Performance Comparison of Large-Scale Design-Optimized Non-Overlap and Overlap Winding Wound Rotor Synchronous Generators

The use of non-overlap windings rather than overlap windings is a topic for debate. Non-overlap windings are generally cheaper and easier to manufacture but result in a high amount of magnetomotive force sub- and higher-order harmonics. A strategy to reduce these harmonics has been previously publis...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2023-01, Vol.59 (1), p.759-766
Main Authors: Garner, Karen S., Kamper, Maarten J.
Format: Article
Language:English
Subjects:
Coils (windings)
Design optimisation
Design optimization
electric machines
finite element analysis
generators
Harmonic analysis
Higher harmonics
Optimization
rotating machines
Rotors
Stator windings
Stators
Synchronous machines
Torque
wind energy generation
Winding
Windings
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Summary:The use of non-overlap windings rather than overlap windings is a topic for debate. Non-overlap windings are generally cheaper and easier to manufacture but result in a high amount of magnetomotive force sub- and higher-order harmonics. A strategy to reduce these harmonics has been previously published and this study aims to provide a performance comparison of a large-scale wound rotor synchronous generator with a modified non-overlap winding and a classical overlap winding. Hence, design optimisations of a 16/18 and 16/72 pole/slot grid-connected 3 MW wound rotor synchronous generator for medium-speed wind generation are conducted. The optimisations are performed using the modified method of feasible direction gradient-based optimisation because of its simplicity and fast results. Optimal solutions for the 16/18 and 16/72 3 MW models are obtained and the performance of the solutions compared. The results show that the 3 MW 16/18 model performs favourably against the 3 MW 16/72 model, especially regarding the lower active mass.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2022.3209618