Magnetic Field Finite Element Analysis of Generator with Rotor Inter-Turn Short-Circuit Fault

Abstract:

Rotor inter-turn short-circuit is a common fault in generator and it is a research hotspot to identify the fault at its early stage. Considering the disadvantage of circuit analytical method, this paper establishes a 2D transient finite element electromagnetic-circuit coupling model, and calculates the magnetic field at normal and fault situations through the powerful post-processing function of ANSOFT, then magnetic flux density cloud pictures and air-gap magnetic flux density curves of different operating conditions are got. Using MATLAB to analyze and deal with the air-gap flux density cures, we can get the differences of faults in different levels and different positions, which provide a basis for further study of rotor inter-turn short-circuit fault.

• Periodical: Applied Mechanics and Materials (Volume 707)
• Pages: 343-347
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.707.343
• Online since: December 2014
• Authors: Yong Gang Li, Bing Han*
• Keywords: Air-Gap Magnetic Flux Density, Electromagnetic-Circuit Coupling, Finite Element, Magnetic Field, Rotor Inter-Turn Short-Circuit

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