TY - GEN
T1 - Analysis of stray loss and its determination with equivalent circuit for double cage rotor induction motor
AU - Ansari, Mohammed Nasir
AU - Dalal, Ankit
AU - Kumar, Praveen
PY - 2013
Y1 - 2013
N2 - For accurate determination of induction motor (IM) efficiency, precise knowledge of motor losses are required to be known. Stray loss constitute a part of the total loss and hence its detailed analysis and accurate determination is required. Classical IM theory and its equivalent circuit do not consider stray loss in it, resulting in inaccurate performance evaluation. In this work, analysis of the stray losses and its determination using proposed equivalent circuit is done. Finite element method (FEM) is used for core loss analysis and to obtain the stray losses for an inverter fed double cage rotor IM. Stray loss in IM due to loading, presence of harmonics frequency voltage, and slot harmonics is determined by observing core loss increase using FEM. Core material with known core loss data at different frequencies is used. FEM facilitates precise core loss calculation due to the availability of accurate magnetic field density distribution on loading, presence of harmonics frequency voltage and slot harmonics. Individual equivalent resistance each representing stray load loss and stray harmonics loss is determined. A complete equivalent circuit of double cage rotor IM considering the stray loss is then proposed, and its parameters are also determined. This work is applicable for all rotor types in IM. Different components of stray loss with varying load condition is calculated from the proposed equivalent circuit and are compared with those obtained from FEM to validate the results.
AB - For accurate determination of induction motor (IM) efficiency, precise knowledge of motor losses are required to be known. Stray loss constitute a part of the total loss and hence its detailed analysis and accurate determination is required. Classical IM theory and its equivalent circuit do not consider stray loss in it, resulting in inaccurate performance evaluation. In this work, analysis of the stray losses and its determination using proposed equivalent circuit is done. Finite element method (FEM) is used for core loss analysis and to obtain the stray losses for an inverter fed double cage rotor IM. Stray loss in IM due to loading, presence of harmonics frequency voltage, and slot harmonics is determined by observing core loss increase using FEM. Core material with known core loss data at different frequencies is used. FEM facilitates precise core loss calculation due to the availability of accurate magnetic field density distribution on loading, presence of harmonics frequency voltage and slot harmonics. Individual equivalent resistance each representing stray load loss and stray harmonics loss is determined. A complete equivalent circuit of double cage rotor IM considering the stray loss is then proposed, and its parameters are also determined. This work is applicable for all rotor types in IM. Different components of stray loss with varying load condition is calculated from the proposed equivalent circuit and are compared with those obtained from FEM to validate the results.
KW - Induction motors
KW - core loss
KW - double cage rotor
KW - equivalent circuit
KW - finite element method
KW - harmonics
KW - inverter
KW - stray loss
UR - http://www.scopus.com/inward/record.url?scp=84894437773&partnerID=8YFLogxK
U2 - 10.1109/INDCON.2013.6726050
DO - 10.1109/INDCON.2013.6726050
M3 - Conference contribution
AN - SCOPUS:84894437773
SN - 9781479922758
T3 - 2013 Annual IEEE India Conference, INDICON 2013
BT - 2013 Annual IEEE India Conference, INDICON 2013
T2 - 10th Annual Conference of the IEEE India Council, INDICON 2013
Y2 - 13 December 2013 through 15 December 2013
ER -