Journal
JOURNAL OF MARINE SCIENCE AND ENGINEERING
Volume 10, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/jmse10122037
Keywords
ship DC microgrid; power distribution; tracking differentiator; consensus algorithm
Categories
Funding
- High Technology Ship Research and Development Program of the Ministry of Industry and Information Technology of China
- [CJ02N20]
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This study proposes a power distribution approach to address the issue of uneven power distribution of distributed generation in a ship DC microgrid. Power control is carried out using a tracking differentiator, while ensuring quick state-of-charge balance and reducing communication pressure on the power grid. Simulation results demonstrate the effectiveness and efficiency of the suggested strategy.
Compared to alternating current (AC) grids, direct current (DC) grids are becoming more and more popular. A power distribution approach is suggested in order to solve the issue of uneven power distribution of distributed generation (DG) in a ship DC microgrid. Power control is carried out using a tracking differentiator (TD), while the output power change rate is not greater than the maximum power ramp rate permitted by the battery, and state-of-charge balance is attained quickly. The proposed strategy also reduces the communication pressure on the power grid. A distributed hierarchical control model of a DC microgrid based on a consensus algorithm is created in order to validate the suggested methodology. The simulation results demonstrate that the established model is capable of simulating the DC microgrid accurately, that the states of charge values of the five batteries gradually converge under the adjustment of the secondary strategy, and that the suggested strategy is reasonable and efficient.
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