PBC approach applied on a DC-DC step-down converter for providing service to CPLs
Fecha
2019Registro en:
4th IEEE Colombian Conference on Automatic Control: Automatic Control as Key Support of Industrial Productivity, CCAC 2019 - Proceedings
9781538669624
10.1109/CCAC.2019.8920944
Universidad Tecnológica de Bolívar
Repositorio UTB
56919564100
57191493648
37104976300
57190661793
Autor
Montoya O.D.
Gil-González, Walter
Serra F.M.
Magaldi G.
Resumen
This 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.