Related Experiment Video
Updated: Oct 4, 2025

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
Published on: February 14, 2025
A robust nonlinear PI-type controller for the DC-DC buck-boost power converter
Mizraim Martinez-Lopez1, Javier Moreno-Valenzuela1, Wei He2
1Instituto Politécnico Nacional-CITEDI, Av. Instituto Politécnico Nacional 1310, Col. Nueva Tijuana, Tijuana, Baja California, 22435, Mexico.
Abstract:
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.
Related Concept Videos
PI Controller: Design
Time and frequency -Domain Interpretation of PI Control
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
PD Controller: Design
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
PID Controller
Time-Domain Interpretation of PD Control
Consider the example of control of motor torque. Initially, a positive...
Frequency-Domain Interpretation of PD Control
The proportional control gain, combined with the...

