Multi-tasking dc-dc and dc-ac converters for dc voltage tapping and power control in highly meshed multi-terminal HVDC networks
Adam, Grain Philip and Abdelsalam, Ibrahim and Xu, Lie and Fletcher, John and Burt, Graeme and Williams, Barry (2017) Multi-tasking dc-dc and dc-ac converters for dc voltage tapping and power control in highly meshed multi-terminal HVDC networks. IET Power Electronics. ISSN 1755-4543 (https://doi.org/10.1049/iet-pel.2016.1035)
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Abstract
this paper extends a recently proposed dc auto-transformer to a true multi-port converter that can function simultaneously as dc auto-transformer and a dc/ac converter for dc voltage matching and tapping, and power control in highly meshed multi-terminal dc grids. The presented multi-port converter can generate multiple adjustable dc voltages from a fixed or variable input dc voltage, or from an active ac grid. Theoretical discussions and simulations indicate that when the proposed multi-port converter is used as a hybrid dc and ac hub to manage congestions and resolve loop flow issues in a highly meshed multi-terminal dc network, large dc power can be fed to the lower dc terminal, without exposing the switching devices of the lower sub-converter to excessive current stress. Its increased control flexibility and response to dc faults at high and low dc terminals are validated using simulations and experiments.
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Item type: Article ID code: 61741 Dates: DateEvent11 August 2017Published11 August 2017Published Online29 July 2017AcceptedSubjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 06 Sep 2017 14:35 Last modified: 09 Apr 2024 08:29 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/61741