Direct Voltage Control of DC-DC Boost Converters Using Enumeration-Based Model Predictive Control

• Published in: IEEE transactions on power electronics Vol. 29; no. 2; pp. 968 - 978
• Main Authors: Karamanakos, Petros, Geyer, Tobias, Manias, Stefanos
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.02.2014; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Circuit properties; Controllers; Converters; DC-DC boost converter; Electric currents; Electric potential; Electric power; Electric, optical and optoelectronic circuits; Electrical engineering. Electrical power engineering; Electrical equipment; Electrical machines; Electronic circuits; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; hybrid system; Inductors; Kalman filters; Load modeling; Mathematical model; Mathematical models; model predictive control (MPC); optimal control; Predictive control; Predictive models; Regulation and control; Robustness; Signal convertors; Simulation; State estimation; Strategy; Switches; Voltage; Voltage control; Magnetooptical effect; Parameter estimation; Control synthesis; Voltage control; DC-DC boost converter; Implementation; hybrid system; Discontinuous mode; Regulation(control); Output voltage; Hybrid model; State estimation; Voltage mode; Predictive control; Direct digital control; Direct current convertor; optimal control; Switching; model predictive control (MPC); Current control; Control loop; Voltage standard; Non linear model; Discrete time; Objective function
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2013.2256370

This paper presents a model predictive control (MPC) approach for dc-dc boost converters. A discrete-time switched nonlinear (hybrid) model of the converter is derived, which captures both the continuous and the discontinuous conduction mode. The controller synthesis is achieved by formulating an objective function that is to be minimized subject to the model dynamics. The proposed MPC strategy, utilized as a voltage-mode controller, achieves regulation of the output voltage to its reference, without requiring a subsequent current control loop. Furthermore, a state estimation scheme is implemented that addresses load uncertainties and model mismatches. Simulation and experimental results are provided to demonstrate the merits of the proposed control methodology, which include a fast transient response and a high degree of robustness.