Zhang, Xiaoduo;
Zhang, Zhize;
Sun, Jiankun;
Yan, Yunda;
Wang, Xiangyu;
Tang, Xianlun;
Wang, Huiming;
(2025)
A current-constrained finite-time disturbance rejection control scheme for buck converter.
In: Wang, Hai, (ed.)
Proceedings of the First International Conference on Advanced Robotics, Control, and Artificial Intelligence.
Springer Singapore: Perth, Australia.
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Abstract
This paper is devoted to the voltage regulation of a DC-DC buck converter within current constraints. Existing methods often fail to maintain adequate dynamic performance while adhering to this constraint. At the same time, the control performance is significantly degraded due to disturbances such as parameter uncertainties, input voltage fluctuations, and load impedance variations. In order to solve these problems, a control design scheme based on a gain function is proposed by skillfully combining finite time disturbance observation and finite time control technology, which ensure that the inductor current is kept within the safe range to prevent hardware damage. The whole closed-loop system is guaranteed to be finite-time stable. The synthesized results from simulation and experimental data show that the proposed control strategy is superior to the conventional methods regarding current constraint, dynamic performance and disturbance rejection.
| Type: | Proceedings paper |
|---|---|
| Title: | A current-constrained finite-time disturbance rejection control scheme for buck converter |
| Event: | 2024 International Conference on Advanced Robotics, Control, and Artificial Intelligence |
| Location: | Perth, Australia |
| Dates: | 9 Dec 2024 - 12 Dec 2024 |
| DOI: | 10.1007/978-981-96-5373-7 |
| Publisher version: | https://doi.org/10.1007/978-981-96-5373-7 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | finite-time control, current constraint, finite-time disturbance observer, mismatched disturbance, DC-DC buck converter. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10197463 |
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