Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives

The progressive electrification of railways involves an increasing number of power electronic converters connected to the railway catenary, which may compromise its stability. Both the converter for traction and the converter for auxiliary power systems (APS) behave as constant power loads (CPL) and...

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Autores principales:	Jose Manuel Del Toro, Santiago Cobreces, Francisco Huerta, Carlos De La Viesca, Roberto Martin, Sergio De Lopez Diz
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Admittance shaping constant power loads dc catenary line quantitative feedback theory railway electrification robust control Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/52b20a88e17349d1b9f76b208beaf71f
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spelling	oai:doaj.org-article:52b20a88e17349d1b9f76b208beaf71f2021-11-20T00:02:11ZQuantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives2169-353610.1109/ACCESS.2021.3126457https://doaj.org/article/52b20a88e17349d1b9f76b208beaf71f2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9606683/https://doaj.org/toc/2169-3536The progressive electrification of railways involves an increasing number of power electronic converters connected to the railway catenary, which may compromise its stability. Both the converter for traction and the converter for auxiliary power systems (APS) behave as constant power loads (CPL) and interact negatively with the catenary impedance producing voltage instability. This article applies quantitative feedback theory (QFT) to design an ac voltage controller for the APS converter that shapes the dc input admittance of the converter by performing only ac side-control without a dc-side feedback loop. The QFT enables to design a low order controller that satisfies multiple performance specifications in systems with high uncertainty as is the case of the train system. The proposed control guarantees catenary stability while ensuring ac output voltage reference tracking and providing robustness to unmodeled uncertainties. As an additional contribution, the article presents an algorithm for including input admittance specifications in the QFT design process. The proposed control has been evaluated on an experimental platform that recreates the train system. Experimental results show that the controlled system meets railway standards and correctly shapes the specified dc input impedance.Jose Manuel Del ToroSantiago CobrecesFrancisco HuertaCarlos De La ViescaRoberto MartinSergio De Lopez DizIEEEarticleAdmittance shapingconstant power loadsdc catenary linequantitative feedback theoryrailway electrificationrobust controlElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 152461-152475 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Admittance shaping constant power loads dc catenary line quantitative feedback theory railway electrification robust control Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Admittance shaping constant power loads dc catenary line quantitative feedback theory railway electrification robust control Electrical engineering. Electronics. Nuclear engineering TK1-9971 Jose Manuel Del Toro Santiago Cobreces Francisco Huerta Carlos De La Viesca Roberto Martin Sergio De Lopez Diz Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives
description	The progressive electrification of railways involves an increasing number of power electronic converters connected to the railway catenary, which may compromise its stability. Both the converter for traction and the converter for auxiliary power systems (APS) behave as constant power loads (CPL) and interact negatively with the catenary impedance producing voltage instability. This article applies quantitative feedback theory (QFT) to design an ac voltage controller for the APS converter that shapes the dc input admittance of the converter by performing only ac side-control without a dc-side feedback loop. The QFT enables to design a low order controller that satisfies multiple performance specifications in systems with high uncertainty as is the case of the train system. The proposed control guarantees catenary stability while ensuring ac output voltage reference tracking and providing robustness to unmodeled uncertainties. As an additional contribution, the article presents an algorithm for including input admittance specifications in the QFT design process. The proposed control has been evaluated on an experimental platform that recreates the train system. Experimental results show that the controlled system meets railway standards and correctly shapes the specified dc input impedance.
format	article
author	Jose Manuel Del Toro Santiago Cobreces Francisco Huerta Carlos De La Viesca Roberto Martin Sergio De Lopez Diz
author_facet	Jose Manuel Del Toro Santiago Cobreces Francisco Huerta Carlos De La Viesca Roberto Martin Sergio De Lopez Diz
author_sort	Jose Manuel Del Toro
title	Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives
title_short	Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives
title_full	Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives
title_fullStr	Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives
title_full_unstemmed	Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives
title_sort	quantitative feedback theory control to improve stability in dc catenary feeding traction and auxiliary drives
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/52b20a88e17349d1b9f76b208beaf71f
work_keys_str_mv	AT josemanueldeltoro quantitativefeedbacktheorycontroltoimprovestabilityindccatenaryfeedingtractionandauxiliarydrives AT santiagocobreces quantitativefeedbacktheorycontroltoimprovestabilityindccatenaryfeedingtractionandauxiliarydrives AT franciscohuerta quantitativefeedbacktheorycontroltoimprovestabilityindccatenaryfeedingtractionandauxiliarydrives AT carlosdelaviesca quantitativefeedbacktheorycontroltoimprovestabilityindccatenaryfeedingtractionandauxiliarydrives AT robertomartin quantitativefeedbacktheorycontroltoimprovestabilityindccatenaryfeedingtractionandauxiliarydrives AT sergiodelopezdiz quantitativefeedbacktheorycontroltoimprovestabilityindccatenaryfeedingtractionandauxiliarydrives
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Quantitative Feedback Theory Control to Improve Stability in DC Catenary Feeding Traction and Auxiliary Drives

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