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Modelling and simulation of regeneration in AC traction propulsion system of electrified railway

Shafighy, Mehran, Khoo, Suiyang and Kouzani, Abbas Z. 2015, Modelling and simulation of regeneration in AC traction propulsion system of electrified railway, IET electrical systems in transportation, vol. 5, no. 4, pp. 145-155, doi: 10.1049/iet-est.2014.0036.

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Title Modelling and simulation of regeneration in AC traction propulsion system of electrified railway
Author(s) Shafighy, Mehran
Khoo, Suiyang
Kouzani, Abbas Z.ORCID iD for Kouzani, Abbas Z. orcid.org/0000-0002-6292-1214
Journal name IET electrical systems in transportation
Volume number 5
Issue number 4
Start page 145
End page 155
Total pages 11
Publisher Institution of Engineering and Technology
Place of publication Stevenage, Eng.
Publication date 2015-12
ISSN 2042-9738
2042-9746
Summary This paper presents a robust model and its simulation to investigate the performance of an AC propulsion system in a rail vehicle for directly returning the regenerative braking power to the feeder substation of an AC traction network. This direct returning method can be an efficient approach for energy recovery if the regenerative braking is reliably applied. However, it is shown that this method can cause undesired voltage fluctuations if the regenerative braking regime or braking location of the rail vehicle change. The load torque on the traction motor (TM) is precisely modelled when pure electrical braking is applied. Different states of the direct torque controlled inverter are modelled when the TM regenerates. A circuit model for the utility grid, load impedances and the traction network is developed to evaluate the network receptivity against the regenerated power. The dynamics of the electromagnetic torque and the fluctuations of the DC-link voltage are investigated for two operational conditions: changes on the regenerative braking regime and changes on the rail vehicle braking location. The results justify how the DC-link voltage dramatically fluctuates with variations of the rail vehicle's operation conditions, whereas the electromagnetic torque is maintained on optimum rates.
Language eng
DOI 10.1049/iet-est.2014.0036
Field of Research 090602 Control Systems, Robotics and Automation
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, IET
Persistent URL http://hdl.handle.net/10536/DRO/DU:30081029

Document type: Journal Article
Collection: School of Engineering
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