Results 41 to 50 of about 676 (179)

Power Converter's IGBT Multi‐State Reliability Analysis for Low Failure Rate Operation

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper proposes a multi‐state reliability analysis for IGBTs in power converters, moving beyond the conventional two‐stage model with a constant failure rate and introduces a multi‐state Markov chain model for voltage source converters under different modulation scenarios.
Qiaohan Su, Zhen Zhu, Danxian Ye, Man Chung Wong   +3 more
wiley   +1 more source

Electromigration Effects in Overcurrent PVC-Insulated Copper Wire: Failure and Deformation Impacts

Science and Technology Indonesia
Electromigration is a critical issue in materials science and electrical engineering, significantly impacting the reliability and efficiency of electrical systems. This study investigates the electromigration behavior of PVC-insulated copper wires under
Muhammad Ali Akbar, Kerista Tarigan, Syahrul Humaidi, Dadan Ramdan, Yulianta Siregar   +4 more
doaj   +1 more source

Resilient Energy and Flexibility Scheduling in Interconnected Local Energy Networks via AI‐Enabled Cyber‐Integrity Enhancement

IET Smart Grid, Volume 9, Issue 1, January/December 2026.
This paper presents an AI‐enabled framework for resilient energy and flexibility scheduling in interconnected local energy networks (ILENs). By introducing a Cyber‐Connectivity Index and employing an XGBoost‐based algorithm for real‐time data correction, the model enhances operational efficiency and data integrity under cyber threats.
Ali Yazhari Kermani, Amir Abdollahi, Mehdi Shafiee   +2 more
wiley   +1 more source

Reliability Evaluation and Thermal‐Performance Based Review of Isolated Multiport Converters for EV Application

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
The upswing in electric vehicle (EV) demand has underscored the necessity for readily available charging infrastructure, further catalyzing the need for efficient power control mechanisms. Consequently, there is a persistent demand for reliable, compact, efficient, and lightweight power converters to support this infrastructure.
Zarren Firdous, Saad Mekhilef, Marif Daula Siddique, Marizan Mubin, Ahmed Elsanabary, Deepali   +5 more
wiley   +1 more source

Structural Identifiability and Reliability Assessment of a Nonidentical Cold‐Standby System Subject to Progressive Degradation and Imperfect Switching

Journal of Applied Mathematics, Volume 2026, Issue 1, 2026.
In safety‐critical systems, the assumption of identical components often leads to an overestimation of reliability. This study develops a detailed continuous‐time Markov chain (CTMC) model for a complex three‐unit, nonidentical cold‐standby system.
Nawres R. Neamah, Alaa F. Mahdi, Layla Hindi, Hussein K. Asker, Chong Lin   +4 more
wiley   +1 more source

Reliability and Availability Analysis of a Two-Unit Cold Standby System with Imperfect Switching

Axioms
This paper presents a stochastic analysis of a two-unit cold standby system incorporating imperfect switching mechanisms. Each unit operates in one of three states: normal, partial failure, or total failure.
Nariman M. Ragheb, Emad Solouma, Abdullah A. Alahmari, Sayed Saber   +3 more
doaj   +1 more source

Markov‐Driven Reliability Improvement in Duplex and Triplex Standby Architectures With Variable Failure and Repair Rates

Journal of Computer Networks and Communications, Volume 2026, Issue 1, 2026.
To enhance the reliability of industrial wireless sensor networks (IWSNs), this study develops a state‐based continuous‐time Markov model for duplex and triplex architectures equipped with warm and cold standby backup sensors. The proposed model explicitly defines the state space, transition structure, and failure–repair dynamics for one, two, and ...
Ahmadreza Zamani, Mohammad Ali Pourmina, Ramin Shaghaghi Kandovan, Salvatore Monteleone   +3 more
wiley   +1 more source

Improving Reliability Over Time in Industrial Wireless Sensor Networks Using AI‐Driven Duplex and Triplex Markov Models With Spare Node Architectures

Journal of Sensors, Volume 2026, Issue 1, 2026.
This paper analyzes the evolution of system reliability in duplex and triplex architectures enhanced with support nodes using a continuous‐time Markov framework. While the structural topology of the systems remains unchanged, the integration of artificial intelligence (AI) dynamically adjusts failure and repair behavior through intelligent warm‐standby
Ahmadreza Zamani, Mohammad Ali Pourmina, Ramin Shaghaghi Kandovan   +2 more
wiley   +1 more source

1．3μm　InGaAsP／InP　RWG型激光器的可靠性

Guangtongxin yanjiu, 1994
通过对１．３μｍＩｎＧａＡｓＰ／ＩｎＰＲＷＧ型激光器的加速老化寿命试验，证明了此种结构激光器的可靠性，它在环境温度为５０℃、１００ｍＡＣＷ及环境温度为８０℃、１００ｍＡＣＷ的条件下加速老化，经过３２２０ｈ的实际测试共计１９３２００器件小时，在测试过程中没有一支器件失效。在这样的条件下其５０℃下的外推寿命ＭＴＴＦ为２０万ｈ，其统计标准偏差为σ＝１．０１６；８０℃下的外推寿命ＭＴＴＦ为３．８万ｈ，其统计标准偏差为σ＝０．８０４，从而推算出该结构激光器的退化激活能Ｅａ＝０．５４３ｅＶ，其２５ ...
吴振英, 吴桐, 胡常炎, 刘自力, 李蓉萍, 王淑琴, 赵俊英   +6 more
doaj  

ANALYSIS OF SPARE PARTS REQUIREMENTS BASED ON THE FAILURE RATE OF A COMPONENT USING THE POISSON PROCESS METHOD IN A CASE STUDY AT PT. XYZ

Rekayasa Mesin
This study presents the conclusions drawn from previous data analysis, highlighting several significant key findings. Firstly, an evaluation using a risk matrix revealed that the critical subsystem for the CC 206 Locomotive is the Diesel subsystem, which
Herdi Tamitakarza, Ferryanto Ferryanto, I Wayan Suweca   +2 more
doaj   +1 more source