Implementation and evaluation of a new dvr topology with ac link for series compensation
This paper introduces a new three-phase dynamic voltage restorer (DVR) working in series compensation with an AC link, called AT-DVR. One of the main features of AT-DVR is an AC/AC buck converter, which is used to obtain the AC voltage for compensation. AT-DVR has the capacity to mitigate sag and sw...
- Autores:
-
Bolaños Moreno, Franklyn Hercilio
Palacios Duarte, Juan Esteban
Posada, Johnny
López Sotelo, Jesús Alfonso
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2020
- Institución:
- Universidad Autónoma de Occidente
- Repositorio:
- RED: Repositorio Educativo Digital UAO
- Idioma:
- eng
- OAI Identifier:
- oai:red.uao.edu.co:10614/13231
- Acceso en línea:
- https://hdl.handle.net/10614/13231
- Palabra clave:
- Restaurador dinámico de voltaje
Convertidor de voltaje
Electrónica de potencia
Power electronics
Dynamic voltage restorer
Power converter
Sag
Series compensation
Swell
- Rights
- openAccess
- License
- Derechos reservados - Elsiever, 2020
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dc.title.eng.fl_str_mv |
Implementation and evaluation of a new dvr topology with ac link for series compensation |
title |
Implementation and evaluation of a new dvr topology with ac link for series compensation |
spellingShingle |
Implementation and evaluation of a new dvr topology with ac link for series compensation Restaurador dinámico de voltaje Convertidor de voltaje Electrónica de potencia Power electronics Dynamic voltage restorer Power converter Sag Series compensation Swell |
title_short |
Implementation and evaluation of a new dvr topology with ac link for series compensation |
title_full |
Implementation and evaluation of a new dvr topology with ac link for series compensation |
title_fullStr |
Implementation and evaluation of a new dvr topology with ac link for series compensation |
title_full_unstemmed |
Implementation and evaluation of a new dvr topology with ac link for series compensation |
title_sort |
Implementation and evaluation of a new dvr topology with ac link for series compensation |
dc.creator.fl_str_mv |
Bolaños Moreno, Franklyn Hercilio Palacios Duarte, Juan Esteban Posada, Johnny López Sotelo, Jesús Alfonso |
dc.contributor.author.spa.fl_str_mv |
Bolaños Moreno, Franklyn Hercilio Palacios Duarte, Juan Esteban Posada, Johnny |
dc.contributor.author.none.fl_str_mv |
López Sotelo, Jesús Alfonso |
dc.subject.spa.fl_str_mv |
Restaurador dinámico de voltaje Convertidor de voltaje |
topic |
Restaurador dinámico de voltaje Convertidor de voltaje Electrónica de potencia Power electronics Dynamic voltage restorer Power converter Sag Series compensation Swell |
dc.subject.armarc.spa.fl_str_mv |
Electrónica de potencia |
dc.subject.armarc.eng.fl_str_mv |
Power electronics |
dc.subject.proposal.eng.fl_str_mv |
Dynamic voltage restorer Power converter Sag Series compensation Swell |
description |
This paper introduces a new three-phase dynamic voltage restorer (DVR) working in series compensation with an AC link, called AT-DVR. One of the main features of AT-DVR is an AC/AC buck converter, which is used to obtain the AC voltage for compensation. AT-DVR has the capacity to mitigate sag and swell events. A dynamic model of AT-DVR is presented in order to explain its advantages and its limitations. PI and fuzzy controllers were implemented to guarantee mitigation of sag and swell events, and these were evaluated using four performance indexes via simulation. Finally, a hardware implementation of the AT-DVR is described, and its behaviour when a fault occurs is demonstrated |
publishDate |
2020 |
dc.date.issued.none.fl_str_mv |
2020-04 |
dc.date.accessioned.none.fl_str_mv |
2021-09-21T14:25:33Z |
dc.date.available.none.fl_str_mv |
2021-09-21T14:25:33Z |
dc.type.spa.fl_str_mv |
Artículo de revista |
dc.type.coar.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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0378-7796 |
dc.identifier.uri.eng.fl_str_mv |
https://hdl.handle.net/10614/13231 |
identifier_str_mv |
0378-7796 |
url |
https://hdl.handle.net/10614/13231 |
dc.language.iso.spa.fl_str_mv |
eng |
language |
eng |
dc.relation.citationedition.spa.fl_str_mv |
Volumen 181(2020) |
dc.relation.citationendpage.spa.fl_str_mv |
11 |
dc.relation.citationstartpage.spa.fl_str_mv |
1 |
dc.relation.citationvolume.spa.fl_str_mv |
Volumen 181 |
dc.relation.cites.spa.fl_str_mv |
Moreno, F.B., Palacios, J.E., Posada J., López, J.A., (abril, 2020). Implementation and evaluation of a new DVR topology with AC link for series compensation. Electric Power Systems Research Vol. 181, 1-11. https://doi.org/10.1016/j.epsr.2019.106184 |
dc.relation.ispartofjournal.spa.fl_str_mv |
Electric Power Systems Research |
dc.relation.references.spa.fl_str_mv |
[1] R.M. Strzelecki, G. Benysek (Eds.), Power Electronics in Smart Electrical Energy Networks, Springer London, London, 2008. [2] E. Hossain, M.R. Tur, S. Padmanaban, S. Ay, I. Khan, Analysis and mitigation of power quality issues in distributed generation systems using custom power devices, IEEE Access 6 (2018) 16816–16833. [3] N.G. Hingorani, Future opportunities for electric power systems, IEEE Power Eng. Rev. PER-7 (October (10)) (1987) 4–5. [4] N.G. Hingorani, Future role of power electronics in power systems, Proceedings of the 7th International Symposium on Power Semiconductor Devices and ICs, 1995, ISPSD, 1995, pp. 13–15 95. [5] H. Hafezi, R. Faranda, Dynamic voltage conditioner, a new concept for smart Lowvoltage distribution system, IEEE Trans. Power Electron (2017) 1–1. [6] T.C. Archana, P. Reji, Power quality improvement using self-supported dynamic voltage restorer (DVR) in distribution system, 2015 International Conference on Power, Instrumentation, Control and Computing (PICC) (2015) 1–6. [7] V. Dargahi, A.K. Sadigh, K. Corzine, Medium voltage dynamic voltage restorer (DVR) based on DFCM converter for power quality improvement, 2016 Clemson University Power Systems Conference (PSC) (2016) 1–8. [8] H. Iman-Eini, S. Galeshi, Dynamic voltage restorer employing multilevel cascaded H-Bridge inverter, IET Power Electron. 9 (September (11)) (2016) 2196–2204. [9] W. Jing, X. Aiqin, S. Yueyue, A survey on control strategies of dynamic voltage restorer, 2008 13th International Conference on Harmonics and Quality of Power (2008) 1–5. [10] F. Mancilla-David, S. Bhattacharya, G. Venkataramanan, A comparative evaluation of series power-flow controllers using DC- and AC-link converters, IEEE Trans. Power Deliv. 23 (April (2)) (2008) 985–996. [11] S. Jothibasu, M.K. Mishra, A AC-AC converter based topology for mitigation of voltage sag with phase jump, 2013 IEEE 8th International Conference on Industrial and Information Systems, (2013), pp. 259–264. [12] S. Preetha, R. Bhavani, N.R. Prabha, Design of ultra-capacitor based DVR for power quality improvement, 2016 International Conference on Circuit, Power and Computing Technologies (ICCPCT), (2016), pp. 1–8. [13] T. AppalaNaidu, The role of dynamic voltage restorer (DVR) in improving power quality, 2016 2nd International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB), (2016), pp. 136–141. [14] J.M. Lozano García, DVR Topology Based on a Converter Matrix for Improving Power Quality in Distribution Systems (Topologías del DVR Basadas en un Convertidor Matricial para Mejorar la Calidad de la Energía en Sistemas de Distribución), CINVESTAV, Guadalajara, Jalisco, México, 2011. [15] J.C. Rosas Caro, Simple Topologies for Power Conditioners and FACTS Controllers (Topologias Simples Para Acondicionadores De Potencia Y Controladores FACTS), CINVESTAV, Guadalajara, Jalisco, México, 2009. [16] P.M. García Vite, Dynamic Voltage Restorer Based on Vector Switching Converters,” PhD Thesis, Centro de Investigación y de Estudios Avanzados del I.P.N. Unidad Guadalajara, Guadalajara, Jalisco, México, 2012. [17] C. Li, et al., Insolated High frequency link AC-AC converter based on sinusoidal wave modulation technology for voltage compensation, 2013 IEEE ECCE Asia Downunder (ECCE Asia) (2013) 159–164. [18] Y. Amirnaser, R. Iravani, Voltage-Sourced Converters in Power Systems: Modeling, Control, and Applications, Wiley-IEEE Press, 2010. [19] A.K. Sadigh, K.M. Smedley, Review of voltage compensation methods in dynamic voltage restorer (DVR), 2012 IEEE Power and Energy Society General Meeting (2012) 1–8. [20] S. Solat, M. Moallem, M.A. Latify, A supervisory hierarchical fuzzy controller for dynamic voltage restorer (DVR), 2015 23rd Iranian Conference on Electrical Engineering (2015) 1694–1699. [21] A. Ghosh, G. Ledwich, Structures and control of a dynamic voltage regulator (DVR), IEEE Power Engineering Society Winter Meeting 2001 (2001) 1027–1032 vol. 3. [22] Y. Tang, J. Ding, Direct AC/AC converter based dynamic voltage restorer with one cycle control, 2015 IEEE Energy Conversion Congress and Exposition (ECCE) (2015) 2603–2609. [23] A. Taskin, T. Kumbasar, An open source Matlab/Simulink toolbox for interval type- 2 fuzzy logic systems, 2015 IEEE Symposium Series on Computational Intelligence, Cape Town, 2015, pp. 1561–1568. [24] E. Caicedo, J.A. López, A. Muñoz, Control Inteligente, Editorial Universidad del Valle, Colombia, 2012. |
dc.rights.spa.fl_str_mv |
Derechos reservados - Elsiever, 2020 |
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Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) |
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Derechos reservados - Elsiever, 2020 https://creativecommons.org/licenses/by-nc-nd/4.0/ Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) http://purl.org/coar/access_right/c_abf2 |
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Bolaños Moreno, Franklyn Hercilio0ec8b13fe4b5406163f90f366b8e87e5Palacios Duarte, Juan Esteban88158b24b648a5edcb69e2d4f7619b6ePosada, Johnnyba0b927fb5d5b9e299f7bd413f450adeLópez Sotelo, Jesús Alfonsovirtual::2911-12021-09-21T14:25:33Z2021-09-21T14:25:33Z2020-040378-7796https://hdl.handle.net/10614/13231This paper introduces a new three-phase dynamic voltage restorer (DVR) working in series compensation with an AC link, called AT-DVR. One of the main features of AT-DVR is an AC/AC buck converter, which is used to obtain the AC voltage for compensation. AT-DVR has the capacity to mitigate sag and swell events. A dynamic model of AT-DVR is presented in order to explain its advantages and its limitations. PI and fuzzy controllers were implemented to guarantee mitigation of sag and swell events, and these were evaluated using four performance indexes via simulation. Finally, a hardware implementation of the AT-DVR is described, and its behaviour when a fault occurs is demonstrated11 páginasapplication/pdfengElectric Power Systems ResearchDerechos reservados - Elsiever, 2020https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)http://purl.org/coar/access_right/c_abf2https://www.sciencedirect.com/science/article/pii/S0378779619305036Restaurador dinámico de voltajeConvertidor de voltajeElectrónica de potenciaPower electronicsDynamic voltage restorerPower converterSagSeries compensationSwellImplementation and evaluation of a new dvr topology with ac link for series compensationArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85Volumen 181(2020)111Volumen 181Moreno, F.B., Palacios, J.E., Posada J., López, J.A., (abril, 2020). Implementation and evaluation of a new DVR topology with AC link for series compensation. Electric Power Systems Research Vol. 181, 1-11. https://doi.org/10.1016/j.epsr.2019.106184Electric Power Systems Research[1] R.M. Strzelecki, G. Benysek (Eds.), Power Electronics in Smart Electrical Energy Networks, Springer London, London, 2008.[2] E. Hossain, M.R. Tur, S. Padmanaban, S. Ay, I. Khan, Analysis and mitigation of power quality issues in distributed generation systems using custom power devices, IEEE Access 6 (2018) 16816–16833.[3] N.G. Hingorani, Future opportunities for electric power systems, IEEE Power Eng. Rev. PER-7 (October (10)) (1987) 4–5.[4] N.G. Hingorani, Future role of power electronics in power systems, Proceedings of the 7th International Symposium on Power Semiconductor Devices and ICs, 1995, ISPSD, 1995, pp. 13–15 95.[5] H. Hafezi, R. Faranda, Dynamic voltage conditioner, a new concept for smart Lowvoltage distribution system, IEEE Trans. Power Electron (2017) 1–1.[6] T.C. Archana, P. Reji, Power quality improvement using self-supported dynamic voltage restorer (DVR) in distribution system, 2015 International Conference on Power, Instrumentation, Control and Computing (PICC) (2015) 1–6.[7] V. Dargahi, A.K. Sadigh, K. Corzine, Medium voltage dynamic voltage restorer (DVR) based on DFCM converter for power quality improvement, 2016 Clemson University Power Systems Conference (PSC) (2016) 1–8.[8] H. Iman-Eini, S. Galeshi, Dynamic voltage restorer employing multilevel cascaded H-Bridge inverter, IET Power Electron. 9 (September (11)) (2016) 2196–2204.[9] W. Jing, X. Aiqin, S. Yueyue, A survey on control strategies of dynamic voltage restorer, 2008 13th International Conference on Harmonics and Quality of Power (2008) 1–5.[10] F. Mancilla-David, S. Bhattacharya, G. Venkataramanan, A comparative evaluation of series power-flow controllers using DC- and AC-link converters, IEEE Trans. Power Deliv. 23 (April (2)) (2008) 985–996.[11] S. Jothibasu, M.K. Mishra, A AC-AC converter based topology for mitigation of voltage sag with phase jump, 2013 IEEE 8th International Conference on Industrial and Information Systems, (2013), pp. 259–264.[12] S. Preetha, R. Bhavani, N.R. Prabha, Design of ultra-capacitor based DVR for power quality improvement, 2016 International Conference on Circuit, Power and Computing Technologies (ICCPCT), (2016), pp. 1–8.[13] T. AppalaNaidu, The role of dynamic voltage restorer (DVR) in improving power quality, 2016 2nd International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB), (2016), pp. 136–141.[14] J.M. Lozano García, DVR Topology Based on a Converter Matrix for Improving Power Quality in Distribution Systems (Topologías del DVR Basadas en un Convertidor Matricial para Mejorar la Calidad de la Energía en Sistemas de Distribución), CINVESTAV, Guadalajara, Jalisco, México, 2011.[15] J.C. Rosas Caro, Simple Topologies for Power Conditioners and FACTS Controllers (Topologias Simples Para Acondicionadores De Potencia Y Controladores FACTS), CINVESTAV, Guadalajara, Jalisco, México, 2009.[16] P.M. García Vite, Dynamic Voltage Restorer Based on Vector Switching Converters,” PhD Thesis, Centro de Investigación y de Estudios Avanzados del I.P.N. Unidad Guadalajara, Guadalajara, Jalisco, México, 2012.[17] C. Li, et al., Insolated High frequency link AC-AC converter based on sinusoidal wave modulation technology for voltage compensation, 2013 IEEE ECCE Asia Downunder (ECCE Asia) (2013) 159–164.[18] Y. Amirnaser, R. Iravani, Voltage-Sourced Converters in Power Systems: Modeling, Control, and Applications, Wiley-IEEE Press, 2010.[19] A.K. Sadigh, K.M. Smedley, Review of voltage compensation methods in dynamic voltage restorer (DVR), 2012 IEEE Power and Energy Society General Meeting (2012) 1–8.[20] S. Solat, M. Moallem, M.A. Latify, A supervisory hierarchical fuzzy controller for dynamic voltage restorer (DVR), 2015 23rd Iranian Conference on Electrical Engineering (2015) 1694–1699.[21] A. Ghosh, G. Ledwich, Structures and control of a dynamic voltage regulator (DVR), IEEE Power Engineering Society Winter Meeting 2001 (2001) 1027–1032 vol. 3.[22] Y. Tang, J. Ding, Direct AC/AC converter based dynamic voltage restorer with one cycle control, 2015 IEEE Energy Conversion Congress and Exposition (ECCE) (2015) 2603–2609.[23] A. Taskin, T. Kumbasar, An open source Matlab/Simulink toolbox for interval type- 2 fuzzy logic systems, 2015 IEEE Symposium Series on Computational Intelligence, Cape Town, 2015, pp. 1561–1568.[24] E. Caicedo, J.A. López, A. Muñoz, Control Inteligente, Editorial Universidad del Valle, Colombia, 2012.GeneralPublicationfc227fb1-22ec-47f0-afe7-521c61fddd32virtual::2911-1fc227fb1-22ec-47f0-afe7-521c61fddd32virtual::2911-1https://scholar.google.com.au/citations?user=7PIjh_MAAAAJ&hl=envirtual::2911-10000-0002-9731-8458virtual::2911-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000249106virtual::2911-1LICENSElicense.txtlicense.txttext/plain; charset=utf-81665https://red.uao.edu.co/bitstreams/354435b5-2ad6-491b-85a1-78a191046267/download20b5ba22b1117f71589c7318baa2c560MD52ORIGINAL00376_Implementation and evaluation of a new DVR topology with AC link for series compensation.pdf00376_Implementation and evaluation of a new DVR topology with AC link for series compensation.pdfTexto archivo completo del artículo de revista, PDFapplication/pdf1072822https://red.uao.edu.co/bitstreams/1fc79537-4c3a-44e3-86cf-7dd59db1a070/download134778ba2462fd26e7b788c160e1aac8MD53TEXT00376_Implementation and evaluation of a new DVR topology with AC link for series compensation.pdf.txt00376_Implementation and evaluation of a new DVR topology with AC link for series compensation.pdf.txtExtracted texttext/plain34126https://red.uao.edu.co/bitstreams/c9f79b7b-6c03-4a40-a8b8-5d0804aadd36/download78071b90a3541e97eea50266052f4b18MD54THUMBNAIL00376_Implementation and evaluation of a new DVR topology with AC link for series compensation.pdf.jpg00376_Implementation and evaluation of a new DVR topology with AC link for series compensation.pdf.jpgGenerated Thumbnailimage/jpeg14989https://red.uao.edu.co/bitstreams/f9260cb8-b621-43fd-8c55-7526b4667585/downloaddf8cbce0dba00182b25205ed2f2ea55bMD5510614/13231oai:red.uao.edu.co:10614/132312024-03-07 16:32:52.214https://creativecommons.org/licenses/by-nc-nd/4.0/Derechos reservados - Elsiever, 2020restrictedhttps://red.uao.edu.coRepositorio Digital Universidad Autonoma de Occidenterepositorio@uao.edu.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 |