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Terminal Voltage Harmonic Analysis of Brushless Synchronous Generator for Fault Detection

Abstract : The present study aims to propose an analytical model with the purpose of spectral analysis of the terminal voltage (to the neutral point which is phase voltage) in a brushless synchronous generator for fault detection. In this type of generator which comprises one exciter as exciter and the main machine, rotating parts such as rectifier bridge, exciter armature, and their connections are more likely to defect. Therefore, considering the relevant literature, the exciter armature open-circuit fault is taken into account for the investigation. Consequently, the brushless generator model is developed for two states, including healthy and exciter armature open-phase fault under no-load condition. Then, an analytical approach is proposed for the terminal voltage harmonic analysis which is utilized for the two states. Thus, the harmonic spectrum can be achieved for these states. These harmonic components are compared for healthy and faulty states, and the major distinctive components are determined. Hence, the occurred exciter fault can be detected using these components. In order to evaluate the model and its efficiency, finite element analysis, and experimental results are utilized.
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https://hal.univ-lorraine.fr/hal-03260361
Contributor : Bernard Davat <>
Submitted on : Monday, June 14, 2021 - 7:32:34 PM
Last modification on : Thursday, June 17, 2021 - 1:57:54 PM

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  • HAL Id : hal-03260361, version 1

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Mehdi Rahnama, Abolfazl Vahedi, Arta Mohammad Alikhani, Noureddine Takorabet. Terminal Voltage Harmonic Analysis of Brushless Synchronous Generator for Fault Detection. International Conference on Electrical Machines (ICEM), Aug 2020, Gothenburg (virtual conference), Sweden. pp.1445-1451. ⟨hal-03260361⟩

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