No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generators

Abstract For the pole shoe and damper winding centre line shifted structure that has been gradually applied in hydro‐generator in recent years, this letter selects one real integer and one fractional slot large tubular hydro‐generator as examples. Then revealed the influence trends of different shif...

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Main Authors: Zu‐ying Bian, Zhi‐ting Zhou, Zhen‐nan Fan
Format: Article
Language:English
Published: Wiley 2021-08-01
Series:Electronics Letters
Subjects:
Online Access:https://doi.org/10.1049/ell2.12227
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author Zu‐ying Bian
Zhi‐ting Zhou
Zhen‐nan Fan
author_facet Zu‐ying Bian
Zhi‐ting Zhou
Zhen‐nan Fan
author_sort Zu‐ying Bian
collection DOAJ
description Abstract For the pole shoe and damper winding centre line shifted structure that has been gradually applied in hydro‐generator in recent years, this letter selects one real integer and one fractional slot large tubular hydro‐generator as examples. Then revealed the influence trends of different shift degrees on the no‐load voltage waveform quality and the damper winding loss and heat under rated load conditions. Also, it compared these trends with those of the traditional stator skew 1 slot structure. The results show that for integer slot generator, this kind of shift structure can obtain high‐quality no‐load voltage waveform close to the traditional stator skewed 1 slot scheme, and the damper winding loss and heat is significantly smaller than the latter. For fractional slot generators, this kind of shift structure will lead to the deterioration of the no‐load voltage waveform.
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spelling doaj.art-b67324a5efe44a15a9c4a4cc9f128b542022-12-22T03:12:31ZengWileyElectronics Letters0013-51941350-911X2021-08-01571869169310.1049/ell2.12227No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generatorsZu‐ying Bian0Zhi‐ting Zhou1Zhen‐nan Fan2Key Laboratory of Fluid and Power Machinery, Ministry of Education Xihua University Chengdu ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing ChinaKey Laboratory of Fluid and Power Machinery, Ministry of Education Xihua University Chengdu ChinaAbstract For the pole shoe and damper winding centre line shifted structure that has been gradually applied in hydro‐generator in recent years, this letter selects one real integer and one fractional slot large tubular hydro‐generator as examples. Then revealed the influence trends of different shift degrees on the no‐load voltage waveform quality and the damper winding loss and heat under rated load conditions. Also, it compared these trends with those of the traditional stator skew 1 slot structure. The results show that for integer slot generator, this kind of shift structure can obtain high‐quality no‐load voltage waveform close to the traditional stator skewed 1 slot scheme, and the damper winding loss and heat is significantly smaller than the latter. For fractional slot generators, this kind of shift structure will lead to the deterioration of the no‐load voltage waveform.https://doi.org/10.1049/ell2.12227Hydroelectric power stations and plantsa.c. machinesd.c. machines
spellingShingle Zu‐ying Bian
Zhi‐ting Zhou
Zhen‐nan Fan
No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generators
Electronics Letters
Hydroelectric power stations and plants
a.c. machines
d.c. machines
title No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generators
title_full No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generators
title_fullStr No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generators
title_full_unstemmed No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generators
title_short No‐load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro‐generators
title_sort no load voltage and damper winding loss and heat analysis of the pole shoe and damper winding centre line shifted structure of tubular hydro generators
topic Hydroelectric power stations and plants
a.c. machines
d.c. machines
url https://doi.org/10.1049/ell2.12227
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