检索结果-内蒙古大学图书馆

Two-stage Optimal Scheduling of Community Integrated Energy system Considering Operation Sequences of Hydrogen Energy Storage systems

引用

Journal of Modern Power systems and Clean Energy 2025年第1期13卷 276-288页

作者： Wei Kong Kai Sun Jinghong Zhao School of Electrical Engineering Naval University of EngineeringWuhanChina Department of Electrical Engineering State Key Laboratory of Power System Operation and ControlTsinghua UniversityBeijingChina

The hydrogen energy storage system(HESS)integrated with renewable energy power generation exhibits low reliability and flexibility under source-load *** address the above issues,a two-stage optimal scheduling model considering the operation sequences of HESSs is proposed for commercial community integrated energy systems(CIESs)with power to hydrogen and heat(P2HH)*** aims to optimize the energy flow of HESS and improve the flexibility of hydrogen production and the reliability of energy supply for ***,the refined operation model of HESS is established,and its operation model is linearized according to the operation domain of HESS,which simplifies the difficulty in solving the optimization problem under the premise of maintaining high approximate ***,considering the flexible start-stop of alkaline electrolyzer(AEL)and the avoidance of multiple energy conversions,the operation sequences of HESS are ***,a two-stage optimal scheduling model combining day-ahead economic optimization and intra-day rolling optimization is established,and the model is simulated and verified using the source-load prediction data of typical days in each *** simulation results show that the two-stage optimal scheduling reduces the total load offset by about 14%while maintaining similar operating cost to the day-ahead economic optimal ***,by formulating the operation sequences of HESS,the operating cost of CIES is reduced by up to about 4.4%.

关键词： Community integrated energy system(CIES) hydrogen storage operation sequence two-stage optimal scheduling

来源：评论

学校读者我要写书评

暂无评论

Photovoltaic Multi-Peak MPPT Method with Improved Particle Swarm Algorithm 9

Photovoltaic Multi-Peak MPPT Method with Improved Particle S...

引用

9th Asia Conference on Power and Electrical Engineering, ACPEE 2024

作者： Ma, Zun Meng, Xian Xing, Chao Hu, Binjiang Zhu, Yihua Tu, Liang System Analysis and DC Technology Research Institute Electric Power Research Institute of Yunnan Power Grid Co. Ltd Kunming China State Key Laboratory of HVDC EPRI CSG Power System Simulation and Control Technology Department Guangzhou China National Energy Power Grid Technology R&D Centre Power System Simulation and Control Technology Department Guangzhou China CSG Key Laboratory for Power System Simulation Power System Simulation and Control Technology Department Guangzhou China

ISBN: (纸本)9798350309638

An MPPT control strategy based on the combination of adaptive nonlinear mutation particle swarm optimization algorithm is proposed. The algorithm uses the tanh function to control the inertia weight, balances the ability of particles to optimize globally and locally, uses the ISRU function to control the learning factor, balances the weight relationship between individual learning and social learning, and improves the convergence speed of the algorithm. The nonlinear Cauchy mutation operation is proposed to expand the scope of optimization;Finally, the perturbation and observation method is used to track locally near the maximum power point to reduce power oscillation. The simulation validates that the photovoltaic MPPT control strategy based on the improved particle swarm algorithm can effectively get the maximum power point under shading conditions and improve the output efficiency of the PV array. © 2024 IEEE.

关键词： Maximum power point trackers

来源：评论

学校读者我要写书评

暂无评论

Modeling and Parameter Sensitivity Analysis of Inductor Used Multi-material Powder Core

Modeling and Parameter Sensitivity Analysis of Inductor Used...

引用

International Conference on Wireless Power Transfer, ICWPT 2022

作者： Zhang, Yun Zheng, Zedong Li, Chi Zhou, Qing State Key Laboratory of Control and Simulation of Power System and Generation Equipment Tsinghua University Beijing100084 China

ISBN: (纸本)9789819906307

This paper proposes a novel inductor which combines multiple powder cores with different material properties, which can achieve optimization of multiple performance parameters. For inductor which combines multiple powder cores with different material properties and flat copper wire, the model of DC superimposition inductance, the model of core loss, the model of winding loss and the model of thermal resistor network are derived respectively. These models apply to all different kinds of powder cores, core sizes, wire sizes and winding arrangements. According to the above models, the impact of design parameters on performance parameters is analyzed, in which the design parameters include powder core material, core size, air gap, wire size and number of turns while the performance parameters include volume, power loss and temperature rise of the inductor. The analysis can provide theoretical basis for design and optimization of inductor. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Inductance

来源：评论

学校读者我要写书评

暂无评论

Fatigue and impact analysis and multi-objective optimization design of Mg/Al assembled wheel considering riveting residual stress

引用

Frontiers of Mechanical Engineering 2022年第3期17卷 281-301页

作者： Wenchao XU Dengfeng WANG State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun130022China

The multi-material assembled light alloy wheel presents an effective lightweight solution for new energy vehicles,but its riveting connection remains a *** address this problem,this paper proposed the explicit riveting-implicit springback-implicit fatigue/explicit impact sequence coupling simulation analysis method,analyzed the fatigue and impact performance of the punching riveting connected magnesium/aluminum alloy(Mg/Al)assembled wheel,and constructed some major evaluation *** accuracy of the proposed simulation method was verified by conducting physical experiments of single and cross lap *** punching riveting process parameters of the assembled wheel joints were defined as design variables,and the fatigue and impact performance of the assembled wheel was defined as the optimization *** connection-performance integration multi-objective optimization design of the assembled wheel considering riveting residual stress was designed via Taguchi experiment,grey relational analysis,analytic hierarchy process,principal component analysis,and entropy weighting *** optimization results of the three weighting methods were compared,and the optimal combination of design variables was *** fatigue and impact performance of the Mg/Al assembled wheel were effectively improved after optimization.

关键词： magnesium/aluminum assembled wheel riveting residual stress fatigue analysis impact analysis multi-objective optimization

来源：评论

学校读者我要写书评

暂无评论

Adaptative Pressure Estimation and control Architecture for Integrated Electro-Hydraulic Brake system

引用

Chinese Journal of Mechanical Engineering 2025年第1期38卷 353-381页

作者： Zhenhai Gao Yi Yang Guoying Chen Liang Yuan Jianguang Zhou Jie Zhang State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China Chongqing Research institute Jilin UniversityChongqing 404100China China Automotive Innovation Corporation Nanjing 210000China

The current research of master cylinder pressure estimation mainly relies on hydraulic characteristic or vehicle *** they are not independently applicable to any environment and have their own scope of *** addition,about the master cylinder pressure control,there are few studies that can simultaneously balance pressure building accuracy,speed,and prevent pressure overshoot and *** this paper,an adaptative fusion method based on electro-hydraulic characteristic and vehicle mode is proposed to estimate the master cylinder *** fusion strategy is mainly based on the prediction performance of two algorithms under different vehicle speeds,pressures,and ABS *** from this,this article also includes real-time prediction of the friction model based on RLS to improve the accuracy of the electro-hydraulic *** order to simultaneously balance pressure control accuracy,response speed,and prevent overshoot and jitter,this article proposes an adaptative LQR controller for MC pressure control which uses fuzzy-logic controller to adjust the weights of LQR controller based on target pressure and difference compared with actual *** mode-in-loop and hardware-in-loop tests in ramp,step and sinusoidal response,the whole estimation and control system is verified based on real hydraulic system and the performance is satisfactory under these *** research proposes an adaptative pressure estimation and control architecture for integrated electro-hydraulic brake system which could eliminate pressure sensors in typical scenarios and ensure the comprehensive performance of pressure control.

关键词： Brake-by-wire(BBW) MC pressure estimation MC pressure control Integrated electro-hydraulic brake system(IEHB) Adaptative sliding mode observer(ASMO) Adaptative LQR controller

来源：评论

学校读者我要写书评

暂无评论

High Robustness Current Measurement Error Compensation of SPMSM Drives Based on Discrete Fourier Transform 7

High Robustness Current Measurement Error Compensation of SP...

引用

7th IEEE International Electrical and Energy Conference, CIEEC 2024

作者： Long, Jiang Hu, Yunfeng Gong, Xun College of Telecommunications Engineering Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China College of Artificial Intelligence Jilin University State Key Laboratory of Automotive Simulation and Control Changchun China

ISBN: (纸本)9798350359558

Accurate measurement of current feedback is an important prerequisite for high performance permanent magnet synchronous motor (PMSM) drive systems. For the actual control system, due to the thermal drift, aging, nonlinearity and some other factors of the current sensors and the corresponding conditioning circuits, current measurement error will occur and correspondingly will result in torque and speed ripples. To overcome this issue, an online current measurement error compensation (CMEC) method for PMSM drive system is proposed in this paper. Firstly, the influence of different kinds of current measurement errors, the offset error and scaling error, is analyzed from the perspective of open loop control. Secondly, a Discrete Fourier Transform (DFT) based CMEC method is proposed. Finally, the effectiveness of the proposed method is validated on a 1kW commercialized servo motor test rig, results show that the proposed method can reduce 80% of the current ripple. © 2024 IEEE.

关键词： Discrete Fourier transforms

来源：评论

学校读者我要写书评

暂无评论

Electrical tree degradation of MgO/epoxy resin composites at different voltage frequencies

引用

High Voltage 2024年第3期9卷 581-590页

作者： Yunxiao Zhang Wenxin Lin Yuanxiang Zhou Weiwei Xing Jiayu Cheng Chenyuan Teng College of Electrical Engineering and Automation Fuzhou UniversityFujian Key Laboratory of New Energy Generation and Power ConversionFuzhouChina State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Department of Electrical EngineeringTsinghua UniversityBeijingChina

Electrical tree degradation is one of the main causes of insulation failure in high-frequency *** tree degradation is studied on pure epoxy resin(EP)and MgO/EP composites at frequencies ranging from 50 Hz to 130 *** results show that the tree initiation voltage of EP decreases,while the growth rate and the expansion coefficient increase with ***,the bubble phenomenon at high frequencies in EP composites is *** with trap distribution character-istics within the material,the intrinsic mechanism of epoxy composites to inhibit the growth of the electrical tree at different frequencies is *** can be concluded that more deep traps and blocking effect are introduced by doping nano-MgO into EP bulks,which can improve the electrical tree resistance performance of EP composites in a wide frequency range.

关键词： composites tree Electrical

来源：评论

学校读者我要写书评

暂无评论

Integrated Motion control of Interaction Safety, Stability, and Path-Tracking for Front-and-Rear-Independent-Drive Electric Vehicle

引用

IEEE Transactions on Transportation Electrification 2025年第3期11卷 8573-8583页

作者： Zeng, X.H. Duan, C.S. Song, D.F. Qian, Q.F. Yang, D.P. Zhang, X.M. Jilin University State Key Laboratory of Automotive Simulation and Control Changchun130022 China Jiangsu University School of Automotive and Transportation Engineering Zhenjiang212000 China

Under two vehicle interaction scenarios, the uncertain motion states of traffic participants pose significant challenges to the safety of autonomous vehicles (AVs), and AVs are susceptible to instability with emergency avoidance constraints. To address this issue, an integrated motion control of interaction safety, stability, and path-tracking is proposed for front-and-rear-independent-drive electric vehicles (FRIDEV). First, a control-oriented longitudinal-lateral coupled dynamic model is established. Then, a variable step model predictive control (MPC) is designed to solve multiobjective optimization problems, which mainly include two parts: 1) adaptive adjustment of stability weight by an improved phase plane method and 2) adding an interactive safety constraint to motion control by backward reachability analysis. Finally, simulation results show that the proposed controller can effectively utilize the longitudinal and lateral tire forces and achieve a balance between stability and tracking accuracy, and reduce collision risk in the interactive scenario with milder control actions. Moreover, the hardware-in-the-loop (HIL) test demonstrates that the proposed controller is effective in the real-time environment. © 2015 IEEE.

关键词： Predictive control systems

来源：评论

学校读者我要写书评

暂无评论

Effects of surface fluoride modification on TiO_(2)for the photocatalytic oxidation of toluene

引用

Journal of Environmental Sciences 2025年第1期147卷 561-570页

作者： Shaoyu Yuan Min Chen Xiaoxiao Qin Xueyan Chen Jianghao Zhang Changbin Zhang State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

In the present study,we investigated the influence of surface fluorine(F)on TiO_(2)for the photocatalytic oxidation(PCO)of ***_(2)modified with different F content was prepared and *** was found that with the increasing of F content,the toluene conversion rate first increased and then ***,CO_(2)mineralization efficiency showed the opposite *** on the characterizations,we revealed that F substitutes the surface hydroxyl of TiO_(2)to form the structure of≡*** presence of the appropriate amount of surface≡Ti-F on TiO_(2)greatly enhanced the separation of photogenerated carriers,which facilitated the generation of·OH and promoted the activity for the PCO of *** was further revealed that the increase of only·OH promoted the conversion of toluene to ring-containing intermediates,causing the accumulation of intermediates and then conversely inhibited the·OH generation,which led to the decrease of the CO_(2)mineralization *** above results could provide guidance for the rational design of photocatalysts for toluene oxidation.

关键词： Photocatalysis TiO_(2) Toluene Fluorine

来源：评论

学校读者我要写书评

暂无评论

Investigation on the width-to-depth ratio effect on turbulent flows in a sharp meandering channel with periodic boundaries using large eddy simulations

引用

Journal of Hydrodynamics 2024年第4期36卷 662-677页

作者： Bing-chang Zhang Dong Xu Chun-ning Ji Qi-hua Ran Key Laboratory of Hydrologic-Cycle and Hydrodynamic-System of Ministry of Water Resources Hohai UniversityNanjing210098China Oceans Graduate School The University of Western AustraliaPerthAustralia State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin300350China

As one of the most common river patterns in nature,meandering river has very complex flow structures in its curved channel bends,including secondary flow structure and primary flow velocity *** date,most of the studies have been carried out on the flow structures in channel bends with unavoidable influences from inlet and outlet boundaries,while a streamwise periodic boundary can overcome this shortcoming *** this paper,large eddy simulations(LES)are employed to investigate the complex flow structures in periodically continuous sharp sine-generated *** influence of width-to-depth ratios and dimensionless curvature radiuses are *** results highlight two additional vortex structures beyond the commonly known secondary currents:The recirculation zone(RZ)and the inner bank cell(IBC).The width-to-depth ratio shows the determining effect on the recirculation *** size of recirculation zone is usually bigger in sine-generated-curve(SGC)channel with large width-to-depth *** biggest recirculation zones appear between the zero-curvature section and the apex *** inner bank cell only forms in SGC channels with small width-to-depth ratios and low *** SGC channel with large width-to-depth ratios,only one circulation cell is observed near the inner *** spatial variations of turbulent features are also revealed by statistical analysis based on the LES sampling *** highlight remarkable effect of width-to-depth ratio and dimensionless curvature radius on the turbulent kinetic energy(TKE)and bed shear stress in SGC channels.

关键词： Sine-generated bend large width-to-depth ratio Reynolds number large eddy simulation(LES) turbulent structure

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：