Hybrid Model Predictive Control strategy of renewable resources in DC microgrids based on Mixed Logic Dynamics and Measurements

摘要

A mixed logical dynamic model is established for hybrid concept by studying the microgrid hybrid property in depth. As a state variable, the energy in the DC bus is defined, the process purposes and constraints are provided with continuous state variables, logical variables and supplementary variables. The model predictive control theory is used in order to minimize battery swapping times among charging and discharge, based on the mixed logical dynamic model. The objective function of the quadric form is configured and an optimum vector sequence of input control is obtained. A simulation is developed, simulation results attest to the suggested approach that can both minimize the fluctuation of DC bus voltage and reduce battery energy storage device switching times.