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Output voltage tracking control of DC–DC boost converters with overcurrent protection

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Abstract

This paper deals with the output voltage tracking problem in DC-DC boost converters under the single-loop structure, emphasizing the need for overcurrent protection. Overcurrent protection is considered as a state constraint that is applied to the inductor current. A novel current-constrained controller is proposed by designing a special dynamic controller gain that is associated with the inductor current. Unlike existing nonlinear control methods capable of implementing state constraints, the controller introduced in this paper has a relatively simple structure that simplifies execution and reduces computational complexity. In contrast to methods that limit the initial states of the system, such as invariant set theory, the proposed method expands the range of the admissible set of the initial states. Experimental results demonstrate that, under the premise of satisfying current constraints, the proposed controller has better dynamic performance and robustness when compared to the nominal controllers that do not take current constraints into account.

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The data are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSFC: No. 62373099, 62173221, 62025302) the Open Fund of Jiangsu Engineering Technology Center for Energy Storage Conversion and Application (No. NY80-23-023), and the Key R & D Plan of Jiangsu Province (No. BE2020082-4).

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Authors and Affiliations

  1. Changsha Intelligent Driving Institute, Changsha, China

    Tianliang Guo

  2. School of Automation, Southeast University, Nanjing, China

    Saijin Huang & Xiangyu Wang

  3. Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Nanjing, China

    Saijin Huang & Xiangyu Wang

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  1. Tianliang Guo
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Correspondence to Xiangyu Wang.

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Guo, T., Huang, S. & Wang, X. Output voltage tracking control of DC–DC boost converters with overcurrent protection. J. Power Electron. (2024). https://doi.org/10.1007/s43236-024-00815-3

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