Parametric Robust Control Law Design for DC-DC FB Converter

摘要

The high power DC-DC full-bridge converter with 175...320 VDC supply voltage is considered. Due to the difficulty of the transformer leakage inductance measuring with the sufficient accuracy and the change of supply voltage the plant with uncertain parameters is given in the interval form. The problem is solved by the median modal control method based on the relative interval value of the system state matrix trace which is changed by median component variation. This approach is realized by add-on feedback on the object state vector. The designed closed-loop system allows to obtain a desired stabilized output voltage.