A Novel Buck-boost Converter and Its Control Strategy for New Energy Power Generation
[1]LUO Peng,CHEN Guanghao,YANG Donghong,et al.A Novel Buck-boost Converter and Its Control Strategy for New Energy Power Generation[J].Journal of Zhengzhou University (Engineering Science),2024,45(02):97-105.[doi:10.13705/j.issn.1671-6833.2023.05.016]
Copy
Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
45
Number of periods:
2024 02
Page number:
97-105
Column:
Public date:
2024-03-06
- Title:
- A Novel Buck-boost Converter and Its Control Strategy for New Energy Power Generation
- Keywords:
- coupled inductor; buck-boost converter; small signal model; PI controller; feedforward control
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2023.05.016
- Abstract:
- To solve the problem that the output voltage of the new energy power generation device varied greatly and it was difficult to realize energy storage, a novel single-switch coupled buck-boost converter based on PI controller and feed-forward control was presented. The voltage gain could be adjusted by the turns ratio of the coupled inductor, and the voltage stress on the power switch was suppressed by the passive clamped circuit with recycled leakage inductor energy. Compared with traditional buck-boost converter, the proposed converter had the advantages of wider voltage conversion ratio, continuous input current, and low voltage stress on power switch. Combing PI controller with feedforward control strategy, superior input transient response of the converter during the whole input voltage range is obtained. The operating principles and steady-state characteristics of proposed converter were analyzed and derived in detail, respectively, and the performances were compared with other single-tube buck-boost converters. The small-signal model was derived, and the correctness of PI parameter design was verified by bode diagram. The design process of PI controller combined with feedforward control strategy was analyzed. Finally, an experimental prototype with a rated power of 100 W, 20 V to 60 V input, and 48 V output was built to verify the performance of the proposed converter in boost mode and buck mode, and the feasibility of PI controller combined with feed-forward control strategy. The measured maximum efficiencies with the boost and buck modes were 97. 08% and 97. 10%, respectively.
- References:
-
[1] 周强, 汪宁渤, 何世恩, 等. 高弃风弃光背景下中国新能源发展总结及前景探究[J]. 电力系统保护与控制, 2017, 45(10): 146-154.ZHOU Q, WANG N B, HE S E, et al. Summary and prospect of China′s new energy development under the background of high abandoned new energy power[J]. Power System Protection and Control, 2017, 45(10): 146-154.[2] LIU L B, WANG Z, WANG Y, et al. Optimizing wind/solar combinations at finer scales to mitigate renewable energy variability in China[J]. Renewable and Sustainable Energy Reviews, 2020, 132: 110151.[3] BANAEI M R, BONAB H A F. A novel structure for single-switch nonisolated transformerless buck-boost DC-DC converter[J]. IEEE Transactions on Industrial Electronics, 2017, 64(1): 198-205.[4] MIAO S, WANG F Q, MA X K. A new transformerless buck-boost converter with positive output voltage[J]. IEEE Transactions on Industrial Electronics, 2016, 63(5): 2965-2975.[5] BANAEI M R, BONAB H A F. A high efficiency nonisolated buck-boost converter based on ZETA converter[J]. IEEE Transactions on Industrial Electronics, 2020, 67(3): 1991-1998.[6] LI J, LIU J J. A novel buck-boost converter with low electric stress on components[J]. IEEE Transactions on Industrial Electronics, 2019, 66(4): 2703-2713.[7] 李梦娇, 彭继慎, 孙瑄瑨. 具有高增益低输出电流纹波的Buck-Boost变换器[J]. 辽宁工程技术大学学报(自然科学版), 2022, 41(4): 372-378.LI M J, PENG J S, SUN X J. Buck-boost converter with high gain and low output current ripple[J]. Journal of Liaoning Technical University (Natural Science), 2022, 41(4): 372-378.[8] BAHRAMI H, FARHANGI S, IMAN-EINI H, et al. A new interleaved coupled-inductor nonisolated soft-switching bidirectional DC-DC converter with high voltage gain ratio[J]. IEEE Transactions on Industrial Electronics, 2018, 65(7): 5529-5538.[9] HSIEH Y C, CHENG H L, CHANG E C, et al. A soft-switching interleaved buck-boost LED driver with coupled inductor[J]. IEEE Transactions on Power Electronics, 2022, 37(1): 577-587.[10] HASANPOUR S, BAGHRAMIAN A, MOJALLALI H. Analysis and modeling of a new coupled-inductor buck-boost DC-DC converter for renewable energy applications[J]. IEEE Transactions on Power Electronics, 2020, 35(8): 8088-8101.[11] 荣德生, 孙瑄瑨. 高增益耦合电感组合Buck-Boost-Zeta变换器[J]. 中国电机工程学报, 2020, 40(14): 4590-4601.RONG D S, SUN X J. High gain coupled inductance combination Buck-Boost-Zeta converter[J]. Proceedings of the CSEE, 2020, 40(14): 4590-4601.[12] ZHANG N, ZHANG G D, SEE K W, et al. A single-switch quadratic buck-boost converter with continuous input port current and continuous output port current[J]. IEEE Transactions on Power Electronics, 2018, 33(5): 4157-4166.[13] KUMAR M A B, KRISHNASAMY V. A single-switch continuous input current buck-boost converter with noninverted output voltage[J]. IEEE Transactions on Power Electronics, 2023, 38(2): 2181-2190.[14] LI X, LIU Y S, XUE Y S. Four-switch buck-boost converter based on model predictive control with smooth mode transition capability[J]. IEEE Transactions on Industrial Electronics, 2021, 68(10): 9058-9069.[15] YANG Y, ZHONG W X, KIRATIPONGVOOT S, et al. Dynamic improvement of series-series compensated wireless power transfer systems using discrete sliding mode control[J]. IEEE Transactions on Power Electronics, 2018, 33(7): 6351-6360.[16] 周坤雨, 岳宁宁, 邱柯妮. 自供能系统中可配置DC-DC转换器的设计[J]. 郑州大学学报(工学版), 2021, 42(4):70-76, 97.ZHOU K Y, YUE N N, QIU K N. A reconfigurable DC-DC converter design for energy-harvesting system[J]. Journal of Zhengzhou University (Engineering Science), 2021, 42(4):70-76, 97.[17] SANKARANARAYANAN V, GAO Y C, ERICKSON R W, et al. Online efficiency optimization of a closed-loop controlled SiC-based bidirectional boost converter[J]. IEEE Transactions on Power Electronics, 2022, 37(4): 4008-4021.
- Similar References:
Memo
-
Last Update:
2024-03-08