To solve the issues posed by excessive DC bus voltage fluctuations in power systems and short-term overloads in diesel generator sets and energy storage systems
a control strategy that integrates droop control with voltage compensation and virtual DC generator control into hybrid energy storage systems is proposed for green tugboat operations. Firstly
a theoretical analysis of the control strategy is presented. Subsequently
a hybrid energy storage system model is constructed in Matlab/Simulink to simulate and verify the feasibility of the control strategy. Finally
the control strategy is integrated into the green tugboat power system to conduct simulation experiments. The results demonstrate that the green tugboat's diesel generator set
which incorporates the hybrid energy storage control strategy
is capable of continuously outputting economical power under all operating conditions except the mooring condition. Furthermore
the DC bus voltage reains at the rated voltage of 1000 V in steady state. Additionally
the voltage fluctuation in the transient process is less than 1.5%. The proposed control strategy has been shown to significantly enhance the safety and stability of the green tugboat power system.
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