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

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 predefine...

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Bibliographic Details
Published in:IEEE transactions on control systems technology 2014-09, Vol.22 (5), p.2016-2023
Main Authors: Kim, Seok-Kyoon, Park, Chang Reung, Kim, Jung-Su, Lee, Young I.
Format: Article
Language:English
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
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Summary: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.
ISSN:1063-6536
1558-0865
DOI:10.1109/TCST.2013.2296508