WECS Interfaced To Grid Through Matrix Converter Using MPC

In this paper a Model Predictive Control (MPC) technique is applied to a direct matrix converter which is used for interfacing of grid to a Wind Energy Conversion System (WECS). Certain LC filters are used along with direct matrix converter to obtain a constant power supply for grid. The paper addresses the work for a WECS with variable speed operation where the primary objective of control is to get constant sinusoidal voltage and constant power and frequency as required to the connected grid. MPC technique is adopted to modulate the matrix converter in order to produces constant and reliable power for grid with different wind speeds for WECS. With MPC, several different control objectives can be easily obtained such as common-mode voltage also the input power factor. The controller is observed for various conditions like variable wind speed, static loads and dynamic loads presented within the grid. The proposed technique for control is reliable, less complex, effective and relevant for application. Simulation study is performed for the proposed method and to verify the capability of the controlled scheme certain results are provided. The MPC technique can be used for micro-grid or smart building with smaller wind conversion systems.