Garcia-Tirado J.Munoz-Durango D.Alvarez H.Botero-Castro H.2020-03-262020-03-2620194th IEEE Colombian Conference on Automatic Control: Automatic Control as Key Support of Industrial Productivity, CCAC 2019 - Proceedings9781538669624https://hdl.handle.net/20.500.12585/9039This paper addresses the problem of output voltage regulation for step-down converters (buck converters) for constant power load (CPL) applications. The model of the CPL corresponds to a hyperbolic constraint that introduces nonlinearities on the dynamical model. To regulate the voltage profile in this nonlinear load a passivity-based control (PBC) approach is proposed. The main advantage of the proposed control approach corresponds to the parametric independence of the controller, even if the CPL and the asymptotic stability in the sense of Lyapunov are unknown. Numerical results validate the proposed control approach in comparison to conventional PID controller. © 2019 IEEE.Recurso electrónicoapplication/pdfenghttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/conferenceObject10.1109/CCAC.2019.8920944Asymptotic stabilityConstant power loadsHamiltonian modelsOutput voltage regulationPassivity-based controlAsymptotic stabilityAutomationControllersProcess controlProductivityThree term control systemsVoltage regulatorsConstant power loadConstant power loads (CPL)Conventional pidHamiltonian modelsNumerical resultsOutput voltage regulationPassivity based controlStep-down converterDC-DC convertersinfo:eu-repo/semantics/restrictedAccessAtribución-NoComercial 4.0 InternacionalUniversidad Tecnológica de BolívarRepositorio UTB56919564100571914936483710497630057190661793