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Multimode Smooth Transition Technique for Three-Level Cascaded Noninverting Buck-Boost DC-DC Converter
Zhu, Zhen1; Ma, Fujun1; Lin, Liheng1; Wang, Lei1; Kuang, Dexing1; Xu, Qianming1; Wong, Man Chung2,3
2021-12-01
Source PublicationIEEE Transactions on Power Electronics
ISSN0885-8993
Volume36Issue:12Pages:14409-14419
Abstract

In this article, a new three-level cascaded noninverting buck-boost converter (TL-CNIBB) is proposed, which has a superior adaptation for a wide-range voltage input of renewable energy access. Firstly, the operation principle is analyzed for TL-CNIBB and it is mainly divided into four modes, namely buck mode with the voltage ratio below or above 0.5, boost mode with the voltage ratio below or above 2. Due to multilevel and multimode features, several fundamental issues are required to be settled, such as a dead zone between buck mode and boost mode, capacitor voltage unbalance on both sides, and subharmonics at the edge of modes. For dead zone and capacitor voltage balance problems, a systematic control strategy is proposed, and four kinds of smooth transition technologies are proposed to deal with different cases. Furthermore, to avoid the chattering and subharmonics at the edge of modes, a modified hysteretic transition method is proposed. Finally, a prototype of TL-CNIBB system is constructed, and the experiments are carried out to verify the performance of the proposed system with high viability and flexibility.

KeywordDc-dc Power Conversion Multilevel Systems Smoothing Methods
DOI10.1109/TPEL.2021.3086812
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000686884300089
Scopus ID2-s2.0-85111050358
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorMa, Fujun
Affiliation1.College of Electrical and Information Engineering, Hunan University, Changsha, 410082, China
2.State Key Laboratory of Internet of Things for Smart City, University of Macau, Macao, Macao
3.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macao, 999078, Macao
Recommended Citation
GB/T 7714
Zhu, Zhen,Ma, Fujun,Lin, Liheng,et al. Multimode Smooth Transition Technique for Three-Level Cascaded Noninverting Buck-Boost DC-DC Converter[J]. IEEE Transactions on Power Electronics,2021,36(12):14409-14419.
APA Zhu, Zhen,Ma, Fujun,Lin, Liheng,Wang, Lei,Kuang, Dexing,Xu, Qianming,&Wong, Man Chung.(2021).Multimode Smooth Transition Technique for Three-Level Cascaded Noninverting Buck-Boost DC-DC Converter.IEEE Transactions on Power Electronics,36(12),14409-14419.
MLA Zhu, Zhen,et al."Multimode Smooth Transition Technique for Three-Level Cascaded Noninverting Buck-Boost DC-DC Converter".IEEE Transactions on Power Electronics 36.12(2021):14409-14419.
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