Generalized power decoupling control for single-phase differential inverters with nonlinear loads

Differential inverters provide a cost-effective solution to the second-order ripple power issue in single-phase systems. Most existing differential inverter-based power decoupling methods are for linear loads, which may not work well for nonlinear loads. When supplying nonlinear loads, differential...

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Main Authors: Yao, Wenli, Xu, Yan, Tang, Yi, Loh, Poh Chiang, Zhang, Xiaobin, Blaabjerg, Frede
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/139880
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1398802020-05-22T06:03:14Z Generalized power decoupling control for single-phase differential inverters with nonlinear loads Yao, Wenli Xu, Yan Tang, Yi Loh, Poh Chiang Zhang, Xiaobin Blaabjerg, Frede School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Active Power Decoupling (APD) Differential Inverter Differential inverters provide a cost-effective solution to the second-order ripple power issue in single-phase systems. Most existing differential inverter-based power decoupling methods are for linear loads, which may not work well for nonlinear loads. When supplying nonlinear loads, differential inverters may suffer from harmonics at the ac terminal, which may propagate to the dc side and deteriorate the performance of power decoupling. In this paper, the harmonic mitigation is realized by reshaping capacitor voltages, and it is applied to buck-, boost-, and buck-boost-type differential inverters with detailed harmonics compensation capacity analysis. Then, a feedback linearization-based dc current feedback control scheme is proposed to realize the harmonic mitigation; hence, both the dc-side ripple power and the nonlinearity found in differential inverters can be decoupled simultaneously. The proposed control scheme is developed based on a generalized half-bridge model and can be applied to buck-, boost-, or buck-boost-type differential inverters with minor revisions. Experimental results are presented to validate the performance of the proposed control scheme and theoretical analysis. 2020-05-22T06:03:14Z 2020-05-22T06:03:14Z 2018 Journal Article Yao, W., Xu, Y., Tang, Y., Loh, P. C., Zhang, X., & Blaabjerg, F. (2019). Generalized power decoupling control for single-phase differential inverters with nonlinear loads. IEEE Journal of Emerging and Selected Topics in Power Electronics, 7(2), 1137-1151. doi:10.1109/JESTPE.2018.2844098 2168-6777 https://hdl.handle.net/10356/139880 10.1109/JESTPE.2018.2844098 2-s2.0-85048013928 2 7 1137 1151 en IEEE Journal of Emerging and Selected Topics in Power Electronics © 2018 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Active Power Decoupling (APD)
Differential Inverter
spellingShingle Engineering::Electrical and electronic engineering
Active Power Decoupling (APD)
Differential Inverter
Yao, Wenli
Xu, Yan
Tang, Yi
Loh, Poh Chiang
Zhang, Xiaobin
Blaabjerg, Frede
Generalized power decoupling control for single-phase differential inverters with nonlinear loads
description Differential inverters provide a cost-effective solution to the second-order ripple power issue in single-phase systems. Most existing differential inverter-based power decoupling methods are for linear loads, which may not work well for nonlinear loads. When supplying nonlinear loads, differential inverters may suffer from harmonics at the ac terminal, which may propagate to the dc side and deteriorate the performance of power decoupling. In this paper, the harmonic mitigation is realized by reshaping capacitor voltages, and it is applied to buck-, boost-, and buck-boost-type differential inverters with detailed harmonics compensation capacity analysis. Then, a feedback linearization-based dc current feedback control scheme is proposed to realize the harmonic mitigation; hence, both the dc-side ripple power and the nonlinearity found in differential inverters can be decoupled simultaneously. The proposed control scheme is developed based on a generalized half-bridge model and can be applied to buck-, boost-, or buck-boost-type differential inverters with minor revisions. Experimental results are presented to validate the performance of the proposed control scheme and theoretical analysis.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Yao, Wenli
Xu, Yan
Tang, Yi
Loh, Poh Chiang
Zhang, Xiaobin
Blaabjerg, Frede
format Article
author Yao, Wenli
Xu, Yan
Tang, Yi
Loh, Poh Chiang
Zhang, Xiaobin
Blaabjerg, Frede
author_sort Yao, Wenli
title Generalized power decoupling control for single-phase differential inverters with nonlinear loads
title_short Generalized power decoupling control for single-phase differential inverters with nonlinear loads
title_full Generalized power decoupling control for single-phase differential inverters with nonlinear loads
title_fullStr Generalized power decoupling control for single-phase differential inverters with nonlinear loads
title_full_unstemmed Generalized power decoupling control for single-phase differential inverters with nonlinear loads
title_sort generalized power decoupling control for single-phase differential inverters with nonlinear loads
publishDate 2020
url https://hdl.handle.net/10356/139880
_version_ 1681058191887040512