Iranian Society of Heating, Refrigerating, and Air Conditioning Engineers (IRSHRAE) Journal of Renewable and New Energy 2423-4931 12 1 2025 03 21 Resonance Damping of LCL Filters Using Integral-Proportional Capacitor Current Feedback Method for PEMFC Power Injection into LV Networks Resonance Damping of LCL Filters Using Integral-Proportional Capacitor Current Feedback Method for PEMFC Power Injection into LV Networks 57 71 212545 10.22034/jrenew.2025.212545 FA Majid Hosseinpour Department of Electrical Engineering, University of Mohaghegh Ardabili, Ardabil, Iran 0000-0001-5074-4604 Soghra Ebrahimzadeh Department of Electrical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran Journal Article 2023 06 27 The performance and environmental benefits of fuel cells make them a popular choice for distributed generation systems (DGs). Fuel cells are connected to the network using power electronic converters. Power inverters have high frequency harmonics due to PWM switching and its control delays. LCL filters are used to eliminate these harmonics. Network impedance changes affect the resonant frequency of LCL filters and may cause system instability. Active damping methods are used to weaken the resonance of LCL filters. In this paper, a fuel cell system is used to inject power into the grid through a power inverter and LCL filter. Integral-proportional capacitor current feedback is used for LCL filter resonance damping. MATLAB/Simulink simulation results are presented to verify the validity of the proposed method. Integral-proportional capacitor current feedback is used for LCL filter resonance damping. MATLAB/Simulink simulation results are presented to verify the validity of the proposed method.The simulation results show that the proposed method is stable against changes in network impedance and fuel cell parameters, and provides a good performance. The simulation results show that the proposed method is stable against changes in network impedance and fuel cell parameters, and provides a good performance. The performance and environmental benefits of fuel cells make them a popular choice for distributed generation systems (DGs). Fuel cells are connected to the network using power electronic converters. Power inverters have high frequency harmonics due to PWM switching and its control delays. LCL filters are used to eliminate these harmonics. Network impedance changes affect the resonant frequency of LCL filters and may cause system instability. Active damping methods are used to weaken the resonance of LCL filters. In this paper, a fuel cell system is used to inject power into the grid through a power inverter and LCL filter. Integral-proportional capacitor current feedback is used for LCL filter resonance damping. MATLAB/Simulink simulation results are presented to verify the validity of the proposed method. Integral-proportional capacitor current feedback is used for LCL filter resonance damping. MATLAB/Simulink simulation results are presented to verify the validity of the proposed method.The simulation results show that the proposed method is stable against changes in network impedance and fuel cell parameters, and provides a good performance. The simulation results show that the proposed method is stable against changes in network impedance and fuel cell parameters, and provides a good performance. https://www.jrenew.ir/article_212545_166c41280eab39be8919d1c75a9fcf60.pdf