Modeling and frequency analysis of a dual H-bridge current flow controller in meshed HVDC systems

Liu, Wei, Liang, Jun ORCID: https://orcid.org/0000-0001-7511-449X, Ugalde Loo, Carlos ORCID: https://orcid.org/0000-0001-6361-4454 and Li, Gen ORCID: https://orcid.org/0000-0002-0649-9493 2019. Modeling and frequency analysis of a dual H-bridge current flow controller in meshed HVDC systems. Presented at: EPE'19 ECCE Europe, 21st European Conference on Power Electronics and Applications, Genova, Italy, 3-5 September 2019. 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe). IEEE, pp. 1-9. 10.23919/EPE.2019.8915121

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Abstract

This paper investigates the modeling and operation of dual H-bridge current flow controllers (CFCs) in meshed high-voltage direct-current (HVDC) systems. Two operating modes of the CFC device, namely the ‘buck mode’ and the ‘boost mode’, are defined and analyzed. Small-signal models of the dual H-bridge CFC are derived in the s-domain for each operating mode. A frequency sweep procedure is carried out using PSIM to obtain frequency domain representations of the CFC to verify the validity and accuracy of the small-signal models. The dynamic performance of the dual H-bridge CFC is verified through time-domain simulations conducted in PSCAD/EMTDC.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	IEEE
ISBN:	9789075815313
Date of First Compliant Deposit:	30 July 2019
Date of Acceptance:	16 July 2019
Last Modified:	11 Mar 2023 02:54
URI:	https://orca.cardiff.ac.uk/id/eprint/124596

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