Closed loop inner current control of Grid Connected MMC based microgrid solar system in dq Frame

Abstract

The microgrid solar system integrates renewable energy sources, such as solar photovoltaic panels, into the grid through an MMC, enabling efficient and reliable power conversion. The inner current control strategy is critical for maintaining the stability and performance of the microgrid under varying operating conditions. In this paper paper presents a comprehensive study on the closedloop inner current control of a Grid-Connected Modular Multilevel Converter (MMC) based microgrid solar system, employing the dq (direct-quadrature) frame for control reference.it will elaborates on the design and implementation of the closed-loop inner current control system, discussing the selection of control method and appropriate control parameters . The control scheme’s effectiveness is evaluated through extensive simulation studies.