PROJECT TITLE :

Design and Qualitative Robustness Analysis of an DOBC Approach for DC-DC Buck Converters With Unmatched Circuit Parameter Perturbations

ABSTRACT:

A disturbance observer-primarily based management (DOBC) approach is proposed in this paper for management style and qualitative robustness analysis of PWM-based DC-DC buck power converters. A disturbance compensation gain is built for the composite control algorithm to cancel the unrivaled uncertainties in the output voltage channel. Rigorous criterion is provided to point out the quantitative robustness between controller parameters and circuit uncertainties. The DOBC approach delivers not only a promising disturbance rejection performance however also a superior property of tracking performance recovery. The feasibility and efficiency of the proposed approach is validated by experimental results based mostly on LabVIEW real-time management take a look at setup.