Extension of power transmission capacity in MMC-based HVDC systems through dynamic temperature-dependent current limits

Da Silva Goncalves, Jorge ORCID: https://orcid.org/0000-0002-5573-7742, Rogers, Daniel J. ORCID: https://orcid.org/0000-0001-8814-5332 and Liang, Jun ORCID: https://orcid.org/0000-0001-7511-449X 2015. Extension of power transmission capacity in MMC-based HVDC systems through dynamic temperature-dependent current limits. Presented at: Power Electronics and Applications (EPE'15 ECCE-Europe), 2015 17th European Conference on, Geneva, Switzerland, 8-10 Sept 2015. Power Electronics and Applications (EPE'15 ECCE-Europe), 2015 17th European Conference on. IEEE, pp. 1-10. 10.1109/EPE.2015.7309159

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Abstract

This paper proposes the extension of the current control loops used in Modular Multilevel Converters to include semiconductors junction temperature as an operational constraint. A new controller is added to the inner current loop to modulate the current limits as a function of the temperature, providing an extension of the power transmission capacity without violating the thermal limits of the semiconductors. A numerical method to investigate the operation of converters with temperature-dependent current limits is proposed and the stability of the controller is analyzed and validated through simulations under steady and transient operations.

Item Type:	Conference or Workshop Item (Poster)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher:	IEEE
Date of First Compliant Deposit:	30 March 2016
Last Modified:	31 Oct 2022 09:17
URI:	https://orca.cardiff.ac.uk/id/eprint/80445

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