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A method for battery health estimation under variable operating conditions based on the fusion of simplified electrochemical model and alpha evolution-back propagation model

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Journal of Energy Storage 2025年 123卷

作者： Shan, Runzhe Wang, Yaxuan Wang, Chao Cui, Yue Guo, Shilong Jiang, Yunfeng Wang, Qiwei Zhao, Lei Rong, Changru Li, Junfu Wang, Zhenbo State Key Laboratory of Space Power-Sources MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage MOE Engineering Research Center for Electrochemical Energy Storage and Carbon Neutrality in Cold Regions School of Chemistry and Chemical Engineering Harbin Institute of Technology Heilongjiang Harbin150001 China School of Automotive Engineering Harbin Institute of Technology at Weihai Shandong Weihai264209 China National Key Laboratory of Advanced Vehicle Integration and Control China FAW Grp Co Ltd Jilin Changchun130013 China

In recent years, research on the state of health (SOH) estimation of lithium-ion batteries under variable operating conditions receives widespread attention. Data-driven methods for SOH estimation of lithium-ion batteries often lack interpretability and reliability. This study proposes a novel model-data hybrid-driven approach that combines a simplified electrochemical model with an α-evolution-back propagation model to accurately predict SOH under variable operating conditions. The exponential-trigonometric optimization algorithm is applied for the first time to effectively identify parameters of the simplified electrochemical model, extracting more reliable and interpretable features throughout the full lifecycle of lithium-ion batteries. The alpha evolution algorithm is employed to optimize the initial parameters of the back propagation neural network, using features based on model parameters identified under variable operating conditions as inputs to the alpha evolution-back propagation model for SOH estimation. The proposed method is validated on three self-constructed datasets under variable operating conditions. The results show that the prediction accuracy exceeds 99.5 %, with the highest accuracy approaching 99.9 %. The training and testing dataset partitioning criteria used in this study hold significant practical relevance, aligning well with the requirements of using historical data to predict SOH degradation of retired lithium-ion batteries under predefined scenarios for their cascade utilization. This method provides valuable insights for enhancing the safety of cascade utilization of retired batteries. © 2025 Elsevier Ltd

关键词： Lithium-ion batteries

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Investigation on wind energy-compressed air power system

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2004年第3期5卷 41-46页

作者：贾光政王宣银吴根茂 State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

Wind energy is a pollution free and renewable resource widely distributed over China. Aimed at protecting the environment and enlarging application of wind energy, a new approach to application of wind energy by using compressed air power to some extent instead of electricity put forward. This includes: explaining the working principles and charac-teristics of the wind energy-compressed air power system; discussing the compatibility of wind energy and compressor capacity; presenting the theoretical model and computational simulation of the system. The obtained compressor capacity vs wind power relationship in certain wind velocity range can be helpful in the designing of the wind power-compressed air system. Results of investigations on the application of high-pressure compressed air for pressure reduction led to conclusion that pressure reduction with expander is better than the throttle regulator in energy saving.

关键词： Wind energy Compressed air power Pressure reduction Clean energy

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Thyristor-inserted MMC Sub-module Topology with DC Fault Blocking Capability

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CSEE Journal of power and Energy Systems 2024年第5期10卷 2221-2229页

作者： Cheng Peng Rui Li Xu Cai Key Laboratory of Control of Power Transmission and Conversion Shanghai Jiao Tong UniversityMinistry of EducationShanghai Jiao Tong UniversityShanghai 200240China.

Modular multilevel converter(MMC)is increasingly being applied to high voltage direct current(HVDC)***,dc short circuit situations restrain the application of a conventional half bridge MMC *** this paper,a new sub-module topology with inserted thyristor can help the MMC system clear a dc side *** states and devices voltage stress of the proposed topology are analyzed and the conduction loss comparison between the proposed topology with several existing topologies with dc fault blocking capability is carried *** show the proposed topology is superior to other topologies in terms of conduction loss while using the same voltage rating ***,compared with traditional half bridge topology,only thyristors and diodes are added in the proposed ***,cost of the proposed topology can be lower than conventional hybrid MMC *** last,the fault blocking capability of the proposed topology is verified in the simulation.

关键词： Fault current limiting high voltage direct current(HVDC)transmission modular multilevel converter(MMC)

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Synchronous tracking control of 6-DOF hydraulic parallel manipulator using cascade control method

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Journal of Central South University 2011年第5期18卷 1554-1562页

作者：皮阳军王宣银顾曦 State Key Laboratory of Fluid Power Transmission and Control Zhejiang University State Key Laboratory of Mechanical Transmission Chongqing University

The synchronous tracking control problem of a hydraulic parallel manipulator with six degrees of freedom (DOF) is complicated since the inclusion of hydraulic elements increases the order of the *** solve this problem,cascade control method with an inner/outer-loop control structure is used,which masks the hydraulic dynamics with the inner-loop so that the designed controller takes into account of both the mechanical dynamics and the hydraulic dynamics of the ***,a cross-coupling control approach is introduced to the synchronous tracking control of the *** position synchronization error is developed by considering motion synchronization between each actuator joint and its adjacent ones based on the synchronous ***,with the feedback of both position error and synchronization error,the tracking is proven to guarantee that both the position errors and synchronization errors asymptotically converge to ***,the effectiveness of the proposed approach is verified by the experimental results performed with a 6-DOF hydraulic parallel manipulator.

关键词： synchronization error cross-coupling cascade control hydraulic dynamics parallel manipulator degree of freedom

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IEEE 1588 based time synchronization system for a seafloor observatory network

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第10期14卷 766-776页

作者： De-jun LI Gang WANG Can-jun YANG Bo JIN Yan-hu CHEN State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

An IEEE 1588 based application scheme was proposed to achieve accurate time synchronization for a deep seafloor observatory network based on the communication topological structure of the Zhejiang University Experimental and Research *** principles of the network time protocol(NTP)and precision time protocol(PTP)were *** framework for time synchronization of the shore station,undersea junction box layer,and submarine science instrument layer was *** and PTP network signals were decoded by a PTP master clock on a shore station that receives signals from the Global Positioning System and the BeiDou Navigation Satellite System as reference time *** signals were remotely transmitted by a subsea optical–electrical composite cable through an Ethernet passive optical *** time was determined by time synchronization devices in each *** monitoring experiments performed within a laboratory environment indicated that the proposed system is valid and has the potential to realize microsecond accuracy to satisfy the time synchronization requirements of a high-precision seafloor observatory network.

关键词： Seafloor observatory network Junction box IEEE 1588 Time synchronization

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Novel Optimal Dispatch Method for Multiple Energy Sources in Regional Integrated Energy Systems Considering Wind Curtailment

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CSEE Journal of power and Energy Systems 2024年第5期10卷 2166-2173页

作者： Yang Gao Qian Ai Key Laboratory of Control of Power Transmission and Conversion Ministry of EducationShanghai Jiao Tong UniversityShanghai 200240China

power-to-gas technology uses temporary surplus electricity to create either renewable hydrogen or renewable natural gas,which can then be stored in natural-gas pipelines and used when *** a result,P2G transforms conventional one-way coupling of a power/heat/natural-gas system into twoway ***,its operating characteristics makes it possible to more effectively utilize *** paper describes a new optimal dispatch model for integrated electricity/gas/heat energy *** model considers the effective use of surplus wind-energy with electricity-to-gas ***,a multi-energy network model is built,taking into account both equipment and network ***,we apply a novel two-layer optimization method,which uses P2G,to“absorb”wind *** the top-layer model is used for the dayahead dispatch of the natural-gas network containing P2G,the bottom-layer model describes the day-ahead economic dispatch of the electricity/heat system,which includes wind *** on the Karush-Kuhn-Tucher conditions of the bottom-layer model,the two-layer model is transformed into a single-layer model,and we linearize the nonlinear equation to convert the nonlinear model into a mix-integer linear programming problem,which is solvable using the General Algebraic Modeling ***,numerical case-studies are performed to evaluate the accuracy and effectiveness of the proposed method.

关键词： Multi-enery coupling power-to-gas two-layer optimization wind-power consumption

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Design of Low-power Data Logger of Deep Sea for Long-Term Field Observation

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China Ocean Engineering 2009年第1期23卷 133-144页

作者：赵伟陈鹰杨灿军曹建伟顾临怡 The State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

This paper describes the implementation of a data logger for the real-time in-situ monitoring of hydrothermal systems. A compact mechanical structure ensures the security and reliability of data logger when used under deep sea. The data logger is a battery powered instrument, which can connect chemical sensors （pH electrode, H2S electrode, H2 electrode） and temperature sensors. In order to achieve major energy savings, dynamic power management is implemented in hardware design and software design. The working current of the data logger in idle mode and active mode is 15 μA and 1.44 mA respectively, which greatly extends the working time of battery. The data logger has been successftdly tested in the first Sino-American Cooperative Deep Submergence Project from August 13 to September 3, 2005.

关键词： data logger low-power design deep sea long-term monitoring

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A -Source Circuit Breaker for DC Microgrid Protection

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IEEE Transactions on Industrial Electronics 2021年第3期68卷 2310-2320页

作者： Zhou, Zhongzheng Jiang, Jianguo Ye, Shu Liu, Cong Zhang, Dan Key Laboratory of Control of Power Transmission and Conversion Shanghai Jiao Tong University Ministry of Education Shanghai200030 China

In this article, a novel -source circuit breaker (CB) that can offer automatic fault isolation with no reflected fault current in the feeding source is proposed for the protection of dc microgrids. Compared with conventional Z-source CBs, this topology utilizes fewer elements through the magnetic coupling, thus allowing a considerably reduced volume and weight. To accurately quantify the breaker elements, detailed modeling over both short-circuit and overload faults is carried out. The derived equations are significantly valuable for guiding the implementation of the novel breaker. A soft-starting circuit is also introduced to limit the capacitor charging current when reenergizing the breaker. In addition, a bidirectional -source CB extended from the unidirectional topology with the same impedance network is discussed. If required, a crowbar-type switch, which allows the breaker to be manually tripped, can be conveniently integrated into the -source CB. This manual tripping switch is useful for clearing steady-state overload faults. Moreover, experimental waveforms of fault-clearing and manual tripping operations are included to validate the effectiveness of the novel CB. © 1982-2012 IEEE.

关键词： Electric circuit breakers

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Regional Integrated Energy System Resilience Enhancement Strategy at the Integrated Stage of Disaster Response and Post-Disaster Recovery

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Journal of Shanghai Jiaotong University (Science) 2024年 1-13页

作者： You, Minghao Gu, Jie Liu, Shuqi Key Laboratory of Control of Power Transmission and Conversion of Ministry of Education Shanghai Jiao Tong University Shanghai200240 China

Deployment of integrated energy system is conducive to improving energy efficiency and achieving the transformation of the global energy system. However, recent appearance of extreme natural disasters poses a great challenge to the safe and stable operation of the integrated energy system. Therefore, the resilience of the integrated energy system, namely the ability to anticipate, withstand, respond to and recover to normal state, is to be enhanced urgently. This paper proposes a master-slave optimization model for the resilience enhancement of integrated energy system in the integrated stage of disaster response and post-disaster recovery, in view of the strong correlation between the two stages. The master model develops the optimal fault repair plan, and the sub model determines the optimal energy supply recovery scheme. Based on the master-slave model, which adopts the repair and operation state of the component as coupling variables, a coordinated optimization framework is constructed. Then, the master-slave model is merged into a two-stage robust optimization model for iterative solution in order to develop the optimal fault repair strategy and energy supply recovery scheme of the integrated energy system, enhancing its resilience in the integrated stage of disaster response and post-disaster recovery. © Shanghai Jiao Tong University 2024.

关键词： Optimization

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Particle removal by a single cavitation bubble

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Science China(Physics,Mechanics & Astronomy) 2014年第4期57卷 668-673页

作者： XU Ming JI Chen ZOU Jun RUAN XiaoDong FU Xin State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

In the paper,the behavior of the particle acted by the oscillating bubble is studied using a high-speed video *** bubble is generated using a very low voltage of 55 *** are captured at a speed of 15000 fps(frames per second).It is found that the velocity of the particle is dependent on the liquid viscosity,particle size,and tube *** velocity decreases with the increase of the glycron-water mixture viscosity.A model is presented to predict the velocity and verified by experimental *** observations may be beneficial for the application in medical treatment.

关键词： oscillating bubble particle removal viscosity influence

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