A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped Circuits
In this paper, in order to study the relationship among different converters, a novel concept—modular high step-up converter—is proposed, which is composed of one basic converter, one N<sub>c</sub> step-up cell (N<sub>c</sub>-SUC), and one M-source passi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9405661/ |
| _version_ | 1831539661640564736 |
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| author | Jian Ai Mingyao Lin Hongchen Liu Pat Wheeler |
| author_facet | Jian Ai Mingyao Lin Hongchen Liu Pat Wheeler |
| author_sort | Jian Ai |
| collection | DOAJ |
| description | In this paper, in order to study the relationship among different converters, a novel concept—modular high step-up converter—is proposed, which is composed of one basic converter, one N<sub>c</sub> step-up cell (N<sub>c</sub>-SUC), and one M-source passive lossless clamped circuit (PLCC). N<sub>c</sub> means the number of capacitors in step-up cell and M-source represents the number of capacitors in PLCC. N<sub>c</sub>-SUCs composed of many voltage lift cells (VLCs) and many constant voltage lift cells (CVLCs) are proposed and their general voltage gain formula is deduced. Each type of N<sub>c</sub>-SUCs has N<sub>c</sub>+1 different structures and the same voltage gain formula. Different N<sub>c</sub>-SUCs can converse each other by adding or removing VLC and CVLC. Then, the general voltage gain formula of the proposed converters with N<sub>c</sub>-SUCs is deduced, which is an additive combination of the voltage gain of N<sub>c</sub>-SUCs and basic converter. Besides, a novel clamp circuit called M-source PLCC which is consisted of M+1 capacitors and one diode is presented. M capacitors of the M-source PLCC come from the N<sub>c</sub>-SUC of converter, so only one capacitor and one diode are added. In comparison with classical PLCC, it makes the converters with N<sub>c</sub>-SUCs not only possible to recycle the energy stored in the leakage inductor, but also further reduce the voltage stresses of the switch and the output capacitor, further improve the voltage gain, and even realize a three-level converter. Compared with the classical PLCC, the cost in M-source PLCC is unchanged. As M increases, the number and the variety of M-source PLCCs will also increase. Therefore, different M-source PLCCs can be chosen for the same converter to recycle the energy stored in the leakage inductor. If adopting converse thinking, based on the general voltage gain formula, removing basic converter and M-source PLCC, then, the number and the combination way of VLC and CVLC of different N<sub>c</sub>-SUCs will expose the relationship among different high step-up converter to researcher. Finally, an improved converter based on 3-SUC as a representative of the deduced converters is proposed and analyzed in detail in the laboratory to verify performances. |
| first_indexed | 2024-12-16T23:45:03Z |
| format | Article |
| id | doaj.art-868a077b814a454599fdb5270fe2aebd |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T23:45:03Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-868a077b814a454599fdb5270fe2aebd2022-12-21T22:11:31ZengIEEEIEEE Access2169-35362021-01-019659476596610.1109/ACCESS.2021.30734169405661A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped CircuitsJian Ai0https://orcid.org/0000-0001-9734-3824Mingyao Lin1https://orcid.org/0000-0002-0477-3997Hongchen Liu2https://orcid.org/0000-0003-1866-334XPat Wheeler3https://orcid.org/0000-0003-0307-581XSchool of Electrical Engineering, Southeast University, Nanjing, ChinaSchool of Electrical Engineering, Southeast University, Nanjing, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, ChinaDepartment of Electrical and Electronic Engineering, University of Nottingham, Nottingham, U.K.In this paper, in order to study the relationship among different converters, a novel concept—modular high step-up converter—is proposed, which is composed of one basic converter, one N<sub>c</sub> step-up cell (N<sub>c</sub>-SUC), and one M-source passive lossless clamped circuit (PLCC). N<sub>c</sub> means the number of capacitors in step-up cell and M-source represents the number of capacitors in PLCC. N<sub>c</sub>-SUCs composed of many voltage lift cells (VLCs) and many constant voltage lift cells (CVLCs) are proposed and their general voltage gain formula is deduced. Each type of N<sub>c</sub>-SUCs has N<sub>c</sub>+1 different structures and the same voltage gain formula. Different N<sub>c</sub>-SUCs can converse each other by adding or removing VLC and CVLC. Then, the general voltage gain formula of the proposed converters with N<sub>c</sub>-SUCs is deduced, which is an additive combination of the voltage gain of N<sub>c</sub>-SUCs and basic converter. Besides, a novel clamp circuit called M-source PLCC which is consisted of M+1 capacitors and one diode is presented. M capacitors of the M-source PLCC come from the N<sub>c</sub>-SUC of converter, so only one capacitor and one diode are added. In comparison with classical PLCC, it makes the converters with N<sub>c</sub>-SUCs not only possible to recycle the energy stored in the leakage inductor, but also further reduce the voltage stresses of the switch and the output capacitor, further improve the voltage gain, and even realize a three-level converter. Compared with the classical PLCC, the cost in M-source PLCC is unchanged. As M increases, the number and the variety of M-source PLCCs will also increase. Therefore, different M-source PLCCs can be chosen for the same converter to recycle the energy stored in the leakage inductor. If adopting converse thinking, based on the general voltage gain formula, removing basic converter and M-source PLCC, then, the number and the combination way of VLC and CVLC of different N<sub>c</sub>-SUCs will expose the relationship among different high step-up converter to researcher. Finally, an improved converter based on 3-SUC as a representative of the deduced converters is proposed and analyzed in detail in the laboratory to verify performances.https://ieeexplore.ieee.org/document/9405661/Coupled inductorasymmetric voltage multiplier cellclamped circuitdc-dc converters |
| spellingShingle | Jian Ai Mingyao Lin Hongchen Liu Pat Wheeler A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped Circuits IEEE Access Coupled inductor asymmetric voltage multiplier cell clamped circuit dc-dc converters |
| title | A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped Circuits |
| title_full | A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped Circuits |
| title_fullStr | A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped Circuits |
| title_full_unstemmed | A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped Circuits |
| title_short | A Family of High Step–Up DC–DC Converters With N<sub>c</sub> Step-Up Cells and M–Source Clamped Circuits |
| title_sort | family of high step x2013 up dc x2013 dc converters with n sub c sub step up cells and m x2013 source clamped circuits |
| topic | Coupled inductor asymmetric voltage multiplier cell clamped circuit dc-dc converters |
| url | https://ieeexplore.ieee.org/document/9405661/ |
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