An online diagnostic method for rotary diode open-circuit faults in brushless exciters

Y Wu, B Cai, Q Ma - IEEE Transactions on Energy Conversion, 2018 - ieeexplore.ieee.org
A rotating diode failure is the most common electrical fault in brushless exciters. It brings a
safety hazard to the generator excitation system so that the whole unit is forced to be shut …

Online fault diagnosis for rotating rectifier in wound-rotor synchronous starter–generator based on geometric features of current trajectory

N Jiao, X Han, Z Wei, C Sun, P Liang… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Accurate and timely fault diagnosis of the rotating rectifier in wound-rotor synchronous
starter-generator (WRSSG) plays an important role in improving the reliability of the WRSSG …

Diode open-circuit fault detection in rectifier bridge of the brushless synchronous generator

M Rahnama, A Vahedi, AM Alikhani… - 2018 XIII International …, 2018 - ieeexplore.ieee.org
The most electrical energy in the world is produced by synchronous generators. Therefore, it
has always been important to condition monitor the power generators. One of key parts of …

Time–frequency characteristics analysis and diagnosis of rotating rectifier faults in multiphase annular brushless system

J Chen, L Hao, H Li, L Zhang - IEEE Transactions on Industrial …, 2022 - ieeexplore.ieee.org
The excitation system with a multiphase annular brushless exciter (MPABE) is widely used
in large-capacity nuclear power plants. However, in field operations, the rotating rectifier of …

Generator rotating rectifier fault detection method based on stacked auto-encoder

J Cui, J Tang, G Shi, Z Zhang - 2017 IEEE Workshop on …, 2017 - ieeexplore.ieee.org
This paper presents a method of fault features extraction based on the stacked auto-encoder
(SAE), and this method can be used to rotating rectifier diodes open-circuit fault detection of …

核电多相角形无刷励磁系统旋转二极管开路故障特征分析

郝亮亮, 李佳慧, 李洪学, 李文武, 何鹏… - 电力系统自动化, 2019 - epjournal.csee.org.cn
多相无刷励磁系统是大容量核电机组的首选励磁方式, 其整流二极管处于高速旋转状态,
在实际运行中二极管故障时有发生, 对二极管故障特征的准确把握是实现对其可靠灵敏保护的 …

Research on an online diagnosis for<? show [AQ ID= Q1]?> rotating diode faults in three‐phase brushless exciter with two coils

W Yucai, C Bochong, M Qianqian - IET Electric Power …, 2019 - Wiley Online Library
The rotating rectifier is prone to be damaged in the exciter of the brushless excitation system,
wherein a diode open‐circuit fault which is common can affect the normal and safe …

Rotary diode failure detection in brushless exciter system of power plant synchronous generator

M Rahnama, A Vahedi - 2016 6th Conference on Thermal …, 2016 - ieeexplore.ieee.org
Reliability and availability of synchronous generator in power plant is related to performance
of exciter system that is coupled mechanically and electrically to synchronous generator …

Analysis and Monitoring of the Fuse Conditions in Nuclear Power Multiphase Brushless Excitation System

Y Cai, L Hao, J Chen, X Duan, G Xiong… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
In multiphase brushless excitation systems of nuclear power plants, each phase of the
rotating rectifier is equipped with two parallel fuses to protect the rotating diode from …

Condition Monitoring of Rotating Diodes in Synchronous Machines through the Exciter Stray Flux Analysis

P Tian, JM Guerrero, CA Platero, SB Lee… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Brushless excitation systems have many advantages mainly related to the low maintenance.
A failure in the rotating diodes leads to an increase in the exciter field current and an …