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Dissertations, Master's Theses and Master's Reports - Open

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State Of Charge Based Droop Surface For Optimal Control Of Dc Microgrids, Arthur John Jones Jan 2014

State Of Charge Based Droop Surface For Optimal Control Of Dc Microgrids, Arthur John Jones

Dissertations, Master's Theses and Master's Reports - Open

For a microgrid with a high penetration level of renewable energy, energy storage use becomes more integral to the system performance due to the stochastic nature of most renewable energy sources. This thesis examines the use of droop control of an energy storage source in dc microgrids in order to optimize a global cost function. The approach involves using a multidimensional surface to determine the optimal droop parameters based on load and state of charge. The optimal surface is determined using knowledge of the system architecture and can be implemented with fully decentralized source controllers. The optimal surface control of …


Realization Of A Dc Microgrid Using A Hamiltonian Based Controls Solution, Matthew J. Heath Jan 2013

Realization Of A Dc Microgrid Using A Hamiltonian Based Controls Solution, Matthew J. Heath

Dissertations, Master's Theses and Master's Reports - Open

Future power grids are envisioned to be serviced by heterogeneous arrangements of renewable energy sources. Due to their stochastic nature, energy storage distribution and management are pivotal in realizing microgrids serviced heavily by renewable energy assets. Identifying the required response characteristics to meet the operational requirements of a power grid are of great importance and must be illuminated in order to discern optimal hardware topologies. Hamiltonian Surface Shaping and Power Flow Control (HSSPFC) presents the tools to identify such characteristics. By using energy storage as actuation within the closed loop controller, the response requirements may be identified while providing a …