Volume 23, Issue 1 (JIAEEE Vol.23 No.1 2026)
Journal of Iranian Association of Electrical and Electronics Engineers 2026, 23(1): 1-25 |
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Hosseinpour M, Tavassoli E, Sajedi S, Sedaghati F. Design and Control of Photovoltaic Power Integration System to Low-Voltage Network Based on Phase Compensator on Capacitor Current Active Damping. Journal of Iranian Association of Electrical and Electronics Engineers 2026; 23 (1) :1-25
URL: http://jiaeee.com/article-1-1710-en.html
URL: http://jiaeee.com/article-1-1710-en.html
Faculty of Engineering, University of Mohaghegh Ardabili
Abstract: (711 Views)
In this paper, a grid-tied photovoltaic power conditioning system with an LCL filter is presented, which is capable of injecting high-quality current and maintaining strong stability under disturbances. Since the output voltage of photovoltaic cells is lower than the grid voltage, a DC–DC converter is employed to step up the voltage, and an inverter with an LCL filter is used to convert the DC voltage into the AC voltage required by the grid. LCL filters exhibit excellent performance in attenuating switching harmonics; however, one of their main drawbacks is the inherent resonance, which can lead to system instability. When digital control is applied to grid-tied inverters, control delays, comprising computational and pulse-width modulation (PWM) delays, can further weaken inverter stability against variations in grid impedance. In this study, a capacitor current feedback method is employed to damp the inherent resonance of the LCL filter, and a lead compensator is introduced in the capacitor current feedback path to compensate for control delays in the grid-tied photovoltaic power conditioning system. To verify the effectiveness of the proposed approach, a step-by-step design procedure is presented for both the lead compensator and the closed-loop system parameters. Simulation results of the grid-tied photovoltaic power conditioning system with an LCL filter, obtained using MATLAB/Simulink, confirm the validity and effectiveness of the proposed method.
Keywords: grid-tied photovoltaic system, phase compensator, LCL filter, digital control delay, capacitor current feedback active damping
Type of Article: Research |
Subject:
Power
Received: 2024/03/26 | Accepted: 2025/10/25 | Published: 2026/03/30
Received: 2024/03/26 | Accepted: 2025/10/25 | Published: 2026/03/30
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