TY - GEN
T1 - Optimization of IM Rotor Bars Inclination Angle using Analytical Model in Free FEA Software
AU - To, Thanh Tung
AU - Roshandel, Emad
AU - Mahmoudi, Amin
AU - Cao, Zhi
AU - Kahourzade, Solmaz
PY - 2021
Y1 - 2021
N2 - The performance of the induction motors (IMs) in transient and steady-state operation can be adjusted by inclination of the rotor bars to some extent. This paper proposes an augmented analytical approach using free finite-element analysis software to study the effect of the inclination angle on the performance of IMs. The electric equivalent circuit (EEC) parameters, except the rotor leakage inductance, are found from the existing sizing equations. A such, the paper offers new equation for estimation of the rotor side leakage inductance. The magnetostatic analysis is employed using free FEMM Software to find the saturation level of the studied IMs. The calculation of the saturation level is used to estimate the rotor side and magnetization inductance with higher accuracy. The proposed model accuracy is validated against FEA. An optimization problem is defined to maximize the efficiency, starting torque, and rated torque with a certain weighting. The optimum inclination angle is determined using the developed augmented analytical model (AAM). The performance of the optimal design for two different classes of the IMs (i.e., Class A and Class B) are compared against the IMs with zero-inclination rotor bar angle. The results show the effectiveness of the calculation of optimal inclination angle for the IMs.
AB - The performance of the induction motors (IMs) in transient and steady-state operation can be adjusted by inclination of the rotor bars to some extent. This paper proposes an augmented analytical approach using free finite-element analysis software to study the effect of the inclination angle on the performance of IMs. The electric equivalent circuit (EEC) parameters, except the rotor leakage inductance, are found from the existing sizing equations. A such, the paper offers new equation for estimation of the rotor side leakage inductance. The magnetostatic analysis is employed using free FEMM Software to find the saturation level of the studied IMs. The calculation of the saturation level is used to estimate the rotor side and magnetization inductance with higher accuracy. The proposed model accuracy is validated against FEA. An optimization problem is defined to maximize the efficiency, starting torque, and rated torque with a certain weighting. The optimum inclination angle is determined using the developed augmented analytical model (AAM). The performance of the optimal design for two different classes of the IMs (i.e., Class A and Class B) are compared against the IMs with zero-inclination rotor bar angle. The results show the effectiveness of the calculation of optimal inclination angle for the IMs.
KW - Analytical model
KW - finite-element analysis
KW - induction motor design
KW - optimization design
KW - rotor bar inclination
UR - http://www.scopus.com/inward/record.url?scp=85119989261&partnerID=8YFLogxK
U2 - 10.1109/ECCE47101.2021.9595153
DO - 10.1109/ECCE47101.2021.9595153
M3 - Conference contribution
AN - SCOPUS:85119989261
T3 - 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
SP - 4119
EP - 4126
BT - 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IEEE Energy Conversion Congress and Exposition, ECCE 2021
Y2 - 10 October 2021 through 14 October 2021
ER -