Improvement of the method of troubleshooting the causes of malfunctioning of electric locomotives using the MSUD-N diagnostic system
- Authors: Ryzhova E.L.1, Osipov V.Y.2
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Affiliations:
- Emperor Alexander I St. Petersburg State Transport University
- Saratov – Passenger Operational Locomotive Depot
- Issue: Vol 11, No 4 (2025)
- Pages: 599-624
- Section: Original studies
- URL: https://medbiosci.ru/transj/article/view/364021
- DOI: https://doi.org/10.17816/transsyst688758
- ID: 364021
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Abstract
AIM: This work aimed to develop an improved algorithm for analyzing the health of the equipment of EP1 electric locomotives using the data from the automated microprocessor control and monitoring system MSUD-N based on statistical processing of the results of monitoring a locomotive operation and to demonstrate the usefulness of its results.
METHODS: The role of diagnostic systems in the maintenance and repair of rolling stock was discussed. The approach used to find the causes of malfunctions is largely limited by available diagnostic information processing methods. We demonstrated a method to increase the accuracy of diagnostic data analysis and performed a comparative analysis of extracts from trip files of EP1 electric locomotives in regenerative braking and traction modes using a microprocessor-based traction motor diagnostic system installed on the EP1 electric locomotive.
RESULTS: We proposed an improved method for finding the causes of malfunctions in regeneration braking and traction modes of EP1 electric locomotives with the built-in MSUD-N diagnostic system as illustrated by three types of malfunctions (at locomotive operation, at trip file analysis, and post check-up). We studied real life examples of malfunctions that occurred in the electric locomotive electrical equipment and provided an illustrative report, which may be used for further analysis of the locomotive’s normal operation. To improve the method for detecting the malfunction, we developed an effective algorithm, determined advantages and disadvantages of this method, and considered the prospects for its further development. The developed algorithm for diagnosing locomotive operating parameters based on data from the MSUD-N system allows to make additional adjustments to troubleshooting and maintaining normal operation of all locomotive systems, reducing the effect of changes in equipment operating parameters following repairs and predicting the remaining service life of the locomotive.
CONCLUSION: Timely and accurate diagnostics of the traction motor to identify malfunctions will reduce the downtime of the electric locomotive during unscheduled repairs and allow to avoid unnecessary traction motor replacement costs. An improved troubleshooting algorithm used to detect the locomotive equipment faults allows to identify potential high-probability failures classified as a faulty but operational condition. Microprocessor control systems for electric locomotives have high diagnostic potential, which should be used in the design of contemporary service maintenance and routine repair systems with elements of predictive repair based on the actual health data of the equipment. Microprocessor-based diagnostic systems in electric locomotives may help develop measures aimed at reducing and preventing malfunctions, which in turn will reduce the number of line failures and delayed trains.
About the authors
Elena L. Ryzhova
Emperor Alexander I St. Petersburg State Transport University
Author for correspondence.
Email: elena-astanovskaja@rambler.ru
ORCID iD: 0000-0001-7984-2558
SPIN-code: 1880-3372
Cand. Sci. (Engineering), Associate Professor
Russian Federation, St. PetersburgVladislav Yu. Osipov
Saratov – Passenger Operational Locomotive Depot
Email: osipov.power@yandex.ru
ORCID iD: 0009-0009-4566-3274
SPIN-code: 9408-0251
leading technologist
Russian Federation, SaratovReferences
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