MPC for nonlinear systems: A comparative review of discretization methods

Sánchez, G.; Murillo, Marina Hebe; Genzelis, Lucas; Deniz, Nestor N.; Giovanini, Leonardo

doi:10.23919/rpic.2017.8214333

Cited by 8 publications

(1 citation statement)

References 9 publications

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“…Once the dynamic model of the converter is obtained, it is necessary to find its discrete equivalent [33]. This is required to program the predictive algorithm and to be able to evaluate each valid state of the converter discretely.…”

Section: Ac Link Dynamic Modelmentioning

confidence: 99%

Improved Predictive Control for an Asymmetric Multilevel Converter for Photovoltaic Energy

et al. 2020

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This article proposes a 27-level asymmetric cascade H-bridge multilevel topology for photovoltaic applications, which considers a predictive control strategy that allows minimization of the commutations of the converter. This proposal ensures a highly sinusoidal and stable photovoltaic injection when there are solar irradiance disturbances, generating a low distortion in the current waveform and low switching losses. To validate the performance of the control and the proposed topology, the dynamic model of the alternating current (AC) and direct current (DC) side system is first obtained, which is checked by computational simulations. Subsequently, the implementation of a master–slave control is carried out, focused on the control of DC voltage and AC current. The proposal is simulated, and the total harmonic distortion (THD) is obtained in the voltage and current waveforms. Undesired commutations, typical of the predictive control, are eliminated in the AC voltage waveform, and a proper DC voltage tracking is achieved for the high-power cell. In order to demonstrate the performance of the proposed control strategy, a low-power proof-of-concept prototype is implemented, in which the energy is injected to the grid, under the event of solar irradiance disturbances (with DC control).Then, the undesired switching in the main cell is eliminated, generating THDs in the voltage and current signal of 7.76% and 2.65%, respectively.

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Section: Ac Link Dynamic Modelmentioning

confidence: 99%