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0.25 Io* =15 A control strategy offered is highly effective in attaining the
0.2 I*o=30 A required control objectives for grid-tied qSZI.
THD of I*o 0.15 CONFLICT OF INTEREST
0.1 The authors have declared no conflict of interest.
0.05 REFERENCES
0 [1] A. K. Abdulabbas, S. M. Salih, and M. A. Alawan, “The
2 2.5 3 3.5 4 4.5 5 5.5 6 analysis of sub-synchronous resonance in a wind farm
Kcd = Kcq for a doubly-fed induction generator using modern ana-
lytical method,” Iraqi Journal for Electrical And Elec-
Fig. 18. The relationship between the total harmonic tronic Engineering, vol. 20, no. 1, 2024.
distortion (THD) of grid current and the coefficient of
capacitor feedback loop (Kcd) is examined for different [2] F. Marignetti, R. L. Di Stefano, G. Rubino, and R. Giaco-
values of Io*. mobono, “Current source inverter (csi) power converters
in photovoltaic systems: A comprehensive review of per-
TABLE II. formance, control, and integration,” Energies, vol. 16,
COMPARISONS BETWEEN FOUR CONTROL STRATEGIES no. 21, p. 7319, 2023.
AND THE PROPOSED CONTROL STRATEGY.
[3] S. Huang, F. Tang, Z. Xin, Q. Xiao, and P. C. Loh, “Grid-
Type of [4] [8] [10] [16] Suggested current control of a differential boost inverter with hid-
comparison control den lcl filters,” IEEE Transactions on Power Electronics,
unreported Excellent unreported unreported approach vol. 34, no. 1, pp. 889–903, 2018.
Robustness unreported non- Excellent
Asymptotical existent unreported non- [4] J. Xu, S. Xie, and T. Tang, “Active damping-based con-
Global stability existent Guaranteed trol for grid-connected lcl-filtered inverter with injected
grid current feedback only,” IEEE Transactions on Indus-
Damping Not needed Not needed Not needed needed Not needed trial Electronics, vol. 61, no. 9, pp. 4746–4758, 2013.
resistor Rapid Very fast Very fast Rapid Very fast
Responsive [5] M. Ozturk, F. Zungor, B. Emre, and B. Oz, “Quasi res-
behavior onant inverter load recognition method,” IEEE Access,
vol. 10, pp. 89376–89386, 2022.
Harmonic Good non- non- non- Very good
rejection existent existent existent [6] M. Turzynski and P. J. Chrzan, “Reducing common-
mode voltage and bearing currents in quasi-resonant dc-
link inverter,” IEEE Transactions on Power Electronics,
vol. 35, no. 9, pp. 9553–9562, 2020.
heightened control intricacy. The suggested control mecha- [7] L. Liu, J. Xu, J. Ye, and A. Shen, “Passivity enhance-
nism ensures the overall stability of the closed-loop system. ment and grid-current distortion mitigation for inverter-
Furthermore, it incorporates two loops that are dependent on side current controlled lcl-type grid-connected inverters,”
the current loop of the ac-side inverter and the voltage loop IEEE Access, 2024.
of the capacitor. These loops contribute to achieving a desir-
able level of damping performance. The control of the direct [8] M. A. Estrada, J. A. Moreno, and L. Fridman, “Sliding
current (dc) side is achieved by the utilization of a straight- mode controllers design based on control lyapunov func-
forward boost control mechanism. The closed-loop system tions for uncertain lti systems,” IFAC-PapersOnLine,
is regulated by integrating the shoot through states with the vol. 56, no. 2, pp. 1615–1620, 2023.
PWM signal acquired by the Lyapunov function-based control
approach. Theoretical considerations have been confirmed [9] S. Prakash, J. K. Singh, and R. K. Behera, “Lyapunov
through computer simulations conducted during steady-state function based control strategy for single-phase grid-
operation and a sudden alteration in the amplitude of the ref- connected pv system with lcl-filter,” in 2020 IEEE Inter-
erence grid current. The findings provided indicate that the national Conference on Power Electronics, Drives and
Energy Systems (PEDES), pp. 1–6, IEEE, 2020.