Optimization Design of Low-Pass Filter in Sensorless Static Model Control for Wide Input Wind Power System

This paper presents an optimization design method for low-pass filter which applied in a sensorless static model digitally controlled dc-dc converter. An evaluation of dynamic characteristics for fluctuation of input voltage of dc-dc converter has not yet been confirmed. Therefore, the stability limits of filter coefficient due to the fluctuation of input voltage are analyzed in this study. The optimization coefficient of filter can be selected based on the stability limits. The simulation results demonstrate that the good dynamic performance can be obtained by the proposed optimization design method even when the input voltage is fluctuated.