Virtual-stator Loss Model for Synchronous Generators

In synchronous generators, end region field can cause additional losses at clamping structures and stator end core. It can be a computational challenge to solve the end region field of synchronous generators with fractional-slot winding. With a minor change of the number of stator slots, three-dimen...

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Bibliographic Details
Published in2022 IEEE Energy Conversion Congress and Exposition (ECCE) pp. 1 - 7
Main Authors Zhang, Zhaoqiang, Nysveen, Arne, Fagermyr, Borge Johannes, Nilssen, Robert, Ehya, Hossein
Format Conference Proceeding
LanguageEnglish
Published IEEE 09.10.2022
Subjects
Computational modeling
Core loss
loss model
Solid modeling
Stator cores
Stator windings
synchronous generator
Three-dimensional displays
virtual stator
Windings
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Summary:In synchronous generators, end region field can cause additional losses at clamping structures and stator end core. It can be a computational challenge to solve the end region field of synchronous generators with fractional-slot winding. With a minor change of the number of stator slots, three-dimensional (3D) Virtual-stator Loss Model (VLM) can largely reduce computational burden of end region field computation. This paper investigates VLM theory and its implementation. Compared to Real-stator Loss Model, VLM demonstrates excellent accuracy when implemented with two-dimensional finite element method. This indicates that 3D VLM can be used for the accurate computation of losses induced by end region field, while the computational challenge is dramatically reduced. Lab test at a 100kVA salient pole synchronous generator proves that the analysis approach is trustful.
ISSN:2329-3748
DOI:10.1109/ECCE50734.2022.9947395