检索结果-内蒙古大学图书馆

Chloride ion battery:A new emerged electrochemical system for next-generation energy storage

Journal of Energy Chemistry 2024年第1期88卷 154-168,I0004页

作者： Shulin Chen Lu Wu Yu Liu Peng Zhou Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070HubeiChina State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and NanotechnologyWuhan University of Science and TechnologyWuhan 430081HubeiChina

In the scope of developing new electrochemical concepts to build batteries with high energy density,chloride ion batteries(CIBs)have emerged as a candidate for the next generation of novel electrochemical energy storage technologies,which show the potential in matching or even surpassing the current lithium metal batteries in terms of energy density,dendrite-free safety,and elimination of the dependence on the strained lithium and cobalt ***,the development of CIBs is still at the initial stage with unsatisfactory performance and several challenges have hindered them from reaching *** this review,we examine the current advances of CIBs by considering the electrode material design to the electrolyte,thus outlining the new opportunities of aqueous CIBs especially combined with desalination,chloride redox battery,*** respect to the developing road of lithium ion and fluoride ion batteries,the possibility of using solid-state chloride ion conductors to replace liquid electrolytes is tentatively *** beyond,perspectives and clear suggestions are concluded by highlighting the major obstacles and by prescribing specific research topics to inspire more efforts for CIBs in large-scale energy storage applications.

关键词： Chloride ion battery Anion shuttling Conversion reaction Chloride redox

来源：评论

学校读者我要写书评

暂无评论

Equivalent Modeling of Distributed Photovoltaic Clusters with Various Voltage Support Functions 10

Equivalent Modeling of Distributed Photovoltaic Clusters wit...

引用

10th IEEE International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia

作者： Zhang, Weiguo Liu, Xuhua Shi, Xiaojie Wang, Zhiqiang Lin, Lei Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan China

ISBN: (纸本)9798350351330

Simulation serves as a crucial tool for analyzing the operational status of power grids. To address the challenges in high model complexity and long simulation time posed by large systems with numerous nodes, this paper proposes an equivalent modeling method tailored for distributed photovoltaic (PV) clusters. Targeting an effective voltage regulation, this method utilizes the embedded voltage support control strategy as a clustering index to distinguish between different PV systems. The Fuzzy C-Means (FCM) clustering algorithm is then employed to obtain the clustering results of PV systems, and those within the same cluster are merged into one equivalent PV system, forming a multi-machine aggregated model. By comparing voltage support characteristics of the aggregated model with models obtained using alternative methods through simulation, the effectiveness of the proposed equivalent method is validated. © 2024 IEEE.

关键词： Clustering algorithms

来源：评论

学校读者我要写书评

暂无评论

Simultaneously enhancing erosion and compression resistance:designing AlCoCrFeNi high-entropy alloy strengthened Ag-based contacts

引用

Rare Metals 2024年第9期43卷 4476-4492页

作者： Xiao-Yang Xue Zhe Wang Hui-Ling Nie Zhao Yuan Jun Wang Chang-Hu Xu Kai Wen Cong-Hao Yu School of Materials Science and Engineering Xi’an Polytechnic UniversityXi’an 710048China School of Physics Xi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Pulsed Power Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Designing microstructures and unveiling dynamic erosion mechanisms remain important challenges for Ag-based *** simultaneously enhance erosion and compression resistance,an Al Co Cr Fe Ni high-entropy alloy(HEA)is introduced into Ag-based materials to fabricate novel Ag-HEA contacts with island-and skeletonrestricted *** arc erosion experimental results reveal that the skeleton-restricted HEA microstructure is the key factor in reducing the hill and crater morphologies of the contact surface,effectively delaying material transfer between the movable and stationary *** molten bridge evolution and compressive deformation behavior of Ag-HEA contacts with various microstructures are investigated using molecular dynamics(MD)*** results indicate that the constraint of Ag atom diffusion in the molten pool and the involvement of HEA atoms in the molten bridge are the primary mechanisms for improving erosion *** skeleton-restricted HEA microstructure reduces the total energy and structural stability of the molten bridge system and promotes its fracture and ***,the synergistic effect of the twin and Lomerz–Cottrell lock structures can hinder dislocation glide,generating dispersed and small-area stacking faults in the Ag matrix and mitigating the concentration of shear ***,the skeleton-restricted HEA microstructure contributes positively to compression *** study presents a novel approach to designing Ag-based contacts.

关键词： Electrical contact materials High entropy alloys Arc erosion Molecular dynamics Microstructures

来源：评论

学校读者我要写书评

暂无评论

The Impact Analysis of Line Inductance on System Amplitude and Frequency Stability in the Converter Interfaced System 6

The Impact Analysis of Line Inductance on System Amplitude a...

引用

6th International Conference on Power and Energy technology, ICPET 2024

作者： Xu, Qiumeng Wang, Sicheng Yuan, Xiaoming State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9798350375855

With the transition to cleaner energy sources, a high proportion of renewable devices often needs to be connected to the grid through long transmission lines, which increases the risk of system instability. The system is composed of device and network, both of which have influence on system stability. The impact of device control parameters on system stability has been widely studied, but the impact of network on system stability should not be overlooked. This paper focuses on the line inductance in the network. Firstly, it elucidates the implications of the system Amplitude and Frequency (A&F) stability, considering the dynamic characteristics of both device and the network. Secondly, it analyzes the high-order dynamic characteristics of the inherent relationship between the excitation of the amplitude/frequency of internal voltage and the response of active/reactive current, under the constraints imposed by line inductance in the network. This analysis reveals the essence of the dominant feature of this relationship, which is influenced by the system oscillation frequency. Finally, the system oscillation frequency was analyzed through closed-loop simulation, which affects the A&F stability of the system by affecting the energy storage capacity of the line inductance. This paper establishes a general understanding of the energy storage capacity of line inductor in the grid and lays the foundation for further understanding and analyzing of the mechanism of power system instability problems. © 2024 IEEE.

关键词： Frequency stability

来源：评论

学校读者我要写书评

暂无评论

A Single-Stage Series Resonance Dual-Active-Bridge AC-DC Converter With Wide Soft-Switching Range

A Single-Stage Series Resonance Dual-Active-Bridge AC-DC Con...

引用

2024 Energy Conversion Congress and Expo Europe, ECCE Europe 2024

作者： Wang, Fangyong Bao, Junyang Li, Yong Wang, Yadong Liu, Bangyin Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan China

ISBN: (纸本)9798350364446

In this paper, a novel single-stage isolated AC-DC converter is introduced to reduce the number of switching devices by sharing the active bridge of the interleaved totem-pole circuit with the secondary side of the bridge of a series resonant circuit. However, this configuration poses challenges in achieving zero voltage switching (ZVS) for AC-side switching. Concurrently, the reactive circulating current in the resonant tank of the series resonant circuit contributes to increased circuit losses. Therefore, a modulation scheme is proposed to realize the wide range ZVS of all switches in the grid voltage cycle while achieving a wider range of AC-DC conversion. Additionally, a minimum current optimization model is proposed to effectively minimize the circulating current in the resonant tank. Finally, a 1kW prototype is constructed to experimentally verify the theoretical analysis and assess the effectiveness of the proposed modulation scheme. © 2024 IEEE.

关键词： Resonant circuits

来源：评论

学校读者我要写书评

暂无评论

Denormalized Database of HUST-PTF Beamline Control System 11

Denormalized Database of HUST-PTF Beamline Control System

引用

11th International Forum on Electrical engineering and Automation, IFEEA 2024

作者： Liu, Chengyong Li, Dong Qin, Bin Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan China

ISBN: (纸本)9798331516611

Huazhong University of Science and technology is developing a proton therapy facility (HUST-PTF) based on a superconducting cyclotron. To achieve the scheduling and control of various underlying devices in the beamline during beam transport, we designed a beamline control system (BCS) with distributed architecture based on OPC UA. Initially, we developed the Beam Control System (BCS) and built the control parts for underlying hardware, such as magnet power supply, degrader and beam diagnostics. However, due to the lack of beam database, we are unable to read and store data from the underlying hardware during beam commissioning, making it impossible to achieve subsequent automatic configuration for beam therapy. Therefore, we further design and develop a denormalized beam database based on the actual architecture, beam commissioning, and therapy requirements of HUST-PTF. By demoralizer, we store data in as few tables as possible, reducing join operations between tables, minimizing disk I/O operations, to accelerate data query speed. We also test the performance of beam database, verifying that the denormalized beam database could meet the actual beam commissioning and therapy requirements of HUST-PTF. © 2024 IEEE.

关键词： Proton beam therapy

来源：评论

学校读者我要写书评

暂无评论

Research on Loss Optimization of AC-Excitation Synchronous Condenser Under Multi-Condition Constraints

Research on Loss Optimization of AC-Excitation Synchronous C...

引用

2024 IEEE International Conference on Electrical Energy Conversion Systems and Control, IEECSC 2024

作者： Liu, Yinping Yu, Kexun Hu, Jiabing Chen, Xiao Chen, Xi Xie, Xianfei Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan China

ISBN: (纸本)9798350389357

AC-Excitation Synchronous Condenser (AC SynCon), which has the ability to provide active and reactive power synchronously, shows great potential in the application of new energy power system. To minimize loss and meet the performance requirements of ACSynCon under multiple operating conditions, this paper proposes a multi-objective hierarchical optimization method. The loss under long-term no-load operation, long-term phase-lagging operation, and short-time tripled active overload operation are selected as the optimization objectives. Based on the proposed integrated sensitivity analysis of optimization parameters, parameter scanning method is adopted for the low integrated sensitivity parameters to obtain the optimal value. At the same time, finite element analysis is adopted to obtain the high integrated sensitivity parameters database for the Kriging surrogate model training. Finally, NSGA-II algorithm is used to optimize the Kriging surrogate model and finite element simulation is performed to validate the effectiveness of the proposed method. © 2024 IEEE.

关键词： Sensitivity analysis

来源：评论

学校读者我要写书评

暂无评论

Experimental Investigation on electromagnetic Vibration Characteristics of Induction Motor Fed by Inverter 7

Experimental Investigation on Electromagnetic Vibration Char...

引用

7th IEEE Student Conference on Electric Machines and Systems, SCEMS 2024

作者： Xiao, Yu Liu, Longhui Wang, Jin Zhang, Xianzhuo Zhou, Libing Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan China

ISBN: (纸本)9798350366945

In this paper, an induction motor with the slot combination of 30/22 is taken as an example to study the vibration characteristics under different carrier frequencies, loads and speeds. First, an analytical model of electromagnetic force waves considering the harmonic current of the inverter is established to analyze the source of electromagnetic force waves. Then, a comparative analysis of the current, flux density, and vibration spectra under sinusoidal and variable frequency power supplies is conducted. Finally, the vibration characteristics of the studied motor under different carrier frequencies, loads and speeds are experimentally analyzed. The results show that as the carrier frequency increases, the vibration is effectively suppressed, but the suppression effect gradually weakens. Compared with the carrier frequency, the load change has little effect on the vibration. During the speed regulation process, although the amplitude of the rotor slot harmonic flux density changes little, the vibration weakens because its frequency gradually moves away from the natural frequency;this shows that optimizing the motor from the aspect of avoiding the main harmonic frequency of the natural frequency can also effectively suppress the vibration. © 2024 IEEE.

关键词： Vibration analysis

来源：评论

学校读者我要写书评

暂无评论

Stabilizing porous micro-sized silicon anodes via construction of tough composite interface networks for high-energy-density lithium-ion batteries

引用

Nano Research 2024年第11期17卷 9737-9745页

作者： Lin Sun Yang Liu Liyan Wang Zhidong Chen Zhong Jin Key Laboratory for Advanced Technology in Envirnmental Protection of Jiangsu Province School of Chemistry and Chemical Engineering Yancheng Institute of Technology Yancheng 224051 China School of Petrochemical Engineering Changzhou University Changzhou 213164 China State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic Chemistry MOE Key Laboratory of High Performance Polymer Materials and Technology Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China

Compared to nanostructured Si/C materials, micro-sized Si/C anodes for lithium-ion batteries (LIBs) have gained significant attention in recent years due to their higher volumetric energy density, reduced side reactions and low costs. However, they suffer from more severe volume expansion effects, making the construction of stable micro-sized Si/C anode materials crucial. In this study, we proposed a simple wet chemistry method to obtain porous micro-sized silicon (μP-Si) from waste AlSi alloys. Then, the μP-Si@carbon nanotubes (CNT)@C composite anode with high tap density was prepared by wrapping with CNT and coated with polyvinylpyrrolidone (PVP)-derived carbon. Electrochemical tests and finite element (FEM) simulations revealed that the introduction of CNTs and PVP-derived carbon synergistically optimize the stability and overall performance of the μP-Si electrode via construction of tough composite interface networks. As an anode material for LIBs, the μP-Si@CNT@C electrode exhibits boosted reversible capacity (∼ 3500 mAh·g^(−1) at 0.2 A·g^(−1)), lifetime and rate performance compared to pure μP-Si. Further full cell assembly and testing also indicates that μP-Si@CNT@C is a highly promising anode, with potential applications in future advanced LIBs. It is expected that this work can provide valuable insights for the development of micro-sized Si-based anode materials for high-energy-density LIBs.

关键词： micro silicon anode carbon coating carbon nanotube lithium-ion battery

来源：评论

学校读者我要写书评

暂无评论

Constant On-Time Modulation and Control for Bidirectional LLC Converter with Flux-Balancing

Constant On-Time Modulation and Control for Bidirectional LL...

引用

2024 Energy Conversion Congress and Expo Europe, ECCE Europe 2024

作者： Li, Yong Bao, Junyang Wang, Fangyong Duan, Shanxu Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Wuhan China

ISBN: (纸本)9798350364446

Due to the advantages of high efficiency and high-power density, a bidirectional LLC converter is suitable for a 48V residential photovoltaic and energy storage system (PV-ESS). A constant on-time (COT) modulation with a switching frequency below the resonant frequency is proposed to achieve naturally bidirectional power transfer, low circulation, soft switching, and flux self-balancing. The principle of the proposed modulation is introduced, and the soft switching characteristic is discussed in detail by mode analysis. Furthermore, the voltage gain characteristic is derived by fundamental harmonic analysis (FHA), and the ability to achieve power control indirectly using only frequency is explained. The power closed-loop control scheme is developed based on the above analysis. In addition, the mechanism of flux bias is introduced, and a simplified model is used to explain the reason why the proposed modulation has excellent anti-DC bias capability. Finally, a 60kHz 400V/52V 2.5kW bidirectional LLC converter is demonstrated. The prototype achieves a peak efficiency of 98.74%, and a power density of 46 W/in3 © 2024 IEEE.

关键词： Switching frequency

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：