Increased Operational Performance of OSVs by Onboard DC Grid

Hansen, Jan Fredrik; Lindtjørn, John Olav; Ødegaard, Ulf U.; Myklebust, Tor Arne

doi:10.3850/978-981-08-9731-4_osv2011-09

Cited by 33 publications

(16 citation statements)

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“…Figure 4 shows the capacitor values required to limit the voltage swing of the clamp. The capacitor value can be estimated depending on the allowed voltage swing and the stored energy, see Equation (6). A low capacitor value reduces its size but increases the voltage variation.…”

Section: Capacitance Of the Clamping Capacitormentioning

confidence: 99%

“…Electric propulsion, together with integrated hybrid power systems, is already a widely demonstrated solution for improving energy efficiency and fuel consumption in marine applications [1][2][3][4]. Among hybrid power systems, DC distribution-based shipboard power systems (DCSPS) can increase the efficiency of the diesel generators, reduce the volume and weight of the electric power system, and avoid frequency coupling problems [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Design of a Solid-State Circuit Breaker for a DC Grid-Based Vessel Power System

et al. 2019

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Electric propulsion and integrated hybrid power systems can improve the energy efficiency and fuel consumption of different kinds of vessels. If the vessel power system is based on DC grid distribution, some benefits such as higher generator efficiency and lower volume and cost can be achieved. However, some challenges remain in terms of protection devices for this kind of DC grid-based power system. The absence of natural zero crossing in the DC current together with the fast and programmable breaking times required make it challenging. There are several papers related to DC breaker topologies and their role in DC grids; however, it is not easy to find comprehensive information about the design process of the DC breaker itself. In this paper, the basis for the design of a DC solid-state circuit breaker (SSCB) for low voltage vessel DC grids is presented. The proposed SSCB full-scale prototype detects and opens the fault in less than 3 µs. This paper includes theoretical analyses, design guidelines, modeling and simulation, and experimental results.

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Section: Capacitance Of the Clamping Capacitormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of a Solid-State Circuit Breaker for a DC Grid-Based Vessel Power System

et al. 2019

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“…The concept of Onboard DC Grid has two configurations. The first is a multi-drive approach and the second one is a fully distributed system [12]. Another new approach includes components like AC generators, inverter modules, AC motors, etc., but AC switchboard is excluded [13].…”

Section: B DC Shipboard Power Systemmentioning

confidence: 99%

Optimal Design and Power Management in Shipboard System

Mummadi¹,

Vijay²

2019

CVRJST

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This paper deals with controlling DC power in shipboard power. Shipboard Power System (SPS) experiences disturbance due to variations in load. A DC bus distribution system developed for the U.S. Coast Guard's 270-ft Medium Endurance Cutter is simulated using MATLAB in this paper. Whenever a fault occurs in load, the system power varies. In this paper, the DC power system is controlled automatically by detecting disturbances. The proposed method includes selfgoverning fault detection and controlling DC power. The shipboard power system consists of a challenge related to restoration. The reliability and flexibility of the system are improved with effective integrated Energy Storage Devices (ESD) and Solar power. A maiden attempt is made in the paper with a solar panel for the cost-effective operation of the SPS. Also, the SPS with and without the solar panel is tested for optimal operation. Furthermore, this shipboard management system may be implemented in the Indian shipboard system for optimal power management.Index Terms: Optimal power management, DC bus distribution system, shipboard power system, energy storage system, solar power, fault detection, energy storage device.

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“…The concept of Onboard DC Grid has two configurations. The first is a multidrive approach (Figure 2) and the second one is a fully distributed system (Figure 3) [4].…”

Section: Figure 1 the Typical Ac Ifep Configurationmentioning

confidence: 99%

Advantages of using a DC power system on board ship

Prenc¹,

Cuculić²,

Baumgartner

2016

JMTS

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This article is structured to present an overview of a DC ship power system. The main DC grid configurations will be presented and a difference to the AC system configuration will be highlighted. Compared to the AC power system used on board ships, DC has some obvious benefits which will be explored in this paper. These benefits include: improvement of prime mover efficiency and reduction of fuel costs, weight and space savings, unity power factor operation of generators, lower transmission losses, faster and simpler parallel connection of generators and simpler implementation of energy storage. Finally, some of the challenges introduced with the DC technology will also be explored. These include: high short-circuit currents, DC protection concept and expensive and possibly non-profitable energy storage system solutions.

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Increased Operational Performance of OSVs by Onboard DC Grid

Cited by 33 publications

References 0 publications

Design of a Solid-State Circuit Breaker for a DC Grid-Based Vessel Power System

Design of a Solid-State Circuit Breaker for a DC Grid-Based Vessel Power System

Optimal Design and Power Management in Shipboard System

Advantages of using a DC power system on board ship

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