Harmonic Voltage Control in Distributed Generation Systems Using Optimal Switching Vector Strategy

With increased penetration of renewable power and the nonlinear loads in distributed generation (DG) systems, quality concerns are exhibited active distribution networks, especially challenges associated with current voltage harmonics system. Various conventional harmonic compensation techniques developed for voltage-controlled DG inverters past, majority involve either multiple proportional-integral (PI) or proportional-resonant (PR) controllers eliminating grid harmonics. The xmlns:xlink="http://www.w3.org/1999/xlink">current-controlled inverters, on other hand, not preferred industrial applications, accounting to their wide variations switching frequency. A novel adaptive control is here, which neither uses any PI regulators nor imposes stability issues nonideal implementation infinite gains PR controllers. Interestingly, logic can be used both grid-connected off-grid operational modes. Furthermore, this strategy allows a network operator use as an additional supplement that enabled/disabled per requirement. exploits property optimal-switching-vector controller, i.e., accurate output tracking. Simulations results demonstrate effectiveness suppress load grid-interfaced (GI) modes, respectively, ultimately satisfying mandatory IEEE standard-1547. Experimental verify viability controller practical applications.