TY - GEN
T1 - Lifetime consumption and degradation analysis of the winding insulation of electrical machines
AU - Sciascera, C.
AU - Galea, M.
AU - Giangrande, P.
AU - Gerada, C.
N1 - Publisher Copyright:
© 2016, Institution of Engineering and Technology. All rights reserved.
PY - 2016
Y1 - 2016
N2 - In this paper, a novel multi-stress model which estimates the lifetime of the winding insulation relative to its duty cycle is proposed and investigated. With an adequate implementation of this model, then an electrical machine can be designed not only in terms of its performance requirements, but also considering the associated reliability and lifetime aspects. Since thermal and thermo-mechanical stresses are considered as the main ageing factors, the model is particularly suited for low voltage, low duty cycle machines. The determination of the model parameters is based on the results of accelerated thermo-mechanical ageing tests, whose procedure is thoroughly reported in the paper. The results of the accelerated ageing tests show that the effect of thermomechanical ageing is significant even for small size, random wound windings under fast temperature rise.
AB - In this paper, a novel multi-stress model which estimates the lifetime of the winding insulation relative to its duty cycle is proposed and investigated. With an adequate implementation of this model, then an electrical machine can be designed not only in terms of its performance requirements, but also considering the associated reliability and lifetime aspects. Since thermal and thermo-mechanical stresses are considered as the main ageing factors, the model is particularly suited for low voltage, low duty cycle machines. The determination of the model parameters is based on the results of accelerated thermo-mechanical ageing tests, whose procedure is thoroughly reported in the paper. The results of the accelerated ageing tests show that the effect of thermomechanical ageing is significant even for small size, random wound windings under fast temperature rise.
KW - Electrical machines
KW - Multi-stress ageing
KW - Thermo-mechanical ageing
KW - Winding insulation lifetime
UR - http://www.scopus.com/inward/record.url?scp=85009090832&partnerID=8YFLogxK
U2 - 10.1049/cp.2016.0231
DO - 10.1049/cp.2016.0231
M3 - Conference contribution
AN - SCOPUS:85009090832
SN - 9781785611889
T3 - IET Conference Publications
BT - IET Conference Publications
PB - Institution of Engineering and Technology
T2 - 8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016
Y2 - 19 April 2016 through 21 April 2016
ER -