Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges
Electric spring (ES) is an emerging smart grid technology for stabilizing the voltage and frequency in a power network. Being fast demand-side-management technology, ES has recently been extended to the medium-voltage (MV) level in an ac-dc power conversion system that connects the distribution line...
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sg-ntu-dr.10356-1727812023-12-20T01:05:23Z Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges Yuan, Huawei Lam, Hin Sang Beniwal, Neha Tan, Siew-Chong Pou, Josep Hui, Ron Shu-Yuen School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Distribution Network Cooperative Control Electric spring (ES) is an emerging smart grid technology for stabilizing the voltage and frequency in a power network. Being fast demand-side-management technology, ES has recently been extended to the medium-voltage (MV) level in an ac-dc power conversion system that connects the distribution line of 6.6/11/22 kV to a dc grid of 800 V. To interface with the MV power grid, a diode-clamped converter (DCC) and multiple dual active bridges (DABs) can be employed to construct the MV-ES system. The balance of the capacitor voltages is crucial for DCCs, and thereby also for the MV-ES system. Conventional voltage-balancing approaches for DCCs generally compromise the quality of the grid-side voltage and current, which is undesirable especially in high-voltage high-power occasions. In this article, a voltage-balancing control solution is proposed for the MV-ES system via the cooperation of the DCC and DABs. By taking advantage of the DABs in voltage balancing, the DCC can adopt simple modulation and ensure grid-friendly voltage and current injection into the grid. The proposed voltage-balancing solution is verified using simulations in a five-level system and with practical experiments for a three-level system. Nanyang Technological University This work was supported in part by the NTU MediaTek Endowment Fund 03INS001124C140 and NTU Research Exploration Grant 03INS001253C140. 2023-12-20T01:05:23Z 2023-12-20T01:05:23Z 2023 Journal Article Yuan, H., Lam, H. S., Beniwal, N., Tan, S., Pou, J. & Hui, R. S. (2023). Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges. IEEE Transactions On Power Electronics, 38(10), 11997-12009. https://dx.doi.org/10.1109/TPEL.2023.3263184 0885-8993 https://hdl.handle.net/10356/172781 10.1109/TPEL.2023.3263184 2-s2.0-85153338822 10 38 11997 12009 en 03INS001124C140 03INS001253C140 IEEE Transactions on Power Electronics © 2023 IEEE. All rights reserved. |
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Engineering::Electrical and electronic engineering Distribution Network Cooperative Control Yuan, Huawei Lam, Hin Sang Beniwal, Neha Tan, Siew-Chong Pou, Josep Hui, Ron Shu-Yuen Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges |
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Electric spring (ES) is an emerging smart grid technology for stabilizing the voltage and frequency in a power network. Being fast demand-side-management technology, ES has recently been extended to the medium-voltage (MV) level in an ac-dc power conversion system that connects the distribution line of 6.6/11/22 kV to a dc grid of 800 V. To interface with the MV power grid, a diode-clamped converter (DCC) and multiple dual active bridges (DABs) can be employed to construct the MV-ES system. The balance of the capacitor voltages is crucial for DCCs, and thereby also for the MV-ES system. Conventional voltage-balancing approaches for DCCs generally compromise the quality of the grid-side voltage and current, which is undesirable especially in high-voltage high-power occasions. In this article, a voltage-balancing control solution is proposed for the MV-ES system via the cooperation of the DCC and DABs. By taking advantage of the DABs in voltage balancing, the DCC can adopt simple modulation and ensure grid-friendly voltage and current injection into the grid. The proposed voltage-balancing solution is verified using simulations in a five-level system and with practical experiments for a three-level system. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Yuan, Huawei Lam, Hin Sang Beniwal, Neha Tan, Siew-Chong Pou, Josep Hui, Ron Shu-Yuen |
format |
Article |
author |
Yuan, Huawei Lam, Hin Sang Beniwal, Neha Tan, Siew-Chong Pou, Josep Hui, Ron Shu-Yuen |
author_sort |
Yuan, Huawei |
title |
Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges |
title_short |
Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges |
title_full |
Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges |
title_fullStr |
Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges |
title_full_unstemmed |
Cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges |
title_sort |
cooperative voltage-balancing control for medium-voltage electric-spring system based on diode-clamped converter and dual active bridges |
publishDate |
2023 |
url |
https://hdl.handle.net/10356/172781 |
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1787136768572653568 |