Zhang, Qi and da Silva, Filipe Faria and Irnawan, Roni and Mochamad, Rian Fatah (2023) Control of MMC-based Isolated DC/DC converter for HVDC Tapping. In: 2023 IEEE BELGRADE POWERTECH, 25-29 June 2023, Belgrade, Serbia.
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Abstract
With development of HVDC technology, HVDC tapping technology becomes more attractive as a solution to improve reliability and power quality as well as to replace fossil fuels generation of tiny-scale island power systems. This paper proposes a modular multilevel converter (MMC) based isolated DC/DC converter as a potential solution for HVDC tapping technology, which extracts a small amount of energy from the main HVDC link to a low-voltage DC grid, to support a local island power system. Firstly, a new mathematical model of the isolated DC/DC converter is developed by introducing the common-mode and the difference-mode voltage. The developed model illustrates that the AC current can only be affected by the difference-mode voltage, and the power is simultaneously affected by the AC current and the common-mode voltage. Secondly, based on the developed model, a control system consisting of the current and the voltage control loops is designed for an MMCbased isolated DC/DC converter. The proposed control method is more flexible, and the dynamic performance of the isolated DC/DC converter can be improved by using the proposed method. A simulation verifies the performance of the proposed control system.
Item Type: | Conference or Workshop Item (Paper) |
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Additional Information: | IEEE Belgrade PowerTech Conference, Belgrade, SERBIA, JUN 25-29, 2023 |
Uncontrolled Keywords: | HVDC Tapping; isolated DC/DC converter; control strategy |
Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > Applications of electric power |
Divisions: | Faculty of Engineering > Electrical and Information Technology Department |
Depositing User: | Rita Yulianti Yulianti |
Date Deposited: | 18 Dec 2024 01:42 |
Last Modified: | 18 Dec 2024 01:42 |
URI: | https://ir.lib.ugm.ac.id/id/eprint/10315 |