Journal
ISA TRANSACTIONS
Volume 129, Issue -, Pages 687-700Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2022.01.016
Keywords
DC-DC buck-boost power converter; Lyapunov stability; LaSalle's invariance principle; Voltage regulation; Real-time experiment
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Funding
- CONACyT Project [A1-S-24762]
- National Natural Science Foundation (NNSF) of China [61903196]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [19KJB510042]
- Natural Science Foundation of Jiangsu Province of China [BK20190773]
- Startup Foundation for Introducing Talent of NUIST [2018r084]
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In this study, a novel Lyapunov function-based robust nonlinear proportional-integral (PI)-type controller is proposed for regulating the output voltage of a DC-DC inverting buck-boost power converter operating in continuous conduction mode (CCM). The control scheme ensures global asymptotic stability of the closed-loop system even with parameter uncertainty. The closed-loop trajectories are analyzed using the Lyapunov method and LaSalle's invariance principle. The proposed scheme demonstrates robustness to additive disturbances and provides simple gain tuning guidelines. Real-time experiments support the theoretical results, and experimental tests show that the proposed PI-type control design performs consistently well under line and load disturbances.
In this study, a novel Lyapunov function-based robust nonlinear proportional-integral (PI)-type controller for regulating the output voltage of the direct current to direct current (DC-DC) inverting buck-boost power converter operating in continuous conduction mode (CCM) is presented. The control scheme guarantees global asymptotic stability of the closed-loop system even in case of parameter uncertainty. The analysis of the closed-loop trajectories is carried out using Lyapunov method and LaSalle's invariance principle. Robustness to additive disturbances is shown and simple gain tuning guidelines are given. Real-time experiments support the theoretical results. Experimental tests are presented where the proposed PI-type control design is compared with other PI-type schemes found in the literature. The proposed scheme presents very good consistent performance under line and load disturbance. (c) 2022 ISA. Published by Elsevier Ltd. All rights reserved.
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