Impact of Static Air-Gap Eccentricity Fault on Synchronous Generator Efficiency

Yu-Ling He, Ling Tang, Kai Sun, Wen-Hao Zhang, Xue-Wei Wu and Hai-Peng Wang
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Yu-Ling He: Hebei Key Laboratory of Electric Machinery Maintenance and Failure Prevention, Baoding 071003, China
Ling Tang: Hebei Key Laboratory of Electric Machinery Maintenance and Failure Prevention, Baoding 071003, China
Kai Sun: Hebei Key Laboratory of Electric Machinery Maintenance and Failure Prevention, Baoding 071003, China
Wen-Hao Zhang: Hebei Key Laboratory of Electric Machinery Maintenance and Failure Prevention, Baoding 071003, China
Xue-Wei Wu: Hebei Key Laboratory of Electric Machinery Maintenance and Failure Prevention, Baoding 071003, China
Hai-Peng Wang: Hebei Key Laboratory of Electric Machinery Maintenance and Failure Prevention, Baoding 071003, China

Energies, 2023, vol. 16, issue 7, 1-15

Abstract: This paper presents a precise analysis of the efficiency characteristic of the synchronous generator under both normal and SAGE conditions. In this work, various losses of the synchronous generator are computed by the qualitative theoretical model and the finite element analysis in detail. Further, the generator efficiency model is proposed according to the relationship between the output power and the loss. The presented model is verified in a 5-kW non-salient synchronous generator. The result demonstrates that the loss increases and the efficiency reduce as the SAGE intensifies.

Keywords: synchronous generator; static air-gap eccentricity; loss; efficiency; FEA (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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