TY - JOUR
T1 - Analysis and Design of a Controller for an Input-Saturated DC-DC Buck Power Converter
AU - Garcia-Alarcon, Octavio
AU - Moreno-Valenzuela, Javier
N1 - Publisher Copyright:
© 2013 IEEE.
PY - 2019
Y1 - 2019
N2 - In this paper, a novel controller for an input-saturated direct current to direct current (DC-DC) buck power converter has been proposed. The control scheme guarantees global asymptotic stability, even though the input to the power converter is affected by a hard saturation nonlinearity that results from the fact that in practice the duty cycle can only take continuous values between zero and one. Specifically, asymptotic stability is ensured by using a special quadratic-Type Lyapunov function and LaSalle's invariance principle. In addition, to prevent inductor current's noisy measurements, an observer is proposed together with the proposed control law. Stability is also discussed rigorously for the resulting observer-based scheme. The real-Time experimental comparisons with respect to a known approach are presented. Better performance is obtained with the novel observer-based controller.
AB - In this paper, a novel controller for an input-saturated direct current to direct current (DC-DC) buck power converter has been proposed. The control scheme guarantees global asymptotic stability, even though the input to the power converter is affected by a hard saturation nonlinearity that results from the fact that in practice the duty cycle can only take continuous values between zero and one. Specifically, asymptotic stability is ensured by using a special quadratic-Type Lyapunov function and LaSalle's invariance principle. In addition, to prevent inductor current's noisy measurements, an observer is proposed together with the proposed control law. Stability is also discussed rigorously for the resulting observer-based scheme. The real-Time experimental comparisons with respect to a known approach are presented. Better performance is obtained with the novel observer-based controller.
KW - Buck power converter
KW - Lyapunov's stability
KW - input saturation
KW - observer-based controller
KW - real-Time experiments
UR - http://www.scopus.com/inward/record.url?scp=85065482529&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2019.2912858
DO - 10.1109/ACCESS.2019.2912858
M3 - Artículo
AN - SCOPUS:85065482529
SN - 2169-3536
VL - 7
SP - 54261
EP - 54272
JO - IEEE Access
JF - IEEE Access
M1 - 8695720
ER -