Power-Electronic-Based DC Distribution Systems for Electrically Propelled Vessels: A Multivariable Modeling Approach for Design and Analysis

Alacano, Argiñe; Valera, Juan José; Abad, Gonzalo; Izurza, Pedro

doi:10.1109/jestpe.2017.2730855

Cited by 15 publications

(9 citation statements)

References 28 publications

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“…The conduction losses of an IGBT are the product of the collector current (I C (t)) and the corresponding voltage drop at that collector current (V CE (I C (t))), which is defined by the output characteristic of the IGBT (7). In the case of the diode, the conduction losses are the product of the current (I F (t)) and the drop voltage (V F (I F (t))) (8). As in the IGBT, the corresponding voltage drop on the diode at a certain current is given by its output characteristic [27].…”

Section: Design Guidelines and Recommendationsmentioning

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: Design Guidelines and Recommendationsmentioning

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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“…Consequently to the recent developments in the technology of power electronics, onboard DC power systems have received a great interest and have been widely used for transportation electrification such as electric vehicles, more electric aircrafts and electrified ships [1], [2], [3]. Shipboard DC power systems have been recently proposed as an alternative propulsion system in the marine industry because of the natural flexibility and improved operability of DC power system compared to the conventional AC system, which allows the DC connected generators to be operated with their optimal speed at the required load level and brings significant economical and environmental values for the shipping industry [4].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Stability Analysis of Onboard DC Power System for Hybrid Electric Ships

Park

Zadeh

2019

2019 IEEE Transportation Electrification Conference and Expo (ITEC)

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This paper presents the dynamic modeling and stability analysis of the onboard DC power system, applicable to hybrid electric ships. The system topology is established with a special focus on the integration of the energy carriers with power electronic converters. The modeling of the AC/DC rectifier, DC/DC converter, filters and energy storage systems (ESS), such as battery and supercapacitor, is investigated. AC/DC rectifier is modeled with decoupling control through an LCL filter, and the DC/DC converter modeling is compared with the state-space averaging method and generalized averaging method. The performance of the integrated model is presented both in charging mode and in discharging mode of the energy storage system and the results show the effectiveness of the controllers and the power regulation of the ESSs. In the end, the limitation of the load is obtained by the stability analysis.

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“…In addition, it accepts all types of widely extended generic analyses such as the Nyquist stability criterion and many others. Finally, it has to be mentioned that the modeling philosophy followed in this article is an adaptation to AC grids of the modeling philosophy already applied in DC grids and already proven and published in Reference [16].…”

Section: Introductionmentioning

confidence: 99%

Analytical Modeling Approach to Study Harmonic Mitigation in AC Grids with Active Impedance at Selective Frequencies

et al. 2018

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This paper presents an analytical model, oriented to study harmonic mitigation aspects in AC grids. As it is well known, the presence of non-desired harmonics in AC grids can be palliated in several manners. However, in this paper, a power electronic-based active impedance at selective frequencies (ACISEF) is used, due to its already proven flexibility and adaptability to the changing characteristics of AC grids. Hence, the proposed analytical model approach is specially conceived to globally consider both the model of the AC grid itself with its electric equivalent impedances, together with the power electronic-based ACISEF, including its control loops. In addition, the proposed analytical model presents practical and useful properties, as it is simple to understand and simple to use, it has low computational cost and simple adaptability to different scenarios of AC grids, and it provides an accurate enough representation of the reality. The benefits of using the proposed analytical model are shown in this paper through some examples of its usefulness, including an analysis of stability and the identification of sources of instability for a robust design, an analysis of effectiveness in harmonic mitigation, an analysis to assist in the choice of the most suitable active impedance under a given state of the AC grid, an analysis of the interaction between different compensators, and so on. To conclude, experimental validation of a 2.15 kA ACISEF in a real 33 kV AC grid is provided, in which real users (household and industry loads) and crucial elements such as wind parks and HVDC systems are near interconnected .

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Power-Electronic-Based DC Distribution Systems for Electrically Propelled Vessels: A Multivariable Modeling Approach for Design and Analysis

Cited by 15 publications

References 28 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

Dynamic Modeling and Stability Analysis of Onboard DC Power System for Hybrid Electric Ships

Analytical Modeling Approach to Study Harmonic Mitigation in AC Grids with Active Impedance at Selective Frequencies

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