Renewable energy microgrid control with energy storage integration

The goal of this paper is to present the design of feedback controllers for the integration of renewable energy into a DC bus microgrid. These feedback controllers are divided into two types. The first type is based on a feedback guidance command that implements the boost converter duty cycle. The second type is based on Hamiltonian Surface Shaping and Power Flow Control (HSSPFC) [1], [2], [3], [4] that implements the energy storage systems. The duty cycle controller is fully coupled while the HSSPFC is completely decoupled due to the skew-symmetric form that is analogous to spacecraft attitude and robot manipulator controllers. A DC bus with two boost converters and an equivalent load is used as an example. Numerical simulation results show the effects of 0% energy storage with renewable energy supplies to 100% energy storage with fossil energy supplies.