Optimized efficiency of all-electric ships by dc hybrid power systems

被引：142
|
作者：
Zahedi, Bijan [1 ]
Norum, Lars E. [1 ]
Ludvigsen, Kristine B. [2 ]
机构：
[1] Norwegian Univ Sci & Technol NTNU, Dept Elect Power Engn, N-7491 Trondheim, Norway
[2] DNV, Maritime Transport, Res & Innovat, N-1322 Hovik, Norway
来源：
JOURNAL OF POWER SOURCES | 2014年 / 255卷
关键词：
Efficiency optimization; Shipboard power system; dc distribution; Fuel saving; All-electric Ships; ENERGY MANAGEMENT; FUEL-CELL; CONTROL STRATEGY; VEHICLE; MODELS;
D O I：
10.1016/j.jpowsour.2014.01.031
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hybrid power systems with dc distribution are being considered for commercial marine vessels to comply with new stringent environmental regulations, and to achieve higher fuel economy. In this paper, detailed efficiency analysis of a shipboard dc hybrid power system is carried out. An optimization algorithm is proposed to minimize fuel consumption under various loading conditions. The studied system includes diesel engines, synchronous generator-rectifier units, a full-bridge bidirectional converter, and a Li-Ion battery bank as energy storage. In order to evaluate potential fuel saving provided by such a system, an online optimization strategy for fuel consumption is implemented. An Offshore Support Vessel (OSV) is simulated over different operating modes using the online control strategy. The resulted consumed fuel in the simulation is compared to that of a conventional ac power system, and also a dc power system without energy storage. The results show that while the dc system without energy storage provides noticeable fuel saving compared to the conventional ac system, optimal utilization of the energy storage in the dc system results in twice as much fuel saving. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：341 / 354
页数：14
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