Measuring energy wasted during braking by trains is a nontrivial task because it is performed by power semiconductor devices that switch high current levels at a few hundred hertz. The chopped signals produced are difficult to analyze, not only for the high switching frequency but also for the high slew rate that produces even higher harmonic content. In this harsh scenario, it is challenging to guarantee an adequate level of accuracy and it could be very expensive for railway operators, who often completely renounce measuring these quantities of interest, estimating it from mechanical quantities. In a previous article, we have already faced this issue by developing an accurate technique usable offline. Here, two simplified methods with suitable accuracy levels for train energy management and easy to be implemented on train control unit are proposed. This article describes the phenomena of interest and related measurement issues. A numerical solution together with a deep analysis on the input quantities needed is presented. The methods are applied to experimental data from a measurement campaign, conducted on-board train in the northern part of Italy. Furthermore, the metrological performances of the methods are assessed by adopting as a reference the offline technique.

A New Approach to Measure the Energy On-Board Train During Braking / Delle Femine, A; Signorino, D; Gallo, D; Giordano, D. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - 71:(2022), pp. 1-11. [10.1109/TIM.2022.3165743]

A New Approach to Measure the Energy On-Board Train During Braking

Signorino, D
Software
;
Giordano, D
Conceptualization
2022

Abstract

Measuring energy wasted during braking by trains is a nontrivial task because it is performed by power semiconductor devices that switch high current levels at a few hundred hertz. The chopped signals produced are difficult to analyze, not only for the high switching frequency but also for the high slew rate that produces even higher harmonic content. In this harsh scenario, it is challenging to guarantee an adequate level of accuracy and it could be very expensive for railway operators, who often completely renounce measuring these quantities of interest, estimating it from mechanical quantities. In a previous article, we have already faced this issue by developing an accurate technique usable offline. Here, two simplified methods with suitable accuracy levels for train energy management and easy to be implemented on train control unit are proposed. This article describes the phenomena of interest and related measurement issues. A numerical solution together with a deep analysis on the input quantities needed is presented. The methods are applied to experimental data from a measurement campaign, conducted on-board train in the northern part of Italy. Furthermore, the metrological performances of the methods are assessed by adopting as a reference the offline technique.
File in questo prodotto:
File Dimensione Formato  
A_New_Approach_to_Measure_the_Energy_On-Board_Train_During_Braking.pdf

non disponibili

Tipologia: Versione editoriale
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 2.28 MB
Formato Adobe PDF
2.28 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/76222
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact