TY - GEN
T1 - Analytical method for accurate determination of nonlinear magnetization curve of induction motor
AU - Ansari, Mohammed Nasir
AU - Dalal, Ankit
AU - Kumar, Praveen
AU - Kikuchi, Minoru
AU - Yamaguchi, Kohei
AU - Iwanaga, Hideki
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/3/29
Y1 - 2016/3/29
N2 - This work proposes an analytical method for determining nonlinear magnetization curve and magnetizing inductance of an induction motor (IM) from lamination design details and core material data i.e the B-H curve. The operating point of an IM on nonlinear B-H curve varies with load on the motor. Due to the nonlinear nature of the B-H curve, the magnetizing inductance of an IM should not remain constant and vary with load variation. Generally, the magnetizing inductance is regarded as constant for all motor load conditions. Considering a constant magnetizing inductance implies violating the nonlinear nature of the B-H curve. The proposed analytical method calculates the ampere-turn (AT) required to establish air-gap flux (φ) through its path i.e. through different motor parts. For a given value of air-gap flux, flux density (B) is calculated with known motor geometry size. The magnetizing field intensity (H) for the calculated flux density is determined from the B-H curve. AT is calculated using the determined value of magnetizing field intensity and the lamination size. The total AT thus calculated gives the magnetizing current required to establish the given value of air-gap flux. Further, using winding details the flux linkage (λ) is determined. Subsequently the same is repeated for all possible values of air-gap flux to get the complete nonlinear magnetization curve. Nonlinear magnetization curve obtained from proposed analytical method is compared with that obtained experimentally as well as using finite element method, the result matches with both comparisons.
AB - This work proposes an analytical method for determining nonlinear magnetization curve and magnetizing inductance of an induction motor (IM) from lamination design details and core material data i.e the B-H curve. The operating point of an IM on nonlinear B-H curve varies with load on the motor. Due to the nonlinear nature of the B-H curve, the magnetizing inductance of an IM should not remain constant and vary with load variation. Generally, the magnetizing inductance is regarded as constant for all motor load conditions. Considering a constant magnetizing inductance implies violating the nonlinear nature of the B-H curve. The proposed analytical method calculates the ampere-turn (AT) required to establish air-gap flux (φ) through its path i.e. through different motor parts. For a given value of air-gap flux, flux density (B) is calculated with known motor geometry size. The magnetizing field intensity (H) for the calculated flux density is determined from the B-H curve. AT is calculated using the determined value of magnetizing field intensity and the lamination size. The total AT thus calculated gives the magnetizing current required to establish the given value of air-gap flux. Further, using winding details the flux linkage (λ) is determined. Subsequently the same is repeated for all possible values of air-gap flux to get the complete nonlinear magnetization curve. Nonlinear magnetization curve obtained from proposed analytical method is compared with that obtained experimentally as well as using finite element method, the result matches with both comparisons.
KW - Analytical models
KW - equivalent circuits parameters
KW - finite element analysis
KW - inductance measurement
KW - induction motor
UR - https://www.scopus.com/pages/publications/84994353665
U2 - 10.1109/INDICON.2015.7443765
DO - 10.1109/INDICON.2015.7443765
M3 - Conference contribution
AN - SCOPUS:84994353665
T3 - 12th IEEE International Conference Electronics, Energy, Environment, Communication, Computer, Control: (E3-C3), INDICON 2015
BT - 12th IEEE International Conference Electronics, Energy, Environment, Communication, Computer, Control
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th IEEE International Conference Electronics, Energy, Environment, Communication, Computer, Control, INDICON 2015
Y2 - 17 December 2015 through 20 December 2015
ER -