检索结果-内蒙古大学图书馆

An Equivalent Fuel Consumption Minimizing Strategy for Fuel Cell Ships Considering Power Degradation

Energy engineering 2025年第4期122卷 1425-1442页

作者： Diju Gao Shuai Li Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai Maritime UniversityShanghai201306China

To safeguard the ocean ecosystem,fuel cells are excellent candidates as the primary energy supply for marine vessels due to their high efficiency,low noise,and ***,fuel cells in hybrid power systems are highly susceptible to load transients,which can severely damage fuel cells and shorten their ***,the formulation of energy management strategies accounting for power degradation is crucial and *** this study,an improved strategy for equivalent consumption minimization strategy(ECMS)considering power degradation is *** improved energy control strategy effectively controls the energy distribution of hydrogen fuel cells,lithium batteries,and supercapacitors in hybrid power *** proposed control strategy combines the ECMS with an adaptive *** main objective of the ECMS is to allocate power to the fuel cell systems and energy storage systems(ESS)to stabilize the power output of fuel cells,prolong their service life,and reduce the hydrogen consumption in fuel *** adaptive filteringmethod,by low-pass filtering of the energy in the energy storage system,is used to allocate power between lithium batteries and supercapacitors to minimize the effect of transient and peak energy output on the lifespan of lithium *** verify the superiority of the control strategy,a mathematical model for the hybrid power system is *** comparison to traditional ECMS and traditional ECMS considering degradation,the improved ECMS considering power degradation shows better performance in the overall economy,the durability of fuel cells and batteries,and system dynamic performance.

关键词： Energy control strategy fuel cell hybrid power ships batteries supercapacitors

来源：评论

学校读者我要写书评

暂无评论

Method for Identifying Critical Branches of Cascading Failures in Complex Power Grids Based on Comprehensive Brittleness 43

Method for Identifying Critical Branches of Cascading Failur...

引用

43rd Chinese control Conference, CCC 2024

作者： Tian, Xiao Liu, Zhiquan Shanghai Maritime University Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai201306 China

ISBN: (纸本)9789887581581

The extensive integration of wind power into the grid will exert a profound influence on the stability of the power system. To address the limitations of the current critical branch identification model, which fails to consider both the power grid structure and operation state, neglects voltage, and employs a single index weight assignment mode, this paper proposes a method for identifying critical branches through a comprehensive brittleness. From a brittleness perspective, this study establishes indices for brittle electric betweeness, brittle power flow distribution entropy, brittle power flow transfer entropy, and brittle voltage deviation taking into account relevant electrical impact factors. The game combination weighting method is proposed, determining the optimal combination weight of intuitionistic fuzzy analytic network process and entropy weight method integrating the four indices to obtain the comprehensive brittleness index. Finally, the proposed integrated brittleness identification method is verified using the IEEE39 bus system, demonstrating its effectiveness and feasibility in identifying key branches comprehensively and reasonably. © 2024 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Brittleness

来源：评论

学校读者我要写书评

暂无评论

Set-membership Filtering for LPV-based Port Crane Systems with Unknown-but-bounded Disturbances 14

Set-membership Filtering for LPV-based Port Crane Systems wi...

引用

14th Asian control Conference, ASCC 2024

作者： Wang, Zhenxiang Zhang, Yilian Xu, Weimin Shanghai Maritime University Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai201306 China

ISBN: (纸本)9789887581598

This paper addresses the state estimation problem of port crane systems and proposes a modified set-membership filtering method to obtain real-time state estimation of the crane. Firstly, considering the nonlinear characteristic of the crane system, a discrete Linear Parameter Varying (LPV) crane model is established based on the dynamic characteristic of the crane system. At the same time, the possible noises in the crane system are modeled as unknown but bounded (UBB) noises to describe the uncertainty of the external environment and internal factors of the crane system. Furthermore, according to the constructed LPV-based crane model with UBB noises, a set-membership filter is designed to obtain the real-time state estimation ellipsoid for the crane system, and the optimal state estimation domain is obtained through recursive convex optimization method. Finally, the feasibility and effectiveness of the proposed set-membership filtering method in state estimation of port crane system are verified through simulation experiments. © 2024 Asian control Association.

关键词： Convex optimization

来源：评论

学校读者我要写书评

暂无评论

An Energy control Strategy in Hybrid Electric Ships Considering the Battery Life 3

An Energy Control Strategy in Hybrid Electric Ships Consider...

引用

3rd IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2023

作者： Yan, Yucheng Gao, Diju Jiang, Haoyang Shanghai Maritime University Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai China

ISBN: (纸本)9798350324754

Considering the effect of battery life on the full-life-cycle cost of hybrid electric ships (HES), an energy control strategy has been proposed, with the minimization of fuel consumption and battery's health degradation as the optimization objective. Firstly, the double-objectives cost function is established based the diesel engine fuel consumption model, power battery internal resistance model and battery life model. Then, the dynamic programming (DP) algorithm is employed to achieve the global optimization and the optimal weight coefficient is selected according to the optimization results. The experimental results show that, compared with the control strategy based on the single-objective optimization of fuel consumption or the control strategy based on fuzzy logic, the proposed strategy can reduce the fuel consumption and further extend the battery life, and it has good feasibility and practicality. © 2023 IEEE.

关键词： Dynamic programming

来源：评论

学校读者我要写书评

暂无评论

Path-planning algorithm for small environmental surveillance unmanned surface vehicles

引用

Applied Soft Computing 2025年 178卷

作者： Wang, Zhenyang Yang, Ping Gao, Diju Bao, Chunteng Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai Maritime University Shanghai201306 China

Ports are essential hub facilities that provide support for economic development. However, the construction, development, and operation of ports increase the risk of environmental pollution in marine areas. Small environmental surveillance unmanned surface vehicles (ESUSVs) are being deployed to monitor port environments and prevent pollution. This study proposes a bidirectional elastic force contraction algorithm (BEFCA) and a Lévy flight weighted whale optimization (LFWWOA) and BEFCA hybrid algorithm (LFWWOA-BEFCA) to solve the path planning problem of ESUSVs. BEFCA solves the slow convergence and unsmooth path-characteristic problem of the elastic force contraction algorithm (EFCA) by employing a bidirectional search strategy and ship kinematics to smoothen the turning points in the path, respectively. LFWWOA uses a Lévy flight-based strategy in the global exploration phase of the whale optimization algorithm (WOA) to increase the solution diversity and improves the global and local search performance by modifying the coefficient calculation method and adding adaptive weighting coefficients. Thirteen benchmark functions were selected for the LFWWOA optimization performance experiments and compared with other intelligence algorithms. The results demonstrate that the proposed algorithm achieved the best global performance. Therefore, LFWWOA was used to optimize the BEFCA parameters, which resulted in higher-quality planned paths. Simulation experiments of real scenarios and complex environments showed that the path lengths and algorithm runtimes of BEFCA and LFWWOA-BEFCA outperformed those of the state prediction rapidly exploring random trees (spRRT) and spRRT-informed algorithms, respectively. The planned paths are consistent with the motion characteristics of ESUSVs, which can be used directly for tracking. The findings of this study indicate that shorter travel paths can be planned for ESUSVs in harbors for environmental monitoring, effectively solving the diff

关键词： marine pollution

来源：评论

学校读者我要写书评

暂无评论

Understanding bus passengers' vibrational discomfort based on graphical modelling: a field experiment

引用

International Journal of Vehicle Noise and Vibration 2024年第2期20卷 119-138页

作者： Xie, Minghui Fan, Jialin Wei, Sen Wang, Yuanqing College of Transportation Engineering Chang'an University China College of Transportation Engineering Tongji University China Key Laboratory of Transport Industry of Management Control and Cycle Repair Technology for Traffic Network Facilities in Ecological Security Barrier Area Chang'an University China

To understand the vibrational discomfort experienced by passengers and improve bus service quality, we conducted field experiments to collect triaxial acceleration data from 18 bus trips and the riding responses of 22 participants simultaneously in Xi'an, China. Compared with the fuzzy evaluation based on ISO 2631, this paper innovatively established the coding rule of sharp acceleration change and constructed the graphical matrix for vibrational discomfort. Not only was the degree of discomfort evaluated, but the parameters causing discomfort and their interrelationships were quantitatively determined through statistical analysis and ridge regression. The results revealed that sharp changes in acceleration are significantly related to vibrational discomfort. The probability of graphical coding occurrence for acceleration changes is heterogeneous and results in different levels of discomfort and duration of motion sickness. This paper provides valuable insights into improving riding comfort for bus passengers. © 2024 Inderscience Enterprises Ltd.

关键词： Diseases

来源：评论

学校读者我要写书评

暂无评论

Method for Identifying Critical Branches of Cascading Failures in Complex Power Grids Based on Comprehensive Brittleness

Method for Identifying Critical Branches of Cascading Failur...

引用

第43届中国控制会议

作者： Xiao Tian Zhiquan Liu Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai Maritime University

ISBN: (数字)9789887581581

ISBN: (纸本)9798350366907

The extensive integration of wind power into the grid will exert a profound influence on the stability of the power *** address the limitations of the current critical branch identification model,which fails to consider both the power grid structure and operation state,neglects voltage,and employs a single index weight assignment mode,this paper proposes a method for identifying critical branches through a comprehensive *** a brittleness perspective,this study establishes indices for brittle electric betweeness,brittle power flow distribution entropy,brittle power flow transfer entropy,and brittle voltage deviation taking into account relevant electrical impact *** game combination weighting method is proposed,determining the optimal combination weight of intuitionistic fuzzy analytic network process and entropy weight method integrating the four indices to obtain the comprehensive brittleness ***,the proposed integrated brittleness identification method is verified using the IEEE39 bus system,demonstrating its effectiveness and feasibility in identifying key branches comprehensively and reasonably.

关键词： wind power integration,Brittleness game theory intuitionistic fuzzy analytic network process

来源：评论

学校读者我要写书评

暂无评论

Circuit coupling model containing equivalent eddy current loss impedance for wireless power transfer in seawater

引用

International Journal of Circuits, Systems and Signal Processing 2021年 15卷 410-416页

作者： Niu, Wangqiang Ye, Chen Gu, Wei Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai Maritime University Shanghai201306 China

Nowadays, as the whole world put more emphasis on ocean resource exploration, the use of automatic underwater vehicles (UAVs) comes to be increasingly frequent. Inductive wireless power transfer (IWPT), as a power transfer solution with high safety and flexibility, is quite promising applied in UAV power supply. However, when applied underwater, IWPT efficiency decreases due to eddy current loss (ECL) caused by high conductivity of water medium. In order to analyze IWPT output characteristics in seawater, this paper proposes a coupling circuit model involving equivalent eddy current loss impedance (EECLI), which is derived via threecoil model. On the one hand, it is found that splitting frequency still exists in IWPT under seawater. On the other hand, EECLI is independent to coil distance, but proportional to operation frequency. The validity of the proposed model for IWPT system with coils in small size (coil outer diameter 12 cm, system resonant frequency 570 kHz) is verified by experiment, which means it is available for IWPT system design and analysis. © 2021, North Atlantic University Union NAUN. All rights reserved.

关键词： Resonant circuits

来源：评论

学校读者我要写书评

暂无评论

Applied systems theory: Wind turbine output power prediction based on wind energy utilization coefficient

引用

International Journal of Circuits, Systems and Signal Processing 2021年 15卷 356-366页

作者： Wang, Xiaotong Niu, Wangqiang Gu, Wei Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai Maritime University Shanghai201306 China

The output power of a wind turbine is the most critical variable reflecting the operating status of the turbine. To improve the interpretability of the prediction model, a segmented output power method based on wind energy utilization coefficient is established. First, the wind energy conversion system of the wind turbine is given, and the SCADA data of a wind turbine is visually analyzed. Then it is proposed to separate the data into three groups according to different operating regions of wind turbines: the Maximum Power Point Tracking region, the rotator speed control region, and the power control region. In the Maximum Power Point Tracking region, wind energy utilization coefficient is found by a fitted cubic polynomial of the tip speed ratio. In the rotator speed control region, a modeling method for determining wind energy utilization coefficient through dynamic labels is designed. In the power control region, the output power is kept at the rated value. Finally, the 3 models are connected so that time-series data can be handled. The SCADA data of a 2.1MW wind turbine is used to verify the above models. The performance of these models is given in the form of Root Mean Square Error, indicating that the output power predicted by this method has good accuracy. The segmented output power model based on wind energy utilization coefficient can simulate the operation process of wind turbines, and has good accuracy and interpretability. © 2021, North Atlantic University Union NAUN. All rights reserved.

关键词： Wind turbines

来源：评论

学校读者我要写书评

暂无评论

Set-membership Filtering for LPV-based Port Crane Systems with Unknown-but-bounded Disturbances

Set-membership Filtering for LPV-based Port Crane Systems wi...

引用

Asian control Conference

作者： Zhenxiang Wang Yilian Zhang Weimin Xu Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai Maritime University Shanghai China

ISBN: (数字)9789887581598

ISBN: (纸本)9798331540845

关键词： Sufficient conditions Cranes Uncertainty Filtering Noise Real-time systems Convex functions

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：