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Modulated Optimal Model Predictive Control for Variable Speed Gen-Sets

Bigarelli, L.; Lidozzi, A.; Di Benedetto, M.; Solero, L.; Odhano, S.; Zanchetta, P.

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Authors

L. Bigarelli

A. Lidozzi

M. Di Benedetto

L. Solero

S. Odhano



Abstract

This paper investigates the DC-link voltage control of an active rectifier that is supplied by a variable speed permanent magnet synchronous generator. This configuration is commonly encountered in gearless wind energy conversion systems as well as in variable speed generating units. The proposed control strategy uses an optimal voltage vector based modulated model predictive control to achieve direct power control. The studied scheme combines the advantages of finite control set Model Predictive Control (MPC) and control techniques that use pulse width modulator. The fast dynamics of the former are obtained during large transients and constant switching frequency operation, of the latter, is ensured in steady state. At each sampling instant, all switching states are evaluated and the two adjacent states that give minimum error in the controlled variables are selected. The duty-cycle of each of these vectors is computed through linear combination and appropriately limited for over-modulation. Simulations and Co-simulation results presented in the paper show interesting results. The control strategy has been developed on an FPGA control platform and experimental results at steady state are shown, which guarantee the computational feasibility of the control strategy.

Citation

Bigarelli, L., Lidozzi, A., Di Benedetto, M., Solero, L., Odhano, S., & Zanchetta, P. (2018). Modulated Optimal Model Predictive Control for Variable Speed Gen-Sets. In 2018 IEEE Energy Conversion Congress and Exposition (ECCE) (6859-6865). https://doi.org/10.1109/ECCE.2018.8558374

Presentation Conference Type Conference Paper (Published)
Conference Name 2018 IEEE Energy Conversion Congress and Exposition (ECCE)
Start Date Sep 23, 2018
End Date Sep 27, 2018
Acceptance Date Apr 12, 2018
Online Publication Date Dec 6, 2018
Publication Date Sep 23, 2018
Deposit Date Feb 18, 2019
Publicly Available Date Feb 19, 2019
Publisher Institute of Electrical and Electronics Engineers
Pages 6859-6865
Book Title 2018 IEEE Energy Conversion Congress and Exposition (ECCE)
ISBN 9781479973132
DOI https://doi.org/10.1109/ECCE.2018.8558374
Public URL https://nottingham-repository.worktribe.com/output/1563435
Publisher URL https://ieeexplore.ieee.org/document/8558374
Contract Date Feb 18, 2019

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