Delay Dependent H∞ Based Robust Control Strategy for Unified Power Quality Conditioner in a Microgrid

Abstract

This paper proposes a novel robust control scheme based on delay-dependent <em>H</em>∞for unified power quality conditioner (UPQC) in a microgrid under the influence of the delay and parameter uncertainties. A new UPQC model considering the effects of the delay and parameter uncertainties is established. Then, the <em>H</em>∞ controller is designed based on the cone complementarity linearization (CCL) algorithm. Finally, the effectiveness of the proposed control method is demonstrated by numerical simulations.