TY - GEN
T1 - Finite element surrogate model for electric machines with revolving field - Application to IPM motors
AU - Ionel, Dan M.
AU - Popescu, Mircea
PY - 2009
Y1 - 2009
N2 - The model allows the ultra-fast simulation of the steady-state performance of synchronous machines and is particularly suitable for brushless motors with non-overlapping windings having coils concentrated around the teeth. Finite element analysis (FEA) is employed only for calculating the magnetic vector potential in the coils. For the example IPM motors presented, as little as one magnetostatic FE solution was used for fundamental flux linkage and average torque computation. Two FE solutions were employed for core flux density waveforms and power loss estimation. A minimum of three solutions is recommended for torque ripple, back emf and induced voltage. A substantial reduction of one to two orders of magnitude was achieved for the solving time as compared with detailed time-stepping FEA. The surrogate FE model can also be tuned for increased speed, comparable with that of magnetic equivalent circuit solvers. The general applicability of the model is discussed and recommendations are provided. Successful validation was performed against detailed FEA and experiments.
AB - The model allows the ultra-fast simulation of the steady-state performance of synchronous machines and is particularly suitable for brushless motors with non-overlapping windings having coils concentrated around the teeth. Finite element analysis (FEA) is employed only for calculating the magnetic vector potential in the coils. For the example IPM motors presented, as little as one magnetostatic FE solution was used for fundamental flux linkage and average torque computation. Two FE solutions were employed for core flux density waveforms and power loss estimation. A minimum of three solutions is recommended for torque ripple, back emf and induced voltage. A substantial reduction of one to two orders of magnitude was achieved for the solving time as compared with detailed time-stepping FEA. The surrogate FE model can also be tuned for increased speed, comparable with that of magnetic equivalent circuit solvers. The general applicability of the model is discussed and recommendations are provided. Successful validation was performed against detailed FEA and experiments.
KW - AC synchronous machine
KW - Back emf
KW - Brushless (BL) permanent-magnet (PM) motor
KW - Concentrated coils
KW - Core loss
KW - Finite-element analysis (FEA)
KW - Flux density waveform
KW - IPM motor drive
KW - Iron loss
KW - Non-overlapping winding
UR - http://www.scopus.com/inward/record.url?scp=72449195158&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=72449195158&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2009.5316184
DO - 10.1109/ECCE.2009.5316184
M3 - Conference contribution
AN - SCOPUS:72449195158
SN - 9781424428939
T3 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
SP - 178
EP - 186
BT - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
T2 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
Y2 - 20 September 2009 through 24 September 2009
ER -