An easy to implement and robust design control method dedicated to multi-cell converters using inter cell transformers
| Autor: | Khaled Tamizi, Eric Laboure, Olivier Béthoux |
|---|---|
| Přispěvatelé: | Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
General Computer Science
Computer science Diagonal MIMO Robust control 010103 numerical & computational mathematics 02 engineering and technology Standard solution 01 natural sciences Theoretical Computer Science law.invention [SPI.AUTO]Engineering Sciences [physics]/Automatic law Full state feedback 0202 electrical engineering electronic engineering information engineering Multicell converter 0101 mathematics Transformer Numerical Analysis InterCell Transformer (ICT) Applied Mathematics [SPI.NRJ]Engineering Sciences [physics]/Electric power Control engineering Converters Optimal control Linear quadratic regulator (LQR) 13. Climate action Modeling and Simulation 020201 artificial intelligence & image processing Multi input multi output system (MIMO) |
| Zdroj: | Mathematics and Computers in Simulation Mathematics and Computers in Simulation, Elsevier, 2020, 167, pp.461-477. ⟨10.1016/j.matcom.2019.02.004⟩ |
| ISSN: | 0378-4754 |
| DOI: | 10.1016/j.matcom.2019.02.004⟩ |
| Popis: | International audience; Parallel multi-cell converters using inter-cell transformers are real multi-input multi-output systems, making their control challenging and possibly requiring increased embedded computing power in the control architecture. The challenge of the current study is to design a control algorithm as simple as possible, in terms of settings and implementation, while meeting standard specification. The state-space representation of multi-cell converters permits to define a full state feedback. Such Multi-Input Multi-Output (MIMO) systems have numerous tuning parameters which enable various ways to tackle the control specifications. Among the specific approaches, both total decoupling and optimal control based on quadratic cost and objective functions are addressed thoroughly and consistently. The studied case is a 3-cell parallel converter for which various settings of the state feedback are considered and analyzed by simulation Linear-quadratic regulator design reveals the best compromise between variables tracking precision and robustness towards system parameters and load variation. Furthermore it is easy to implement utilizing few non-zero setting coefficients. Specifically the feedback gain matrix associated to the integral terms is almost diagonal: this natural decoupling makes it extremely simple to efficiently implement an anti-windup algorithm. This is an important result since until now, the standard solution is mostly based on decoupling strategies. Among other drawbacks, this latter approach proves to be much more sensitive to parameter uncertainties. |
| Databáze: | OpenAIRE |
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