A Improved Parameter Design Method of LCL APF Interface Filter

LCL filters are widely used in public interfaces of active power filters (APF) and power grids due to their strong harmonic attenuation capabilities and the miniaturization of passive components. In order to make the LCL interface filter have low damping loss and high harmonic filtering effect, this paper chooses an improved LCL passive interface filter commonly used in APF for parameter design. Theoretical analysis and simulation comparison of performance comparison with conventional LCL-type passive interface filters are performed. The experimental results prove the feasibility and superiority of this parameter design method.