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...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/139880 |
| _version_ | 1811690474556096512 |
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| author | Yao, Wenli Xu, Yan Tang, Yi Loh, Poh Chiang Zhang, Xiaobin Blaabjerg, Frede |
| 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 |
| author_sort | Yao, Wenli |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T06:04:34Z |
| format | Journal Article |
| id | ntu-10356/139880 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:04:34Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-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. |
| 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 |
| title | 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_short | 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 |
| topic | Engineering::Electrical and electronic engineering Active Power Decoupling (APD) Differential Inverter |
| url | https://hdl.handle.net/10356/139880 |
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