Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads
The interleaved floating multilevel boost converter (IFMBC), featuring high step-up ratio, high power density, low operational stress, and low current/voltage ripple, is a feasible interface to adapt low-voltage high-power energy sources to dc microgrids (MGs). However, traditional control methods c...
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| Fformat: | Journal Article |
| Iaith: | English |
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2023
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| Mynediad Ar-lein: | https://hdl.handle.net/10356/172325 |
| _version_ | 1826118785754464256 |
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| author | Li, Xiangke Wang, Minghao Jiang, Wentao Dong, Chaoyu Xu, Zhao Wu, Xiaohua |
| author2 | School of Computer Science and Engineering |
| author_facet | School of Computer Science and Engineering Li, Xiangke Wang, Minghao Jiang, Wentao Dong, Chaoyu Xu, Zhao Wu, Xiaohua |
| author_sort | Li, Xiangke |
| collection | NTU |
| description | The interleaved floating multilevel boost converter (IFMBC), featuring high step-up ratio, high power density, low operational stress, and low current/voltage ripple, is a feasible interface to adapt low-voltage high-power energy sources to dc microgrids (MGs). However, traditional control methods can hardly ensure the stability of the IFMBC-interfaced dc MGs with tightly regulated constant power loads (CPLs) of negative and nonlinear incremental impedance. Besides, parameter uncertainties of the IFMBC will further threaten the stability of the dc MG, compromising the sustainable utilization of various energy sources. In this article, a compound large-signal stabilizer, which comprises super-twisting extended state observers and backstepping controllers, is proposed to stabilize dc bus voltage for the IFMBC interfaced high-power dc MGs with CPLs. By considering CPLs and parameter uncertainties as systematic disturbances, super-twisting ESOs can estimate the disturbances effectively during fast transients. By feeding forward the estimations, backstepping controllers are designed to accurately regulate the dc bus voltage. The large-signal stability of the dc MG is modeled and the respective results are justified by applying the Lyapunov's theorem. Simulations and experiments are performed to verify the efficacy of the proposed stabilizer. |
| first_indexed | 2024-10-01T04:49:11Z |
| format | Journal Article |
| id | ntu-10356/172325 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:49:11Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1723252023-12-06T04:46:20Z Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads Li, Xiangke Wang, Minghao Jiang, Wentao Dong, Chaoyu Xu, Zhao Wu, Xiaohua School of Computer Science and Engineering Agency for Science, Technology and Research Engineering::Computer science and engineering Backstepping Control Large-Signal Stability The interleaved floating multilevel boost converter (IFMBC), featuring high step-up ratio, high power density, low operational stress, and low current/voltage ripple, is a feasible interface to adapt low-voltage high-power energy sources to dc microgrids (MGs). However, traditional control methods can hardly ensure the stability of the IFMBC-interfaced dc MGs with tightly regulated constant power loads (CPLs) of negative and nonlinear incremental impedance. Besides, parameter uncertainties of the IFMBC will further threaten the stability of the dc MG, compromising the sustainable utilization of various energy sources. In this article, a compound large-signal stabilizer, which comprises super-twisting extended state observers and backstepping controllers, is proposed to stabilize dc bus voltage for the IFMBC interfaced high-power dc MGs with CPLs. By considering CPLs and parameter uncertainties as systematic disturbances, super-twisting ESOs can estimate the disturbances effectively during fast transients. By feeding forward the estimations, backstepping controllers are designed to accurately regulate the dc bus voltage. The large-signal stability of the dc MG is modeled and the respective results are justified by applying the Lyapunov's theorem. Simulations and experiments are performed to verify the efficacy of the proposed stabilizer. This work was supported in part by the National Natural Science Foundation of China under Grant 62101473, in part by the Guangdong Basic and Applied Basic Research Fund under Grant 2023A1515010653, and in part by the Foundation of the Hong Kong Polytechnic University under Grant 1-YY5Q and Grant 1-YY4T. 2023-12-06T04:46:20Z 2023-12-06T04:46:20Z 2024 Journal Article Li, X., Wang, M., Jiang, W., Dong, C., Xu, Z. & Wu, X. (2024). Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads. IEEE Transactions On Industrial Electronics, 71(1), 857-869. https://dx.doi.org/10.1109/TIE.2023.3243274 0278-0046 https://hdl.handle.net/10356/172325 10.1109/TIE.2023.3243274 2-s2.0-85149400604 1 71 857 869 en IEEE Transactions on Industrial Electronics © 2023 IEEE. All rights reserved. |
| spellingShingle | Engineering::Computer science and engineering Backstepping Control Large-Signal Stability Li, Xiangke Wang, Minghao Jiang, Wentao Dong, Chaoyu Xu, Zhao Wu, Xiaohua Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads |
| title | Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads |
| title_full | Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads |
| title_fullStr | Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads |
| title_full_unstemmed | Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads |
| title_short | Toward large-signal stabilization of interleaved floating multilevel boost converter-enabled high-power DC microgrids supplying constant power loads |
| title_sort | toward large signal stabilization of interleaved floating multilevel boost converter enabled high power dc microgrids supplying constant power loads |
| topic | Engineering::Computer science and engineering Backstepping Control Large-Signal Stability |
| url | https://hdl.handle.net/10356/172325 |
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