An improved DBC-MPC strategy for LCL-filtered grid-connected invertersAn improved DBC-MPC strategy for LCL-filtered grid-connected inverters Πλήρης Δημοσίευση σε Συνέδριο Conference Full Paper 2024-12-132022enIn recent years, the deadbeat-control-based MPC algorithm (DBC-MPC) has been widely studied because it can effectively reduce the number of candidate vectors. However, for the LCL-type grid-connected inverter, when calculating the reference value of the inverter output voltage, the control algorithm only addresses the influence of the current tracking error on the reference value of the output voltage of the inverter, and ignores the influence of the filter capacitor voltage, resulting in poor control performance. Therefore, in this paper an improved DBC-MPC is proposed for the LCL-type grid-connected inverter, where both effects of current and voltage tracking errors on the control performance are fully considered. Compared with the traditional DBC-MPC algorithm, the control performance of the system is greatly improved, while still effectively reducing the number of candidate voltage vectors. Finally, a three-phase simulation model is built to verify the control performance of the proposed algorithm.This work was performed within the framework of the project “eSOLAR: Principle and control of high-efficiency Buck-Boost type Photovoltaic inverter” of the program “Bilateral and Multilateral Research & Technology Co-operation between Greece and China”, funded in Greece by the Operational Program.http://creativecommons.org/licenses/by/4.0/48th Annual Conference of the IEEE Industrial Electronics SocietyProceedings of the 48th Annual Conference of the IEEE Industrial Electronics Society Zhang Bingtao Wu Weimin Gao Ning Koutroulis Eftychios Κουτρουλης Ευτυχιος Chen Jianming Lu Gang Chung Henry Blaabjerg, Frede, 1963- Institute of Electrical and Electronics Engineers LCL-type filter Three-phase two-level grid-connected inverter Finite-control-set model predictive control Deadbeat control