2016 XXII International Conference on Electrical Machines (ICEM) 2016
DOI: 10.1109/icelmach.2016.7732753
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Experimental investigation of the voltage distribution in form wound windings of large AC machines due to fast transients

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Cited by 41 publications
(11 citation statements)
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“…The uneven voltage distribution process occurring in electrical machines has been investigated for both formwound [13], [14] and random-wound windings [15], [16]. While in form-wound coils the interturn voltages are not so critical due to the sequential winding location, randomwound windings can have significant effects on the parasitic parameters' values [16].…”
Section: B Methods For the Prediction Of The Voltage Distribution Wimentioning
confidence: 99%
“…The uneven voltage distribution process occurring in electrical machines has been investigated for both formwound [13], [14] and random-wound windings [15], [16]. While in form-wound coils the interturn voltages are not so critical due to the sequential winding location, randomwound windings can have significant effects on the parasitic parameters' values [16].…”
Section: B Methods For the Prediction Of The Voltage Distribution Wimentioning
confidence: 99%
“…In addition, the short rise times or, rather, their high dv/dt can trigger also an uneven voltage distribution across winding turns of the electrical machine, causing a higher turn to turn voltage stress [7]- [10]. If no precautions are taken, premature insulation failure can occur, leading to an inevitable stop of the drive [11].…”
Section: Introductionmentioning
confidence: 99%
“…This issue is made even more severe by the fact that rotor insulation material in salient pole synchronous machines is designed to cope with relatively low turn-to-turn and turn-to-ground dc voltages, usually not higher than five times the rated values [5]. Starting from the pioneer research of Blume-Boyajian [6] and Rüdenberg [7], many works have highlighted the importance of characterizing correctly the parameters of the windings in both transformers [8], [9], [10] and rotating AC machines [11], [12], [13] in order to give correct account of fast transient phenomena (e.g. atmospheric overvoltage and fast switching) and periodic or pseudo-periodic voltage surges (e.g.…”
Section: Introductionmentioning
confidence: 99%
“…- [8], [9], [11] make use of Multi Transmission Line Models (MTLM), whereas [12], [13], [14] prefer lumped-circuit models (LCM); - [10] takes into account the modal dispersion of the travelling wave due to the frequency-dependent speed of propagation; - [9], [11], [13] consider the inter-turn mutual inductance, while [8], [12], [14] do not; - [13] deduces both inductance and capacitance matrixes from FEM 2D simulations, whereas [9], [11], [12] derive the L matrix from the calculated C matrix after having postulated Transverse Electromagnetic (TEM) propagation of the travelling waves.…”
Section: Introductionmentioning
confidence: 99%
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