Coordination of Hybrid Energy Storage for Ship Power Systems With Pulsed Loads

Abstract

Due to the presence of onboard pulsed loads and other electric loads, medium-voltage direct current system (MVdc), which contains hybrid energy storage, is attracting a lot of interest in ship power system studies. To ensure proper operation of such a system, suitable management is required to maintain the voltage of the MVdc bus and confirm the load-generation balance. Consequently, this article first shows the effect of uncontrolled insertion of pulsed loads on the ship performance. Then, a proposed intelligent coordination algorithm is used to mitigate the effects of pulsed loads and ensure proper power sharing among the storage units, having different available energy. The coordination algorithm differentiates between the transient and steady state needs and takes the proper decision of insertion/removal of the appropriate storage unit and reference values. The algorithm is simulated through MATLAB/Simulink, and then the processor in the loop testing is used to validate the proposed algorithm.