Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple
The high and low order dc-link current ripple can be caused under balanced and unbalanced ac grid/load conditions for three-phase modular multilevel converters (MMCs). To enhance the dc-link current quality, this paper proposes an additional-levels-based control (ALC) method, where the conventional...
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sg-ntu-dr.10356-1721512023-12-01T15:40:39Z Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple Yu, Qiang Deng, Fujin Tang, Yi Wang, Yanbo Blaabjerg, Frede School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Circulating Current DC-Link Current Ripple The high and low order dc-link current ripple can be caused under balanced and unbalanced ac grid/load conditions for three-phase modular multilevel converters (MMCs). To enhance the dc-link current quality, this paper proposes an additional-levels-based control (ALC) method, where the conventional modulation is employed to generate ac-side voltage levels and a model predictive control (MPC) algorithm with reduced calculation burden is developed to produce additional levels for dc-link current performance improvement. Through evaluating the cost function of MPC, the proposed method can reduce both high and low order dc-link current ripple for the MMC. Meanwhile, it avoids disturbing the quality of the ac-side voltage. Besides, the calculation burden of the proposed method is independent of the submodules’ number per arm. The validity and effectiveness of the proposed method have been verified by simulation and experimental results. Published version 2023-11-27T04:21:32Z 2023-11-27T04:21:32Z 2023 Journal Article Yu, Q., Deng, F., Tang, Y., Wang, Y. & Blaabjerg, F. (2023). Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple. International Journal of Electrical Power and Energy Systems, 153, 109288-. https://dx.doi.org/10.1016/j.ijepes.2023.109288 0142-0615 https://hdl.handle.net/10356/172151 10.1016/j.ijepes.2023.109288 2-s2.0-85161908167 153 109288 en International Journal of Electrical Power and Energy Systems © 2023 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). application/pdf |
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Engineering::Electrical and electronic engineering Circulating Current DC-Link Current Ripple Yu, Qiang Deng, Fujin Tang, Yi Wang, Yanbo Blaabjerg, Frede Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple |
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The high and low order dc-link current ripple can be caused under balanced and unbalanced ac grid/load conditions for three-phase modular multilevel converters (MMCs). To enhance the dc-link current quality, this paper proposes an additional-levels-based control (ALC) method, where the conventional modulation is employed to generate ac-side voltage levels and a model predictive control (MPC) algorithm with reduced calculation burden is developed to produce additional levels for dc-link current performance improvement. Through evaluating the cost function of MPC, the proposed method can reduce both high and low order dc-link current ripple for the MMC. Meanwhile, it avoids disturbing the quality of the ac-side voltage. Besides, the calculation burden of the proposed method is independent of the submodules’ number per arm. The validity and effectiveness of the proposed method have been verified by simulation and experimental results. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Yu, Qiang Deng, Fujin Tang, Yi Wang, Yanbo Blaabjerg, Frede |
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Article |
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Yu, Qiang Deng, Fujin Tang, Yi Wang, Yanbo Blaabjerg, Frede |
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Yu, Qiang |
title |
Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple |
title_short |
Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple |
title_full |
Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple |
title_fullStr |
Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple |
title_full_unstemmed |
Additional-levels-based control method for modular multilevel converters with reduced DC-link current ripple |
title_sort |
additional-levels-based control method for modular multilevel converters with reduced dc-link current ripple |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/172151 |
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1784855604225900544 |