Review of Fault Diagnosis Methods for Induction Machines in Railway Traction Applications

Energies, Journal Year: 2024, Volume and Issue: 17(11), P. 2728 - 2728

Published: June 4, 2024

Induction motors make up approximately 80% of the electric in railway sector due to their robustness, high efficiency, and low maintenance cost. Nevertheless, these are subject failures which can lead costly downtime service interruptions. In recent years, there has been a growing interest developing fault diagnosis systems for traction using advanced non-invasive detection data analysis techniques. Implementing methods applications prove challenging variable speed low-load operating conditions, as well use inverter-fed motor drives. This comprehensive review paper summarizes general induction machines. It details faults seen motors, most relevant signals measured detection, signal processing techniques extraction some classification algorithms purposes. By giving advantages drawbacks each technique, it helps select appropriate method that could address challenges applications.

Language: Английский

---

Description of a three-phase, four-wire system with a nonlinear receiver and an asymmetric voltage source using CPC power theory

Journal of Automation Electronics and Electrical Engineering, Journal Year: 2024, Volume and Issue: 5(3), P. 47 - 66

Published: Feb. 4, 2024

This article mathematically describes a three-phase, four-wire circuit in the case of nonlinear, unbalanced load, asymmetry power source with periodic, non-sinusoidal waveform. description uses Currents' Physical Components (CPC) theory for three-phase circuits. Determining energy flow between and load is possible by decomposing phase current into components depending on physical nature phenomena this circuit. Mathematical relationships were determined enabling decomposition direction causes their creation. A calculation example using results has been presented. The presented computational concept important mathematical analyzes circuits nonlinear receivers. Knowing phenomena, it to perform measures that limit value supplying load.

Language: Английский

---

DEVELOPMENT OF AN INNOVATIVE TECHNICAL SOLUTION FOR THE APPLICATION OF SEGMENTAL MANAGAN INSERTS ON THE WEAR SURFACE OF THE CLAMP OF THE TAMPING RAILWAY MACHINES

Advanced Engineering Letters, Journal Year: 2024, Volume and Issue: 3(2), P. 42 - 51

Published: Jan. 1, 2024

Research in this paper is focused on defining the appropriate methodology of integrated product development process constructing and practical application replaceable segments that are installed working surface rail construction tamping machine. The research presents an innovative solution segmental cast inserts made special alloyed steel with manganese as alloying element. specially designed segment clamp a spare part requires timely replacement to ensure optimal operation machine more extended exploitation. In paper, was compared traditional maintenance procedure by hardfacing layer worn clamp. innovativeness proposed technological for clamps reflected better reliability, i.e. extension shelf life up 4.5 times reduction 40.62 method reparative hardfacing. Efficiency, key factor maintenance, fact that, inventive solution, can be done field without need demobilize send it workshop.

Language: Английский

---

Land Terminal in Logistic Transport Chain and COVID-19 Pandemic in Poland

Transport and Telecommunication Journal, Journal Year: 2024, Volume and Issue: 25(4), P. 392 - 408

Published: Nov. 1, 2024

Abstract The issue of conducting transport processes in the land terminal light COVID-19 pandemic was raised by authors this article. goal research to receive an answer for question whether had real impact on flow cargos handling functioning Poland. Interview questionnaire, which distributed among 100 employees object used during research. conclusions from conducted are surprising because has not caused more competition between branches and lowering prices services, lockdown did cause suspending activity enterprise. It results its analysis. positive enterprise, shows a list data about cargos, increased years comparison with previous segment containers, definitely interest clients railway New Silk Road. Road is alternative maritime air China. also contributed development terminal. services associated transport, that is, customs clearance, cargo handling, storage, last mile services.

Language: Английский

---

The effectiveness of fire detection with convolutional neural networks

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych, Journal Year: 2024, Volume and Issue: 4, P. 48 - 62

Published: Dec. 23, 2024

Modeling the operation process of technical objects, especially complex and intelligent systems, is an important diagnostic problem. Such models are relevant when designing making decisions regarding maintenance, evaluating processes. A common assumption that model can only record changes in states occur over a finite period time. In traditional approach, analyzing number possible different operating object, set them used. The presented this article allows wide range issues related to objects. Using probability functions readiness modeling at initial design stage, assessing compliance object with expected maintenance schedule, potential results object.

Language: Английский

---