I am working on non-linear Model Predictive Control. In my Ms research. I want to design the full micro grid operation and control for islanded and grid-connected mode. In islanded case, i designed voltage control strategy while on for gird-connected mode i designed separate direct-power MPC. Now i want a seamless transition from islanded/standalone mode to grid tied mode and vice versa. Kindly, suggest me some advanced and latest transition techniques.