Journal
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
Volume 22, Issue 5, Pages 2016-2023Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCST.2013.2296508
Keywords
Bilinear model; cascade control; dc/dc converter; global stability; input/state constraints; model predictive control (MPC)
Funding
- National Research Foundation of Korea through the Korean government [2010-0022103]
- National Research Foundation of Korea [2010-0022103] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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