Decentralized reactive power sharing among parallel inverters through inherent dead-time effect
Load power sharing is an important aspect of the parallel-connected voltage source inverters (VSIs). It is widely accepted that the active power sharing accuracy is ensured by the conventional frequency droop control, whereas the reactive power sharing is poor because of mismatched grid impedances....
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sg-ntu-dr.10356-1367022021-01-08T02:32:34Z Decentralized reactive power sharing among parallel inverters through inherent dead-time effect Qi, Yang Tang, Yi School of Electrical and Electronic Engineering Interdisciplinary Graduate School (IGS) 2019 IEEE ECCE Energy Research Institute @ NTU (ERI@N) Engineering::Electrical and electronic engineering Islanded Microgrids Parallel Inverters Load power sharing is an important aspect of the parallel-connected voltage source inverters (VSIs). It is widely accepted that the active power sharing accuracy is ensured by the conventional frequency droop control, whereas the reactive power sharing is poor because of mismatched grid impedances. To overcome this challenge, a novel control scheme is proposed in this paper, which utilizes the inherent dead-time effect to improve the reactive power sharing. As compared with most of the existing power-sharing approaches, the proposed control scheme can eliminate the reactive power sharing error in a completely decentralized manner. Moreover, the VSI output current quality can also be improved at the same time. Simulation and experimental results from a typical microgrid prototype are provided for verification. Accepted version 2020-01-10T07:32:13Z 2020-01-10T07:32:13Z 2019 Conference Paper Qi, Y., & Tang, Y. (2019). Decentralized reactive power sharing among parallel inverters through inherent dead-time effect. 2019 IEEE ECCE. doi:10.1109/ECCE.2019.8913061 https://hdl.handle.net/10356/136702 10.1109/ECCE.2019.8913061 en © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: https://doi.org/10.1109/ECCE.2019.8913061 application/pdf |
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Engineering::Electrical and electronic engineering Islanded Microgrids Parallel Inverters Qi, Yang Tang, Yi Decentralized reactive power sharing among parallel inverters through inherent dead-time effect |
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Load power sharing is an important aspect of the parallel-connected voltage source inverters (VSIs). It is widely accepted that the active power sharing accuracy is ensured by the conventional frequency droop control, whereas the reactive power sharing is poor because of mismatched grid impedances. To overcome this challenge, a novel control scheme is proposed in this paper, which utilizes the inherent dead-time effect to improve the reactive power sharing. As compared with most of the existing power-sharing approaches, the proposed control scheme can eliminate the reactive power sharing error in a completely decentralized manner. Moreover, the VSI output current quality can also be improved at the same time. Simulation and experimental results from a typical microgrid prototype are provided for verification. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Qi, Yang Tang, Yi |
format |
Conference or Workshop Item |
author |
Qi, Yang Tang, Yi |
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Qi, Yang |
title |
Decentralized reactive power sharing among parallel inverters through inherent dead-time effect |
title_short |
Decentralized reactive power sharing among parallel inverters through inherent dead-time effect |
title_full |
Decentralized reactive power sharing among parallel inverters through inherent dead-time effect |
title_fullStr |
Decentralized reactive power sharing among parallel inverters through inherent dead-time effect |
title_full_unstemmed |
Decentralized reactive power sharing among parallel inverters through inherent dead-time effect |
title_sort |
decentralized reactive power sharing among parallel inverters through inherent dead-time effect |
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2020 |
url |
https://hdl.handle.net/10356/136702 |
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1688665568609042432 |