Asymmetric dual-sided series-type DC distribution network for the second-generation vessel integrated power system
The compact and flexible integration of energy storage devices (ESDs) into medium-voltage DC (MVDC) grids is identified as a critical challenge in the second-generation vessel integrated power system (IPS). The conventional parallel-type DC distribution networks (PTDDN), which are based on common vo...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | International Journal of Electrical Power & Energy Systems |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142061525004818 |
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| Summary: | The compact and flexible integration of energy storage devices (ESDs) into medium-voltage DC (MVDC) grids is identified as a critical challenge in the second-generation vessel integrated power system (IPS). The conventional parallel-type DC distribution networks (PTDDN), which are based on common voltage buses, are characterized by the requirement of numerous bulky MVDC converters, which occupy substantial valuable space onboard. PTDDN also hinders the interzonal utilization of the ESDs. In view of this, this paper proposes a novel series-type DC distribution network (STDDN) with asymmetric dual-sided power supply structure. The loads and ESDs are integrated through the low-voltage DC (LVDC) converters and modular multilevel multi-port DC/DC converters (M3DCs), which remarkably improves the power density and flexibility. The operating boundaries are derived, and the coordinated control strategies of asymmetric M3DCs under normal and fault conditions are proposed and verified through simulation and a scaled-down prototype experiment. |
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| ISSN: | 0142-0615 |