基于超级电容的车客渡船能量管理策略

针对车客渡船航行过程中因推进电机需要频繁大尺度启动和制动而造成船舶电网易产生较大波动、能量管理复杂的问题,提出一种基于超级电容的车客渡船能量管理策略.采用模糊自适应(PID)控制策略对储能系统充放电进行控制,以直流母线电压为目标,通过Matlab/Simulink建立仿真模型,并搭建超级电容能量回收试验平台,验证该能量管理策略的可行性.结果表明,超级电容能对推进电机制动能量进行缓冲存储,提高能量的利用率,同时还可以减小船舶电网的波动,避免发电机组频繁调节,提高电网的安全性.     

车客渡船复合储能系统及能量管理策略设计与研究

针对严格的船舶碳排放要求和车客渡船特殊的航行工况,提出锂电池和超级电容组成的复合储能系统,并以系统经济最佳为目的设计复合储能系统的最优容量配置。基于锂电池和超级电容的特性,提出适用于车客渡船的能量管理策略。通过MATLAB/Simulink建立仿真模型,验证典型航行工况下复合储能系统容量配置和能量管理策略的可行性。仿真结果表明,复合储能系统的容量设计及能量管理策略可以满足典型航行工况和重载工况的需求。     

基于超级电容的水下平台混合能源系统研究

针对燃料电池发电系统输出特性偏软,动态响应慢以及负载具有随机性、间歇性、波动性等问题,在水下平台混合动力系统中加入了超级电容。采用双向DC/DC变换器作为超级电容充放电主拓扑,设计了基于PI控制器的双闭环控制,实现了母线和超级电容之间能量的双向流动。运用PSIM软件对超级电容正常工作放电和充电2种工况进行仿真。仿真结果表明：通过双向DC/DC变换器可在系统重载时将超级电容存储的电能释放出来,在系统轻载、减速或制动等工况下降回馈再生电能存储至超级电容中,整个过程可以使大功率负载安全地接入系统,减小母线电压振荡,提高能量利用率。     

一种用于波浪补偿系统的超级电容储能装置研究与设计

研究一种用于波浪补偿系统的超级电容储能装置,通过利用双向DC/DC变换器将直流母线与超级电容连接起来,致力于解决波浪补偿后回馈电能的利用问题。选择三相半桥型的非隔离型双向DC/DC变换器作为传输电路,以直流母线电压的变化为参考,通过设计了双向DC/DC变换器的双闭环控制策略,来达到母线电压稳定的目的。当直流母线电压升高,控制超级电容充电,当直流母线电压降低,控制超级电容放电。实验验证了所提出的基于DSP的双向DC/DC变换器的超级电容储能装置控制策略的有效性。     

超级电容牵引车在智慧绿色港口建设中的应用研究

根据工程项目的作业流程和智慧绿色港口的需要,通过对火车牵引车的基础设施投入、节能减排、环境适应性等方面进行综合性能分析和比较,确定了储能式牵引车作为牵车系统设计方案;根据实际工程的使用环境及使用方需求,通过对比储能式牵引车两种动力方案的特点,最终选用超级电容牵引车作为储能式火车牵引车方案。依据超级电容牵引车的工作要求和供电需要,从箱式变电站、地面充电桩、受电弓和超级电容四个部分对其供电系统进行了详细设计,以满足超级电容牵引车的充电和工作要求,研究结果对新能源牵引车在智慧绿色港口的应用提供了电力保障。     

基于超级电容储能的船舶电力推进系统鲁棒控制策略

在船舶电力推进系统中加入超级电容储能装置,能够实现对电网电能的回馈与吸收,从而使整个电网运行于最佳状态。因此如何实现对同步发电机及超级电容的控制关系到整个电网的质量。本文运用鲁棒控制理论设计出H∞混合灵敏度控制器对同步发电机及超级电容进行跟踪控制,然后在simulink中建立模型来验证所设计控制器的控制效果。结果表明,所设计控制器能够实现很好的跟踪效果。     

创新环保电池助力生态航道建设

正近日,航标专用超级电容电池研制与应用项目验收评审会在长江镇江航道处召开。长江南京航道局、长江镇江航道处、联合绿业储能技术镇江有限公司代表及江苏大学特邀专家参加了此次会议。航标专用超级电容电池是镇江航道处和联合绿业储能技术镇江有限公司联合研制的。评审会上,评审组听取了研制单位的汇报,审阅了有关材料,并对项目部分内容进行了质询和讨论。评审组一致认为验收材料齐全,符合项目验收要求。航标专用超级电容电池具有高效储能、安全     

能量管理策略在混合动力船舶上的应用

混合动力船舶电力推进系统是指引入蓄电池和超级电容联合为船舶电力系统供电的船舶电力系统,燃料电池、蓄电池和超级电容的引入能够有效降低船舶电力系统的能源消耗,提高船舶电力系统的供电能力。本文结合蓄电池和超级电容的工作原理,建立了混合动力船舶电力推进系统数字仿真系统,研究船舶电力系统复杂工况下运行的可靠性。通过比较有限状态机控制策略(SMCS)和等效燃料消耗最小控制策略(ECMS),对混合动力船舶电力推进系统进行控制,结果表明:ECMS控制策略耗能最少,总效率最高,有效提高了船舶运行的经济性。     

超级电容技术在港口机械中的应用研究

通过实验，对超级电容器与电池、传统电容在比功率、比能量和使用寿命方面进行比较，结果表明，以超级电容作为储能元件的混合动力系统在节能环保等方面具有很大的优越性，在港口机械中有广阔的应用前景。     

燃料电池混合动力船舶的功率跟踪控制研究

提出了一种基于模型预测控制的燃料电池超级电容混合动力船舶的功率跟踪控制策略。在提升了系统的瞬态功率响应能力的同时,实现了对超级电容中能量的滚动储备;在平抑燃料电池系统的端口功率波动的同时,实现了系统的可靠运行。仿真结果表明了所提出的控制策略的有效性,对比不同控制参数的情况,验证了控制器设计的有效性。     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

Catalyzing Coastal Management in Kenya and Zanzibar: Building Capacity and Commitment

Site-based projects were initiated in Chawka Bay-Paje, Zanzibar, and Nyali-Bamburi-Shanzu, Kenya, to demonstrate the benefits of an integrated coastal management (ICM) approach for addressing coastal issues such as tourism development and enhancement of resource-dependent village economies in eastern Africa. A two-year, multidonor project used three primary strategies to make rapid, but sustainable, progress toward ICM. These included using interagency government teams for ICM planning, adopting an internationally recognized framework for ICM as a project ''road map,'' and explicitly incorporating capacity-building strategies into all aspects of the project. Within two years, integrated ICM action strategies, prepared through participatory processes, were being implemented at both sites, and both teams were working to expand the scale and scope of ICM in their nation. More importantly, the project helped create committed, capable, interagency groups that continue to work together to address urgent ICM issues.     

舰艇反鱼雷技术

对目前舰艇反鱼雷技术中的非杀伤、软杀伤和硬杀伤等比较先进的手段进行了阐述,并在此基础上分析研究了舰艇反鱼雷技术的发展趋势。     

A simplified method for reliability- and integrity-based design of engineering systems and its application to offshore mooring systems

This paper presents a simplified method for the reliability- and the integrity-based optimal design of engineering systems and its application to offshore mooring systems. The design of structural systems is transitioning from the conventional methods, which are based on factors of safety, to more advanced methods, which require calculation of the failure probability of the designed system for each project. Using factors of safety to account for the uncertainties in the capacity (strength) or demands can lead to systems with different reliabilities. This is because the number and arrangement of components in each system and the correlation of their responses could be different, which could affect the system reliability. The generic factors of safety that are specified at the component level do not account for such differences. Still, using factors of safety, as a measure of system safety, is preferred by many engineers because of the simplicity in their application. The aim of this paper is to provide a simplified method for design of engineering systems that directly involves the system annual failure probability as a measure of system safety, concerning system strength limit state. In this method, using results of conventional deterministic analysis, the optimality factors for an integrity-based optimal design are used instead of generic safety factors to assure the system safety. The optimality factors, which estimate the necessary change in average component capacities, are computed especially for each component and a target system annual probability of system failure using regression models that estimate the effect of short and long term extreme events on structural response. Because in practice, it is convenient to use the return period as a measure to quantify the likelihood of extreme events, the regression model in this paper is a relationship between the component demands and the annual probability density function corresponding to every return period. This method accounts for the uncertainties in the environmental loads and structural capacities, and identifies the target mean capacity of each component for maximizing its integrity and meeting the reliability requirement. In addition, because various failure modes in a structural system can lead to different consequences (including damage costs), a method is introduced to compute optimality factors for designated failure modes. By calculating the probability of system failure, this method can be used for risk-based decision-making that considers the failure costs and consequences. The proposed method can also be used on existing structures to identify the riskiest components as part of inspection and improvement planning. The proposed method is discussed and illustrated considering offshore mooring systems. However, the method is general and applicable also to other engineering systems. In the case study of this paper, the method is first used to quantify the reliability of a mooring system, then this design is revised to meet the DNV recommended annual probability of failure and for maximizing system integrity as well as for a designated failure mode in which the anchor chains are the first components to fail in the system.     

Community-Based Management for Sustainable Fisheries Resources in Phang-nga Bay,Thailand

Fishing communities, the Government of Thailand Department of Fisheries, local nongovermnental organizations, universities, the Food and Agriculture Organization of the United Nations (FAO), and FAO's Bay of Bengal Program have undertaken a partnership in management of Phang-nga Bay's coastal resources. It is the first project of its kind in Thailand, and although still in the early stages, offers insights that may contribute to our knowledge of how we can improve our management of coastal resources, including the importance of (1) building relationships within the governance process; (2) combining education, enforcement, and economic incentives to achieve compliance; (3) implementing solutions early; and (4) government support of community-based decisions. These insights reinforce trends emerging in other coastal management projects in the Asian region.     

含裂纹钢板复合材料修补强度和刚度数值分析

用ANSYS有限元分析软件对复合材料补片修复含边裂纹和中心裂纹钢板的强度和刚度进行了数值分析.引入相对刚度的概念,研究了钻有止裂孔裂纹的长度对损伤钢板相对刚度的影响,分析了损伤钢板刚度复合材料贴片修补效果;引入屈服载荷提高率的概念,分析了损伤钢板强度的修复效果.     

混凝土道路、堆场面层裂缝的产生与防治

从混凝土道路、堆场的各个结构层分析裂缝产生的原因,并针对性地说明预防措施,阐述裂缝维修方法。     

单相PWM整流器的建模与仿真分析

文章详细分析了单相VSR型PWM整流器的整流原理,建立了电流内环,电压外环的单相VSR型PWM整流控制器的数学模型和逻辑框图。在MATLAB／Simulink软件环境中进行了仿真,分析了模型的可行性。