Finite control set model predictive current control of the Coupled-Inductor Buck–Boost DC–DC Switching Converter

Cáceres, P Arenales; Restrepo, Carlos; Baier, Carlos R.; Muñoz, Javier

doi:10.1109/ica-acca.2018.8609723

Cited by 2 publications

(1 citation statement)

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“…This approach is referred to as finite-control-set MPC (FCS-MPC) and it is the favored and widely researched MPC method in academia [3]. In [4], FCS-MPC is implemented on a coupled inductor buck boost converter, where it improves the current tracking performance and reduces the converter power losses. In [5], a boost converter is considered, and FCS-MPC is shown to eliminate non-minimum phase behavior for output voltage control.…”

Section: Introductionmentioning

confidence: 99%

On the Steady-State Behavior of Finite-Control-Set MPC with an Application to High-Precision Power Amplifiers

Xü¹,

Damsma²,

Lazăr³

2022

Preprint

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Motivated by increasing precision requirements for switched power amplifiers, this paper addresses the problem of model predictive control (MPC) design for discrete-time linear systems with a finite control set (FCS). Typically, existing solutions for FCS-MPC penalize the output tracking error and the control input rate of change, which can lead to arbitrary switching among the available discrete control inputs and unpredictable steady-state behavior. To improve the steadystate behavior of FCS-MPC, in this paper we design a cost function that penalizes the tracking error with respect to a state and input steady-state limit cycle. We prove that if a suitable terminal cost is added to the FCS-MPC algorithm convergence to the limit cycle is ensured. The developed methodology is validated in direct switching control of a power amplifier for high-precision motion systems, where it significantly improves the steady-state output current ripple.

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Section: Introductionmentioning

confidence: 99%