### A new discrete-time Robust Adaptive Predictive Control-based RMRAC applied to grid connected converters with LCL Filter / Um novo controlador preditivo robusto adaptativo baseado em RMRAC em tempo discreto aplicado a conversores conectados à rede com filtro LCL

#### Abstract

In this work, is developed a new discrete-time robust adaptive predictive control based on combining the adaptive structure of a Model Reference Adaptive Controller (MRAC), to adjust gains online, with the control law One Sample Ahead Preview (OSAP), a particular case of deadbeat controller, for the current loop of a grid-connected voltage-source converter, also, this control not need resonant controllers to reject exogenous disturbances. A case application is presented, the grid-side currents control of a three-phase full-bridge static converter connected to the electrical grid by LCL filter. Simulation results are presented to show the performance of the proposed controller in a grid connected system.

#### Full Text:

PDF (Português (Brasil))#### References

Baek, J., Kim, S., and Kwak, S. (2015). Predictive control method for load current of single-phase voltage source inverters. In 2015 IEEE Applied Power Electronics Conference and Exposition (APEC), 2256–2260.

Chen, J.W., Liu, Y.C., et al. (2019). Design of dc micro- grid system for integration of pmsm elevator and renew- able energy sources. In 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 981–985. IEEE.

Chowdhury, V.R. (2016). Analysis control and design of a hybrid renewable power generation system. In North American Power Symposium (NAPS), 1–7. IEEE.

Costa, et. al. (2020). Energia solar fotovoltaica uma alternativa viavel? In Brazilian Journal Development, vol. 6. Number 9, 2020. DOI:10.34117/bjdv6n9-639

Dannehl, J., Fuchs, F.W., and Hansen, S. (2007). PWM rectifier with LCL-filter using different current control structures. In 2007 European Conference on Power Electronics and Applications, 1–10. IEEE.

Duesterhoeft, W.C., Schulz, M.W., and Clarke, E. (1951). Determination of instantaneous currents and voltages by means of alpha, beta, and zero components. Transactions of the American Institute of Electrical Engineers, 70(2), 1248–1255.

Evald, P.J.D.O., Tambara, R.V., and Grundling, H.A., A direct discrete-time reduced order robust model reference adaptive control for grid-tied power converters with LCL filter.", Revista Eletrônica de Potência, vol. 25, number 3, 2020.

Evald, et. Al (2020), A Discrete-Time Robust Adaptive PI Controller For Grid-Connected Voltage Source Converter With LCL Filter, Revista Eletrônica de Potência. (in press), 2021.

Evald, P.J.D.O.; Tambara, R.V.; Gründling, H.A. (2020) A Discrete-Time Robust MRAC Applied on Grid-Side Current Control of a Grid-Connected Three-Phase Converter with LCL Filter. ELECTRIMACS 2019: Selected Papers-Volume 1, v. 615, p. 45, 2020.

Exposto, B., Rodrigues, R., Pinto, J.G., Monteiro, V., Pedrosa, D., and Afonso, J.L. (2015). Predictive control of a current-source inverter for solar photovoltaic grid interface. In 2015 9th International Conference on Compatibility and Power Electronics (CPE), 113–118.

Fang, X., Ding, X., Zhong, S., and Tian, Y. (2019). Improved quasi-y-source dc-dc converter for renewable energy. CPSS Transactions on Power Electronics and Applications, 4(2), 163–170.

Gabe, I.J., Montagner, V.F., and Pinheiro, H. (2009). Design and implementation of a robust current controller for vsi connected to the grid through and lcl filter. IEEE Transactions on Power Electronics, 24(6), 1444 – 1452. Ioannou, P.A. and Tsakalis, K.S. (1986a). A robust direct adaptive controller. IEEE Transactions on Automatic Control, 31(2), 1033 – 1043.

Hollweg, et. al. (2020). Controlador Robusto Adaptativo Super-Twisting Sliding Mode Por Modelo De Referência Para Regulação Das Correntes Injetadas Em Redes Fracas Por Inversores Trifásicos Com Filtro LCL, Revista Eletrônica de Potência, (in press), 2021.

Ioannou, P.A. and Tsakalis, K.S. (1986b). A robust discrete-time adaptive controller. IEEE Proceedings of 25th Conference on Decision and Control, (2), 1033 – 1043.

Jha, S. (2016). Implication of optimal performance of renewable energy system. In 7th Power India International Conference (PIICON), 1–5. IEEE.

Kuznietsov, M., Vyshnevska, Y., Brazhnyk, I., and Melnyk, O. (2019). Modeling of the generation-consumption imbalance in the heterogeneous energy systems with renewable energy sources. In 6th International Conference on Energy Smart Systems (ESS), 196–200. IEEE.

Lindgren, M. and Svensson, J. (1998). Control of a voltage-source converter connected to the grid through an lcl-filter-application to active filtering. Proceedings of PESC’98, 229 – 235.

Liserre, M., Teodorescu, R., and Blaabjerg, F. (2006). Stability of photovoltaic and wind turbine grid-connected inverters for a large set of grid impedance values. IEEE Transactions on Power Electronics, 21(1), 263–272.

Maccari, L.A.; Massing, J..S.L..R.C..P.H..O.R..F.M.V.

(2014). Lmi-based control for grid-connected converters with lcl filters under uncertain parameters. Power Electronics, IEEE Transactions on, 29, 3776–3785.

Malinowski, M., Milczarek, A., Kot, R., Goryca, Z., and Szuster, J.T. (2015). Optimized energy-conversion systems for small wind turbines: Renewable energy sources in modern distributed power generation systems. IEEE Power Electronics Magazine, 2(3), 16–30.

Mariethoz, S., Beccuti, A.G., and Morari, M. (2008). Analysis and optimal current control of a voltage source inverter connected to the grid through an lcl filter. Records of IEEE Power Electronics Specialists, 2132 – 2138.

Massing, J., Stefanello, M., Gründling, H., and Pinheiro, H. (2012). Adaptive current control for grid-connected converters with lcl-filter. Industrial Electronics, IEEE Transactions on, 59, 4681 – 4693.

Mohamed, Y.R. and El-Saadany, E. (2007). An improved deadbeat current control scheme with a novel adaptive self-tuning load model for a three-phase PWM voltage- source inverter. IEEE Trans. Ind. Electron., 54(2), 747– 759.

Poh Chiang Loh and Holmes, D.G. (2005). Analysis of multiloop control strategies for LC/CL/LCL-filtered voltage- source and current-source inverters. IEEE Transactions on Industry Applications, 41(2), 644–654.

Ponnaluri, S. and Serpa, L. (2008). Dc/ac converter with dampened lcl filter distortions. United States Patent, (US7450405B2).

Shi, H., Zong, J., and Ren, L. (2019). Modified model predictive control of voltage source inverter. In 2019 IEEE 4th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC), volume 1, 754–759.

Tambara, R.V. (2014). Um controlador adaptativo robusto aplicado a conversores estáticos conectados à rede elétrica através de filtro LCL. Ph.D. thesis, Universidade Federal de Santa Maria, UFSM.

Tambara, R.V., Massing, J.R., Pinheiro, H., and Gründling, H.A. (2013). A digital RMRAC controller based on a modified RLS algorithm applied to the control of the output currents of an lcl-filter connected to the grid. European Power Electronics conference (EPE).

Tambara, R.V., Kanieski, J.M., Massing, J.R., Stefanello, M., and Gru¨ndling, H.A. (2017). A discrete-time robust adaptive controller applied to grid-connected converters with LCL filter. Journal of Control, Automation and Electrical Systems, 28(3), 371–379.

DOI: https://doi.org/10.34117/bjdv7n3-053

### Refbacks

- There are currently no refbacks.