H ∞ LPV Control with Pole Placement Constraints for Synchronous Buck Converters with Piecewise-Constant Loads

Abstract EN

This paper addresses the output regulation problem of synchronous buck converters with piecewise-constant load fluctuations via linear parameter varying (LPV) control scheme.

To this end, an output-error state-space model is first derived in the form of LPV systems so that it can involve a mismatch error that temporally arises from the process of generating a feedforward control.

Then, to attenuate the mismatch error in parallel with improving the transient behavior of the converter, this paper proposes an LMI-based stabilization condition capable of achieving both H ∞ and pole-placement objectives.

Finally, the simulation and experimental results are provided to show the validity of our approach.