A Stabilizing Model Predictive Controller for Voltage Regulation of a DC/DC Boost Converter

• Published in: IEEE transactions on control systems technology Vol. 22; no. 5; pp. 2016 - 2023
• Main Authors: Kim, Seok-Kyoon, Park, Chang Reung, Kim, Jung-Su, Lee, Young I.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.09.2014; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bilinear model; Cascade control; Converters; Cost function; DC-DC power converters; dc/dc converter; Direct current; Electric potential; global stability; Inductors; input/state constraints; Linear matrix inequalities; Mathematical models; model predictive control (MPC); Proportional integral; Steady-state; Strategy; Voltage; Voltage control; global stability; dc/dc converter; input/state constraints; Bilinear model; cascade control; model predictive control (MPC)
• ISSN: 1063-6536; 1558-0865
• DOI: 10.1109/TCST.2013.2296508

This brief proposes a cascade voltage control strategy for the dc/dc converter utilizing a model predictive control (MPC) in the inner loop. The proposed MPC minimizes a cost function at each time step in the receding horizon manner and the corresponding optimal solution is obtained from a predefined function not relying on a numeric algorithm. It is shown that the MPC makes the capacitor voltage and the inductor current globally convergent in the presence of input constraints. State constraints also can be taken into account in the proposed MPC. Following the conventional cascade voltage control scheme, a Proportional-Integral (PI) controller is adopted in the outer loop. The experimental results show that the closed-loop performance is superior to the classical cascade PI control scheme.