Stability Issue of DC-DC Converters with Input LC Filter via Flatness-Based Control

Instabilities of converters with an LC input filter in transportation systems have known, and the different solutions to the problem have been proposed. An innovative control strategy to control the current of a boost converter with LC input filter is presented. Instead of control of the boost inductor current, the filter inductor current is controlled using the differential flatness property. The advantages of this method include no stabilizer requirement and excellent trajectory tracking in the transient and steady state. The validation of the proposed control strategy is made through experimental results.