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A new stability enhancement method using KF estimation for the PWM-SMC-based grid-tied inverter under weak grid condition

Chen Bolin, Wu Weimin, Gao Chunxiao, Orabi Mohamed, Koutroulis Eftychios, Chung Henry, Blaabjerg, Frede, 1963-

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/73BC042C-026F-42FB-8F7B-8F5A542D3D9F-
Αναγνωριστικόhttps://doi.org/10.1109/JESTPE.2022.3178733-
Αναγνωριστικόhttps://ieeexplore.ieee.org/document/9784841-
Γλώσσαen-
Μέγεθος10 pagesen
ΤίτλοςA new stability enhancement method using KF estimation for the PWM-SMC-based grid-tied inverter under weak grid conditionen
ΔημιουργόςChen Bolinen
ΔημιουργόςWu Weiminen
ΔημιουργόςGao Chunxiaoen
ΔημιουργόςOrabi Mohameden
ΔημιουργόςKoutroulis Eftychiosen
ΔημιουργόςΚουτρουλης Ευτυχιοςel
ΔημιουργόςChung Henryen
ΔημιουργόςBlaabjerg, Frede, 1963-en
ΕκδότηςInstitute of Electrical and Electronics Engineersen
ΠεριγραφήThis work was supported in part by the program Bilateral and Multilateral Research and Technology Co-Operation between Greece and China under Grant 2017YFE0134300 and Grant eSOLAR/T7ΔKI-00066.en
ΠερίληψηA sliding-mode control (SMC) technology is widely used in inductor-capacitor-inductor (LCL)-filtered grid-tied inverters (GTIs) due to its strong robustness against parameter drift. However, under weak grid conditions, the steady performance of GTI using conventional pulsewidth-modulation-based SMC (PWM-SMC) degrades, resulting in increased harmonics in grid-injected currents. One reason is that the voltage feedforward term at the point of common coupling (PCC) in the SMC loop causes the phase margin of the inverter output impedance to decrease. Another reason is that the gain of conventional PWM-SMC-based systems is not high enough, especially under weak grid conditions. This article proposes a PCC feedforward voltage reconstruction method (named KF-PWM-SMC) for a PWM-SMC-based controller using Kalman filter (KF) estimation. As a result, the phase and magnitude of the inverter output impedance at the desired frequency can be significantly improved. Moreover, the proposed PCC feedforward voltage extraction method can save the PCC voltage control sensor, thereby improving the reliability of the whole system. A 3-kW experimental GTI based on the dSPACE DS1202 platform has been developed to verify the feasibility of the proposed control strategy.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2023-12-07-
Ημερομηνία Δημοσίευσης2022-
Θεματική ΚατηγορίαGrid-tied inverter (GTI)en
Θεματική ΚατηγορίαKalman filter (KF)en
Θεματική ΚατηγορίαInductor-capacitor-inductor (LCL) filteren
Θεματική ΚατηγορίαPoint of common coupling (PCC) voltage feedforwarden
Θεματική ΚατηγορίαSliding-mode control (SMC)en
Θεματική ΚατηγορίαWeak griden
Βιβλιογραφική ΑναφοράB. Chen, W. Wu, C. Gao, M. Orabi, E. Koutroulis, H. Chung, and F. Blaabjerg, "A new stability enhancement method using KF estimation for the PWM-SMC-based grid-tied inverter under weak grid condition," IEEE J. Emerging Sel. Top. Power Electron., vol. 10, no. 6, pp. 6950-6959, Dec. 2022, doi: 10.1109/JESTPE.2022.3178733.en

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