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

Author:

He Yu-Ling1ORCID,Tang Ling1,Sun Kai1,Zhang Wen-Hao1,Wu Xue-Wei1,Wang Hai-Peng1

Affiliation:

1. Hebei Key Laboratory of Electric Machinery Maintenance and Failure Prevention, Baoding 071003, China

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.

Funder

National Natural Science Foundation of China

Hebei Provincial Natural Science Foundation

Chinese Fundamental Research Funds

3rd Top Youth Talent Support Program of Hebei Province

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Reference35 articles.

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2. Effect of 3D Unidirectional and Hybrid SAGE on Electromagnetic Torque Fluctuation Characteristics in Synchronous Generator;He;IEEE Access,2019

3. Analysis of Torsional Vibrations on the Resolver Under Eccentricity in PMSM Drive System;Khajueezadeh;IEEE Sens. J.,2022

4. Analysis of Orbital Eccentricity and UMP in Large Salient Pole Synchronous Machines;Echeverria;IEEE Trans. Ind. Appl.,2019

5. New Hybrid Model for Electromechanical Characteristic Analysis Under SISC in Synchronous Generators;He;IEEE Trans. Ind. Electron.,2020

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