  With the integration of loads such as pulse power loads, a new control
challenge is presented in meeting their high ramp rate requirements. Existing
onboard generators are ramp rate limited. The inability to meet the load power
due to ramp rate limitation may lead to instability. The addition of energy
storage elements in addition to the existing generators proves a viable
solution in addressing the control challenges presented by high ramp rate
loads. A distributed energy management strategy maximizing generator efficiency
and minimizing energy storage degradation is developed that facilitates an
optimal adaptive power split between generators and energy storage elements.
The complex structure of the energy storage degradation model makes it tough
for its direct integration into the optimization problem and is not practical
for real-time implementation. A degradation heuristic to minimize absolute
power extracted from the energy storage elements is proposed as a degradation
heuristic measure. The designed strategy is tested through a numerical case
study of a consolidated shipboard power system model consisting of a single
generator, energy storage element, and load model. The results show the impact
of the designed energy management strategy in effectively managing energy
storage health.
