Improved hold-up time for WBG-based single-phase converters

Rajamony, Rajesh and Ming, Wenlong ORCID: https://orcid.org/0000-0003-1780-7292 2019. Improved hold-up time for WBG-based single-phase converters. Presented at: 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), Genova, Italy, 3-5 September 2019. 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe). IEEE, P.1. 10.23919/EPE.2019.8914818

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Abstract

Hold-up time is required for the safe and uninterrupted operation of the power converters. This prevents unwanted resetting of the systems. In this paper, the hold-up time for a single-phase converter with siginificantly-reduced DC capacitors is investigated. The required de-link and auxiliary capacitors are selected to ensure a certain period of hold-up time after the input supply fails. To maximize the utilization of de-link voltage, this paper presents a simplified neutral leg control strategy and it has been ensured the converter control under hold-up operations. A trade-off design strategy is presented and the outcome has been compared with the solution without the auxiliary capacitor. Simulation studies were carried out to verify the hold-up time performance of the converters.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	IEEE
Last Modified:	28 Mar 2023 01:05
URI:	https://orca.cardiff.ac.uk/id/eprint/128253

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