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Design a nine-level modular multilevel converter for DC railway electrification system

A recuperating converter is highly demanded in traction power substation to deliver the braking energy generated by a traction vehicle. Conventional voltage source inverter had been implemented in the traction power station. However, large AC line filters must be installed to improve the quality of...

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Main Authors: Toh C.L., Ooi P.C.
Other Authors: 8690228000
Format: Article
Published: Institute of Advanced Engineering and Science 2023
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spelling my.uniten.dspace-255622023-05-29T16:10:57Z Design a nine-level modular multilevel converter for DC railway electrification system Toh C.L. Ooi P.C. 8690228000 35766926800 A recuperating converter is highly demanded in traction power substation to deliver the braking energy generated by a traction vehicle. Conventional voltage source inverter had been implemented in the traction power station. However, large AC line filters must be installed to improve the quality of AC voltages and currents. This paper proposes to install a nine-level Modular Multilevel Converter (MMC) as a recuperating converter. The main aim is to eliminate the need of AC line filters while producing good quality of AC voltage and current waveforms. The MMC is designed and modelled using MATLAB/Simulink Simulation tool. A centralized control of balancing all the sub-module capacitor voltage level is proposed with Third Harmonic Voltage Injection Level Shifted Pulse Width Modulation (THVI-LSPWM) technique. The simulation results prove that with the application of MMC, good quality of ac voltages and currents are being produced. The Total Harmonic Distortion indexes are found less than 3.5 % without using any AC line filters in the system. In addition, the classic DC link capacitance has also being eliminated. � 2020, Institute of Advanced Engineering and Science. All rights reserved. Final 2023-05-29T08:10:56Z 2023-05-29T08:10:56Z 2020 Article 10.11591/ijpeds.v11.i1.pp151-159 2-s2.0-85077844893 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077844893&doi=10.11591%2fijpeds.v11.i1.pp151-159&partnerID=40&md5=0258f7b720588145ec90711c793486df https://irepository.uniten.edu.my/handle/123456789/25562 11 1 151 159 All Open Access, Gold, Green Institute of Advanced Engineering and Science Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
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description A recuperating converter is highly demanded in traction power substation to deliver the braking energy generated by a traction vehicle. Conventional voltage source inverter had been implemented in the traction power station. However, large AC line filters must be installed to improve the quality of AC voltages and currents. This paper proposes to install a nine-level Modular Multilevel Converter (MMC) as a recuperating converter. The main aim is to eliminate the need of AC line filters while producing good quality of AC voltage and current waveforms. The MMC is designed and modelled using MATLAB/Simulink Simulation tool. A centralized control of balancing all the sub-module capacitor voltage level is proposed with Third Harmonic Voltage Injection Level Shifted Pulse Width Modulation (THVI-LSPWM) technique. The simulation results prove that with the application of MMC, good quality of ac voltages and currents are being produced. The Total Harmonic Distortion indexes are found less than 3.5 % without using any AC line filters in the system. In addition, the classic DC link capacitance has also being eliminated. � 2020, Institute of Advanced Engineering and Science. All rights reserved.
author2 8690228000
author_facet 8690228000
Toh C.L.
Ooi P.C.
format Article
author Toh C.L.
Ooi P.C.
spellingShingle Toh C.L.
Ooi P.C.
Design a nine-level modular multilevel converter for DC railway electrification system
author_sort Toh C.L.
title Design a nine-level modular multilevel converter for DC railway electrification system
title_short Design a nine-level modular multilevel converter for DC railway electrification system
title_full Design a nine-level modular multilevel converter for DC railway electrification system
title_fullStr Design a nine-level modular multilevel converter for DC railway electrification system
title_full_unstemmed Design a nine-level modular multilevel converter for DC railway electrification system
title_sort design a nine-level modular multilevel converter for dc railway electrification system
publisher Institute of Advanced Engineering and Science
publishDate 2023
_version_ 1806427469897531392
score 13.223943

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