INCREASING ENDURANCE IN TACTICAL DC MICROGRIDS WITH VARIABLE GAIN DROOP CONTROL
Dommert, John E.
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Current tactical microgrids range from dozens of diesel generators to small solar panels. Projected operational concepts greatly reduce the size and change the mission of these bases from the previous paradigm. With more mobile basing, the integration of novel control architectures based on efficiency presents an opportunity for greater operational endurance from reduced fuel consumption and smaller physical footprints. To form these microgrids, diesel generators have been used for decades and are proven to be a reliable and flexible power source. Tactical power systems employed today are only in the early stages of leveraging the benefits of parallel generation used in industry. Droop control is currently one of the industry standards for operating parallel generators. By optimizing the underlying architecture of droop control methods, paralleled generators can achieve greater efficiency and mission flexibility. This thesis will model a small-scale mobile microgrid using an optimized droop control scheme to achieve an optimal power dispatch with respect to efficiency. Optimal dispatch was determined using the combined generator fuel consumption as a function of the output power. The optimal dispatch was achieved by deriving the corresponding droop gains.
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