CPT-based Active Power Filter with Repetitive Controller and Capacitor Voltage Feedforward under Non-Ideal Grid

Author(s)

Filho, Jose de Arimateia O. ; Silva, Paulo Fernando ; Arenas, Luis De Oro ; Busarello, Tiago Davi Curi ; Paredes, Helmo Kelis Morales

• Document type: Journal article
• Source: 2024 IEEE ANDESCON; v. N/A, p. 6-pg., 2024-01-01.

Abstract

This paper proposes the design of a repetitive controller along with capacitor voltage feedforward applied to an LCL filter active power filter (APF). The repetitive controller can operate in systems with disturbances exhibiting high harmonic content and the feedforward action can reshape the output impedance of the APF. The conservative power theory (CPT) is proposed to obtain reference signals for the purpose of total mitigation of unwanted currents. The proposed technique ensures that only the active current flows through the electrical grid, while maintaining the stability of the APF-grid system through passivity theory. Finally, the proposed control strategy is validated using the Matlab/Simulink((R)) software under several conditions of grid imbalances and harmonic distortions. (AU)

• FAPESP's process: 22/07811-3 - Development of a methodology for stability study and analysis of multiple parallel inverters in microgrids
• Grantee: José de Arimatéia Olímpio Filho
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 22/15423-3 - Development of distributed control strategies for sharing heterogeneous multifunctional converters in AC microgrids
• Grantee: Helmo Kelis Morales Paredes
• Support Opportunities: Regular Research Grants