “On the Design of
Power Circuit and Control Scheme for
Switched Reluctance Generator,” IEEE
Transactions on Power Electronics, vol. 23,
no. 1, pp. 445-454, 2008.
E. Afjei, and H. Torkaman, “Comparison of
Two Types of Dual Layer Generator in Field
Assisted Mode Utilizing 3-D-FEM and
Experimental Verification,” Progress in Electromagnetics Research B, vol. 23, pp.
-309, 2010.
D. Torrey, “Switched Reluctance Generators
and Their Control,” IEEE Transaction on
Industrial Electronic, vol. 49, no. 1, pp. 3-14,
D. McSwiggan, L. Xu, and T. Littler,
“Modelling and Control of a Variable Speed
Switched Reluctance Generator based Wind
Turbine,” in 42nd International Universities
Power Engineering Conference, pp. 459-463,
L. Moreau, M. Machmoum, and M. E. Zaïm,
“Design of Low-Speed Slotted Switched
Reluctance Machine for Wind Energy
Applications,” Electric Power Components
and Systems, Taylor and Francis, vol. 34, no.
, pp. 1139-1156, 2006.
A. Martinez, and et al ., “Use of an AC Self-
Excited Switched Reluctance Generator as a
Battery Charger,” in 13th Power Electronics
and Motion Control Conference, pp. 845–
, 2008.
H. Torkaman and E. Afjei, “Magnetio Static
Field Analysis Regarding the Effects of
Dynamic Eccentricity in Switched Reluctance
Motor,” Progress in Electromagnetics
Research M, PIER, vol. 8, pp. 163-180, 2009.
H. Torkaman and E. Afjei, “Hybrid Method
of Obtaining Degrees of Freedom for Radial
Air Gap Length in SRM under Normal and
Faulty Conditions Based on Magnetiostatic
Model,” Progress In Electromagnetics
Research, PIER, vol. 100, pp. 37-54, 2010.
N. K. Sheth and K. R. Rajagopal, “Effects of
Nonuniform Air Gap on the Torque
Characteristics of a Switched Reluctance
Motor,” IEEE Transactions on Magnetics,
vol. 40, no. 4, pp. 2032-2034, 2004.
N. K. Sheth and K. R. Rajagopal, “Variations
in Overall Developed Torque of a Switched
Reluctance Motor with Air Gap
Nonuniformity,” IEEE Transactions on
Magnetics, vol. 41, no. 10, pp. 3973-3975,
D. G. Dorrell, I. Chindurza, and C. Cossar,
“Effects of Rotor Eccentricity on Torque in
Switched Reluctance Machines,” IEEE
Transactions on Magnetics, vol. 41, no. 10,
pp. 3961-3963, 2005.
I. Husain, A. Radun, and J. Nairus,
“Unbalanced Force Calculation in Switched-
Reluctance Machines,” IEEE Transactions on
Magnetics, vol. 36, no. 1, pp. 330-338, 2000.
J. R. Briso-Montiano, R. Karrelmeyer, and E.
Dilger, “Simulation of Faults by Means of
Finite Element Analysis in a Switched
Reluctance Motor,” in Multiphysics
Conference, pp. 1-6, Frankfurt, 2005.
E. Afjei and H. Torkaman, “The Novel Two
Phase Field-Assisted Hybrid SRG: Magnetio
Static Field Analysis, Simulation, and
Experimental Confirmation,” Progress in
Electromagnetics Research B, PIER, vol. 18,
pp. 25-42, 2009.
E. Afjei and H. Torkaman, “Comparison of
Two Types of Hybrid Motor/Generator,” in
th International Symposium on Power
Electronics, Electrical Drives, Automation
and Motion (SPEEDAM), pp. 982-986, Pisa,
Italy, 2010.
H. Torkaman and E. Afjei, “Comprehensive
Study of 2-D and 3-D Finite Element
Analysis of a Switched Reluctance Motor,”
Journal of Applied Sciences, vol. 8, no. 15,
pp. 2758-2763, 2008.
H. Torkaman and E. Afjei, “Comprehensive
Magnetic Field-Based Study on Effects of
Static Rotor Eccentricity in Switched
Reluctance Motor Parameters Utilizing
Three-Dimensional Finite Element,”
Electromagnetics, Taylor and Francis, vol.
, no. 5, pp. 421 - 433, 2009.
E. Afjei and H. Torkaman, “Air Gap
Eccentricity Fault Diagnosis in Switched
Reluctance Motor,” in 1st Power Electronic
and Drive Systems and Technologies
Conference, PEDSTC, Tehran, Iran, 2010, pp.
-289.
R. Perers, U. Lundin, and M. Leijon,
“Saturation Effects on Unbalanced Magnetic
Pull in a Hydroelectric Generator With an
Eccentric Rotor,” IEEE Transactions on
Magnetics, vol. 43, no. 10, pp. 3884-3890,
[ 20] S. Keller, M. T. Xuan, J.-J. Simond, and A.
Schwery, “Large Low-Speed Hydro-
Generators Unbalanced Magnetic Pulls and
Additional Damper Losses in Eccentricity
Conditions,” IET Electric Power Applications, vol. 1, no. 5, pp. 657 - 664,
C. Bruzzese, E. Santini, V. Benucci, et al. ,
“Model-Based Eccentricity Diagnosis for a
Ship Brushless-Generator Exploiting the
Machine Voltage Signature Analysis,” in
IEEE International Symposium on
Diagnostics for Electric Machines, Power
Electronics and Drives, pp. 1-7, 2009.
