Robust gain-scheduled feedforward compensator with quasi-LPV model for buck converters in abrupt input voltage disturbances

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dc.contributor.authorİnci, Mustafa
dc.contributor.authorAltun, Yusuf
dc.date.accessioned2025-10-11T20:45:21Z
dc.date.available2025-10-11T20:45:21Z
dc.date.issued2025
dc.departmentDüzce Üniversitesien_US
dc.description.abstractThis paper presents a robust control strategy for DC-DC Buck converters operating under sudden input voltage disturbances. A novel quasi-Linear Parameter Varying (LPV) model is constructed by incorporating parasitic elements and expressing system dynamics as functions of the duty cycle to capture real-world dynamics more accurately. Based on this model, a gain-scheduled LPV feedforward compensator is synthesized using affine parameter-dependent Linear Matrix Inequalities (LMIs) to achieve H<inf>∞</inf> disturbance attenuation performance. The proposed feedforward compensator adapts continuously to duty cycle variations using only input voltage measurement, thereby simplifying implementation without compromising control performance. This feedforward structure is integrated with a generic feedback controller, enhancing the system's ability to reject abrupt input disturbances effectively. Experimental results demonstrate superior performance. Compared to a conventional PI controller, our proposed method achieves a 22.46 % higher Disturbance Rejection Ratio (DRR), 65 times higher Attenuation Ratio (AR), 83.49 dB higher Power Supply Rejection Ratio (PSRR), and an impressive 98.46 % reduction in output voltage ripple (from 38.235 % to just 0.588 %). Furthermore, it allows only 0.35 % of the disturbance to pass to the output (Disturbance Transmission Gain - DTG). Comparative analysis confirms this approach outperforms other state-of-the-art methods across all disturbance rejection metrics, delivering significantly higher AR and PSRR, and substantially lower voltage ripple. Our controller maintains a 99.65 % DRR even under a challenging 146.15 % input voltage disturbance, highlighting that it exhibits superior robustness. This makes it highly applicable for demanding power electronics systems in areas like renewable energy, electric vehicles, and industrial power converters. © 2025 Elsevier B.V., All rights reserved.en_US
dc.identifier.doi10.1016/j.isatra.2025.08.020
dc.identifier.issn0019-0578
dc.identifier.scopus2-s2.0-105014093222en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.isatra.2025.08.020
dc.identifier.urihttps://hdl.handle.net/20.500.12684/21301
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInternational Society of Automationen_US
dc.relation.ispartofISA Transactionsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKA_Scopus_20250911
dc.subjectBuck Converteren_US
dc.subjectDisturbance Rejectionen_US
dc.subjectFeedforwarden_US
dc.subjectGain-schedulingen_US
dc.subjectQuasi-lpven_US
dc.subjectSudden Voltage Disturbancesen_US
dc.subjectBuck Converteren_US
dc.subjectControllersen_US
dc.subjectElectric Invertersen_US
dc.subjectElectric Machine Controlen_US
dc.subjectElectric Power Systemsen_US
dc.subjectLinear Matrix Inequalitiesen_US
dc.subjectNonlinear Control Systemsen_US
dc.subjectRobust Controlen_US
dc.subjectRobustness (control Systems)en_US
dc.subjectBuck Convertersen_US
dc.subjectFeed Forwarden_US
dc.subjectFeed-forward Compensatoren_US
dc.subjectGain Schedulingen_US
dc.subjectInput Voltage Disturbancesen_US
dc.subjectLinear Parameter Varyingen_US
dc.subjectQuasi-linearen_US
dc.subjectQuasi-linear Parameter Varyingen_US
dc.subjectSudden Voltage Disturbanceen_US
dc.subjectVoltage Disturbancesen_US
dc.subjectDisturbance Rejectionen_US
dc.titleRobust gain-scheduled feedforward compensator with quasi-LPV model for buck converters in abrupt input voltage disturbancesen_US
dc.typeArticleen_US

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