Influence of Rotor Eccentricity on Large Synchronous Generator
Authors: Amrit Chapagain, Bishal Silwal
Abstract—Improper installation, manufacturing flaws, and degradation of the machine over time can result in rotor eccentricity. Eccentricity in synchronous generators has detrimental effects on their performance, reduced output voltage, increased noise and vibration, increased losses, and potential overheating. These effects are the outcome of uneven magnetic forces which results in mechanical and electrical damage to the machine and raise maintenance costs. This study analyses the influence of eccentricity on a synchronous generator when the rotor has static eccentricity. The impact is studied by comparing the performance of an eccentric synchronous machine to that of a healthy machine. For this purpose, two-dimensional finite element (FEM) simulations were done using ANSYS Maxwell software. This paper discussed the results for electromagnetic forces, flux density distributions, circuit currents, and unbalanced magnetic pull as a result of static eccentricity.
Keywords—salient-pole synchronous generator, windings, finite element method, force, static eccentricity, ANSYS
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Published In: International Conference on Role of Energy for Sustainable Social Development (RESSD-2023)
Date of Conference: 14th-15th May 2023
Conference Location: Kathmandu, Nepal
Publisher: IEEE Power and Energy Society Nepal Chapter
Cite the paper as:
A. Chapagain, B. Silwal, “Influence of Rotor Eccentricity on Large Synchronous Generator”, International Conference on Role of Energy for Sustainable Social Development, 14th-15th May 2023, Kathmandu, Nepal