Robust H∞ Decentralized Control Design for HVDC Link Embedded in a Large-scale AC Grid

摘要: This paper proposes a static decentralized controller design method for an HVDC link embedded in large-scale AC grid based on the Linear Matrix Inequalities (LMIs) technique. The considered studied system is treated as composed by two overlapping subsystems. interconnection between subsystems nonlinear and increasing disturbance rejection robustness against norm-bounded parametric uncertainties of closed-loop. Indeed, overall tracking ability entire closed-loop significantly improved with proposed controller. both analytically ensured synthesis gains regulators and, next proven validation simulations. closed loop can be improved. It shown that this control deal different lengths, including short ones each coupling converters strong.Another advantage decoupling resilience: no communication used stations, case failure one converter or loss measures control, other not affected. Moreover, it guarantees stability system. Finally, efficiency controllers are tested compared others, to illustrate its effectiveness.