Results 21 to 30 of about 3,149,182 (297)

A change-detection algorithm for short-circuit fault detection in closed-loop AC drives [PDF]

open access: yes, 2013
This paper deals with an on-line method for turn-to-turn short-circuit fault detection in low-voltage permanent-magnet synchronous machine drives. Due to the closed-loop control, the fault effects are reflected in the voltage.
Johan Gyselinck   +10 more
core   +1 more source

A Fault Detection Toolbox for MATLAB [PDF]

open access: yes, 2006
The recently developed FAULT DETECTION Toolbox for MATLAB is described. The new toolbox provides a comprehensive set of high level m-functions to support the design of residual generation filters using reliable numerical algorithms recently developed by ...
A. Varga, Varga, Andreas
core   +1 more source

Railway Insulator Detection Based on Adaptive Cascaded Convolutional Neural Network

open access: yesIEEE Access, 2021
Insulator failure is one of the important causes of railway power transmission accidents. In the automatic detection system of railway insulators, the detection and classification of insulator faults is a challenging task due to the complex background ...
Zaixing Wang   +5 more
doaj   +1 more source

Container cascade fault detection based on spatial–temporal correlation in cloud environment

open access: yesJournal of Cloud Computing: Advances, Systems and Applications, 2023
Containers are light, numerous, and interdependent, which are prone to cascading fault, increasing the probability of fault and the difficulty of detection.
Ningjiang Chen   +5 more
doaj   +1 more source

Novel Instantaneous Wavelet Bicoherence for Vibration Fault Detection in Gear Systems

open access: yesEnergies, 2021
Higher order spectra exhibit a powerful detection capability of low-energy fault-related signal components, buried in background random noise. This paper investigates the powerful nonlinear non-stationary instantaneous wavelet bicoherence for local gear ...
Len Gelman   +2 more
doaj   +1 more source

Redundant ADS and INS High Sensitivity Fault Detection Method

open access: yesXibei Gongye Daxue Xuebao, 2020
The fault detection function of GLT method is approximately proportional to the square of fault value, the value of the fault detection function is lower than the detection threshold when the soft fault is small, which leads to the low sensitivity of ...

doaj   +1 more source

A Hilbert–Huang Transform-Based Adaptive Fault Detection and Classification Method for Microgrids

open access: yesEnergies, 2021
Fault detection in microgrids is of great significance for power systems’ safety and stability. Due to the high penetration of distributed generations, fault characteristics become different from those of traditional fault detection.
Yijin Li   +4 more
doaj   +1 more source

The nullspace method - a unifying paradigm to fault detection [PDF]

open access: yes, 2009
The nullspace method is a powerful framework to solve the synthesis problem of fault detection filters in the most general setting. It is also well suited to address the least order synthesis problem. In the same time, the nullspace method represents
A. Varga, Varga, Andreas
core   +1 more source

Estimation of inertia demand in power systems considering wind power virtual inertia

open access: yesInternational Journal of Electrical Power & Energy Systems
The high proportion of renewable energy integrated into the grid through numerous power electronic devices has reduced the overall system inertia level and operational stability and caused poor disturbance resistance.
Hongchun SHU   +5 more
doaj   +1 more source

Lightweight Fault Detection Strategy for Wireless Sensor Networks Based on Trend Correlation

open access: yesIEEE Access, 2021
In this work, we propose a fault detection strategy for wireless sensor networks (WSNs) called Trend Correlation based Fault Detection strategy (TCFD).
Xiuwen Fu   +4 more
doaj   +1 more source

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