Serving Constant and Pulsed Loads in Naval Power and Energy Systems

Integrating pulsed loads to power systems requires the use of energy storage due to slow generator ramp rates. The derived challenge for these integrated systems is the control mechanism for power sharing in pulsed, transient conditions. Improvement in the system response to pulsed loads is enabled by the introduced control method, Extended Droop Control, a frequency-based load allocation technique. A rapid simulation method for Extended Droop Control is presented and used to validate load sharing in the time and frequency domains. Then, a system with pulsed and base loads with Extended Droop Control is experimentally evaluated for a naval DC power system application, and trade-offs between higher and lower cutoff frequencies of the load filter are evaluated. Simulated and experimental results of applying Extended Droop Control to this system are compared, and Extended Droop Control is found to be a suitable way to integrate energy storage and pulsed loads into a power system.