Journal ArticleDOI
Finite-Set Model-Predictive Control Strategies for a 3L-NPC Inverter Operating With Fixed Switching Frequency
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TLDR
Two finite-set model-predictive control methodologies for a grid-connected three-level neutral-point-clamped converter are investigated and show a good performance, in steady-state and transient response, with a total harmonic distortion lower than $\text{2}\%$ for the currents supplied to the grid.Abstract:
In this paper, finite-set model-predictive control (FS-MPC) methodologies for a grid-connected three-level neutral-point-clamped converter are investigated. The proposed control strategies produce fixed switching frequency, maintaining all the advantages of predictive control such as fast dynamic response, inclusion of nonlinearities and restrictions, and multivariable control using a single control loop. The first of the proposed FS-MPC strategies is based on a multiobjective cost function, designed to regulate both the inverter currents and the balancing of the dc-link capacitor voltages. The second FS-MPC strategy is derived from the first one, and it is based on a cost function that regulates only the grid current, with the balancing of the capacitor voltages being realized by controlling the duty cycles of the redundant vectors. The proposed control systems are experimentally validated using a 5-kW prototype. The experimental results show a good performance for both strategies, in steady-state and transient response, with a total harmonic distortion lower than $\text{2}\%$ for the currents supplied to the grid.read more
Citations
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Journal ArticleDOI
Guidelines for the Design of Finite Control Set Model Predictive Controllers
Petros Karamanakos,Tobias Geyer +1 more
TL;DR: This article discusses and analyzes the factors that affect the closed-loop performance of FCS-MPC and design guidelines are provided that help to maximize the system performance.
Journal ArticleDOI
Model Predictive Control of Power Electronic Systems: Methods, Results, and Challenges
TL;DR: This survey paper highlights the most relevant MPC techniques for power electronic systems and assesses the schemes in question in terms of design, and computational complexity, along with their performance, and applicability depending on the power electronic system at hand.
Journal ArticleDOI
Distributed Control Strategies for Microgrids: An Overview
Enrique Espina,Jacqueline Llanos,Claudio Burgos-Mellado,Roberto Cardenas-Dobson,Manuel Martinez-Gomez,Doris Saez +5 more
TL;DR: An overview of the state-of-the-art of distributed cooperative control systems for isolated microgrids is presented and Protocols for cooperative control such as linear consensus, heterogeneous consensus and finite-time consensus are discussed and reviewed.
Journal ArticleDOI
Computationally Efficient Cascaded Optimal Switching Sequence MPC for Grid-Connected Three-Level NPC Converters
Andres Mora,Roberto Cardenas-Dobson,Ricardo P. Aguilera,Alejandro Angulo,Felipe Donoso,Jose Rodriguez +5 more
TL;DR: A model predictive control strategy based on optimal switching sequence concepts is proposed for a grid-connected three-level neutral-point clamped converter that optimally controls both the grid currents and the capacitor voltages even during disturbances and large step changes in the references.
Journal ArticleDOI
Adaptive condition predictive-fuzzy PID optimal control of start-up process for pumped storage unit at low head area
TL;DR: Results indicate that the proposed method can effectively avoid the deep running of the unit into the ‘S’ characteristic area compared with traditional ones, and strong robustness of ACP-FPID is testified when PSU disturbed by mechanical factors.
References
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Convex Optimization
Stephen Boyd,Lieven Vandenberghe +1 more
TL;DR: In this article, the focus is on recognizing convex optimization problems and then finding the most appropriate technique for solving them, and a comprehensive introduction to the subject is given. But the focus of this book is not on the optimization problem itself, but on the problem of finding the appropriate technique to solve it.
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TL;DR: The p-q theory in three-phase, four-wire Shunt Active Filters as discussed by the authors has been applied to power flow control in power electronics equipment and has been shown to be useful in many applications.
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High-Power Converters and AC Drives
TL;DR: In this article, the authors present a model for high-power switchings with SCR rectifiers and demonstrate how to use SCR Rectifiers to control high power switchings.
Journal ArticleDOI
Model Predictive Control—A Simple and Powerful Method to Control Power Converters
TL;DR: The feasibility and great potential of FCS-MPC due to present-day signal-processing capabilities, particularly for power systems with a reduced number of switching states and more complex operating principles, such as matrix converters are found.