Fuzzy Control Based Micro-grid System with a Back to Back Converter

Abstract

his concept proposes to use a back-to-back converter as the inter link between a utility grid and a micro grid. To justify this proposal, two modes of operation are explained and the benefits of the back-to-back converter over conventional static switches are shown. In mode-I, the inter-link converter injects pre specified amounts of active and reactive power to the micro grid. This mode is identified as Fuzzy control mode. Mode-2 is the voltage control mode in which, the back to back converter controls the voltage of the micro grid and maintains the power quality of the current drawn from the utility grid in spite of nonlinear and unbalanced loads in the micro grid. Abstract-This paper proposes to use a back-to-back converter as the interlink between a utility grid and a micro grid To justify this proposal, two modes of operation are explained and the benefits of the back-to-back converter over conventional static switches are shown. In mode-I, the inter-link converter injects pre specified amounts of active and reactive power to the micro-grid. This mode is identified as Fuzzy control mode. Mode-2 is the voltage control mode in which, the back to back converter controls the voltage of the micro-grid and maintains the power quality of the current drawn from the utility grid in spite of nonlinear and unbalanced loads in the micro-grid.