Optimal Design of Passive Filters Based on Optimal Tuned Frequency

This paper proposes an optimal design method for passive filters based on an optimal tuned frequency,which can ensure the detuning filter still has the best efficiency.The optimization model based on the optimal tuned frequency selects the capacitance of each branch as an independent optimization variable and minimizes the total voltage harmonic distortion,considering the reactive power balance,the harmonic voltage and harmonic current limits.The optimal compensation capacity and the optimal tuned frequency can be obtained through the iterative algorithm.A study case shows that the filters designed with the proposed method has better efficiency as compared to those filters designed with experience.