Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292735
T. Yin, Yue Wang, Xiaolei Wang, Xuan Li, Ying Xu, Pengkun Li
Oscillationphenomenon has been reported in modular multilevel converter-based high-voltage DC (MMC-HVDC) transmission system. Many methods have been proposed to suppress the oscillation and improve the system stability, however, few papers have analyzed the influence of stabilization control on MMC impedance analytically. Impedance model of MMC considering additional stabilization control is derived in this paper. Based on this impedance model, the influence of stabilization control on MMC impedance are studied, and an optimal design method for controller parameters of the stabilization strategy is proposed to maximize the phase margin of the MMC-HVDC system. Furthermore, this paper points out that stabilization method based on oscillating voltage feedback is more effective than stabilization method based on oscillating current feedback, and the reason is analyzed. Finally, the above results are verified by simulation.
{"title":"Impedance-Based Modeling and Analysis of Stabilization Control for MMC-HVDC","authors":"T. Yin, Yue Wang, Xiaolei Wang, Xuan Li, Ying Xu, Pengkun Li","doi":"10.1109/HVDC50696.2020.9292735","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292735","url":null,"abstract":"Oscillationphenomenon has been reported in modular multilevel converter-based high-voltage DC (MMC-HVDC) transmission system. Many methods have been proposed to suppress the oscillation and improve the system stability, however, few papers have analyzed the influence of stabilization control on MMC impedance analytically. Impedance model of MMC considering additional stabilization control is derived in this paper. Based on this impedance model, the influence of stabilization control on MMC impedance are studied, and an optimal design method for controller parameters of the stabilization strategy is proposed to maximize the phase margin of the MMC-HVDC system. Furthermore, this paper points out that stabilization method based on oscillating voltage feedback is more effective than stabilization method based on oscillating current feedback, and the reason is analyzed. Finally, the above results are verified by simulation.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130519421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292712
Xiying Zhang, Guohong Cao, Wenbin Zeng
With the development of VSC-HVDC technology, the performance and application technology of bypass thyristors are constantly updated and improved. This paper studies a power electronic device that can effectively protect the VSC-HVDC system-sacrificial bypass thyristor, analyzes application methods and test results of gate current injection sacrificial thyristor and voltage breakdown sacrificial thyristor in the VSC-HVDC system. Through research, it is pointed out that the gate current injection sacrificial thyristor needs to add energy storage power source and requires a certain time for heat accumulation, which is currently less practical. The voltage breakdown sacrificial thyristor not only has the functions of forward conduction and reverse blocking, but also has the characteristics of reverse precise breakdown and great rupture resilience. The voltage breakdown sacrificial thyristor can realize comprehensive protection of MMC submodules, which has already been implemented in Rudong Project, and the prospect of subsequent application promotion is broad.
{"title":"Research on Application Technology of Sacrificial Bypass Thyristor Suitable for VSC-HVDC System","authors":"Xiying Zhang, Guohong Cao, Wenbin Zeng","doi":"10.1109/HVDC50696.2020.9292712","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292712","url":null,"abstract":"With the development of VSC-HVDC technology, the performance and application technology of bypass thyristors are constantly updated and improved. This paper studies a power electronic device that can effectively protect the VSC-HVDC system-sacrificial bypass thyristor, analyzes application methods and test results of gate current injection sacrificial thyristor and voltage breakdown sacrificial thyristor in the VSC-HVDC system. Through research, it is pointed out that the gate current injection sacrificial thyristor needs to add energy storage power source and requires a certain time for heat accumulation, which is currently less practical. The voltage breakdown sacrificial thyristor not only has the functions of forward conduction and reverse blocking, but also has the characteristics of reverse precise breakdown and great rupture resilience. The voltage breakdown sacrificial thyristor can realize comprehensive protection of MMC submodules, which has already been implemented in Rudong Project, and the prospect of subsequent application promotion is broad.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123614262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292771
Tian Kaizhe, L. Zhendong, An Haiqing, Jin Haiwang, Zhao Dong, Li Jinbo
In view of the characteristics of the four-end loop network in the Zhangbei flexible DC project and the requirement that the fault of the MMC flexible DC grid needs to be cleared quickly, the protection strategy and fault isolation technology of the four-end loop network were studied. In this paper, the fault of DC circuit breaker was analyzed and compared. The fault can be quickly removed by combining DC circuit breaker with coordination control. The protection scheme of flexible DC network based on DC circuit breaker failure is proposed, and the model is built on MATLAB for simulation and verification. The simulation results show that the proposed fault protection scheme can break the adjacent DC circuit breaker correctly when the DC circuit breaker fails, so as to achieve the purpose of protecting the stable operation of the system. Among them, the main branch and transfer branch current tolerance of the fault DC circuit breaker and the normal opening and breaking DC circuit breaker meet the technical design requirements.
{"title":"Coordinated Protection Strategy of DC Circuit Breakers Under N-3 Fault of Flexible DC Grid","authors":"Tian Kaizhe, L. Zhendong, An Haiqing, Jin Haiwang, Zhao Dong, Li Jinbo","doi":"10.1109/HVDC50696.2020.9292771","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292771","url":null,"abstract":"In view of the characteristics of the four-end loop network in the Zhangbei flexible DC project and the requirement that the fault of the MMC flexible DC grid needs to be cleared quickly, the protection strategy and fault isolation technology of the four-end loop network were studied. In this paper, the fault of DC circuit breaker was analyzed and compared. The fault can be quickly removed by combining DC circuit breaker with coordination control. The protection scheme of flexible DC network based on DC circuit breaker failure is proposed, and the model is built on MATLAB for simulation and verification. The simulation results show that the proposed fault protection scheme can break the adjacent DC circuit breaker correctly when the DC circuit breaker fails, so as to achieve the purpose of protecting the stable operation of the system. Among them, the main branch and transfer branch current tolerance of the fault DC circuit breaker and the normal opening and breaking DC circuit breaker meet the technical design requirements.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116215168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292834
Ming Yan, Zheren Zhang, Zheng Xu
Research on control strategy of multi-terminal transmission systems has become the focus of recent power system development. After summarizing various system-level DC voltage control strategies, this paper proposes a new DC voltage control strategy named the distributed DC voltage control strategy. The DC voltage of the multi-terminal transmission systems can be controlled by more than one converter station in the new strategy. Also, it can indirectly control the active power by changing the DC current distribution coefficient of the converter station. To further explain the proposed strategy, the overall control structure, steady-state control and fault control are discussed. Two typical fault simulations on PSCAD/EMTDC are carried out to compare the dynamic characteristics among the master-slave control, the dead-band voltage droop control and the distributed DC voltage control. The result shows that the proposed control strategy has smaller DC overvoltage level, smaller DC current fluctuation and less transient process time during typical faults, and the dynamic response characteristics are better.
{"title":"A New DC Voltage Control Strategy for Multiterminal Transmission Systems","authors":"Ming Yan, Zheren Zhang, Zheng Xu","doi":"10.1109/HVDC50696.2020.9292834","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292834","url":null,"abstract":"Research on control strategy of multi-terminal transmission systems has become the focus of recent power system development. After summarizing various system-level DC voltage control strategies, this paper proposes a new DC voltage control strategy named the distributed DC voltage control strategy. The DC voltage of the multi-terminal transmission systems can be controlled by more than one converter station in the new strategy. Also, it can indirectly control the active power by changing the DC current distribution coefficient of the converter station. To further explain the proposed strategy, the overall control structure, steady-state control and fault control are discussed. Two typical fault simulations on PSCAD/EMTDC are carried out to compare the dynamic characteristics among the master-slave control, the dead-band voltage droop control and the distributed DC voltage control. The result shows that the proposed control strategy has smaller DC overvoltage level, smaller DC current fluctuation and less transient process time during typical faults, and the dynamic response characteristics are better.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116289822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292770
Qingren Jin, Z. Yao, Min Guo
Due to wide variation of grid impedance and the interactions among the parallel gird-connected inverters, resonance phenomena and stability problems are inevitable. To address the problem, this paper proposes an improved resonance detection method applied to active dampers to improve the stability of parallel grid-connected inverters. Compared with resistive active power filters, the active damper enjoys the benefit of wide frequency range suppression of the specific harmonic and resonance with higher switching frequency and lower power rating. Further, the accuracy of resonant frequency to be compensated is guaranteed by the proposed modified resonance detection method which could estimate the system resonance frequency accurately and is applied to active dampers to suppress the interharmonics and subharmonics effectively. Finally, the simulation results verify the effectiveness and feasibility of the modified detection method.
{"title":"Stability Improvement for Multi-inverter System Based on Active Damper with Modified Resonance Detection Method","authors":"Qingren Jin, Z. Yao, Min Guo","doi":"10.1109/HVDC50696.2020.9292770","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292770","url":null,"abstract":"Due to wide variation of grid impedance and the interactions among the parallel gird-connected inverters, resonance phenomena and stability problems are inevitable. To address the problem, this paper proposes an improved resonance detection method applied to active dampers to improve the stability of parallel grid-connected inverters. Compared with resistive active power filters, the active damper enjoys the benefit of wide frequency range suppression of the specific harmonic and resonance with higher switching frequency and lower power rating. Further, the accuracy of resonant frequency to be compensated is guaranteed by the proposed modified resonance detection method which could estimate the system resonance frequency accurately and is applied to active dampers to suppress the interharmonics and subharmonics effectively. Finally, the simulation results verify the effectiveness and feasibility of the modified detection method.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121643611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292901
P. Sun, Yuxionz Huang, Jiakun An, Zehui Yan, W. Guo, Gengfeng Li
The optimization issues of integrated energy systems (IESs) have gained increasing attention in recently years. In this article, a planning configuration method of IESs is proposed, in which the influence at the operation level is considered. Specifically, a model of IESs equipping well applicability is established firstly to depict the construction and the operation modes of the IES and its components. On this basis, an optimization planning model of IESs considering the optimal operation is then put forward aiming at minimizing comprehensive costs, which consists of investment costs and operation costs. In the optimization model, to reducing the computational burden, four seasonal typical operation modes are adopted to capture the impacts of different operation scenarios on planning results. Furthermore, the feasibility of the proposed method is validated by extensive case studies.
{"title":"Single-Stage Planning Configuration of Integrated Energy Systems Considering Optimal Operation","authors":"P. Sun, Yuxionz Huang, Jiakun An, Zehui Yan, W. Guo, Gengfeng Li","doi":"10.1109/HVDC50696.2020.9292901","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292901","url":null,"abstract":"The optimization issues of integrated energy systems (IESs) have gained increasing attention in recently years. In this article, a planning configuration method of IESs is proposed, in which the influence at the operation level is considered. Specifically, a model of IESs equipping well applicability is established firstly to depict the construction and the operation modes of the IES and its components. On this basis, an optimization planning model of IESs considering the optimal operation is then put forward aiming at minimizing comprehensive costs, which consists of investment costs and operation costs. In the optimization model, to reducing the computational burden, four seasonal typical operation modes are adopted to capture the impacts of different operation scenarios on planning results. Furthermore, the feasibility of the proposed method is validated by extensive case studies.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121709843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292755
Mingjia Zhou, Zhiwen Zhang, Junjie Ma, Yong Li, L. Tan
In this paper, we present a multi-object optimization model to obtain the optimal ultra-high voltage direct current UHVDC access position. With consideration of the safety and stability of the power system, and the economy, the power flow distribution, the effective short-circuit ratio, the static voltage stability and the active power loss in different areas are respectively yield indexes. Weighted by the coefficient-of-variation method, these indexes are aggregated to build the objective function. The presented optimization model is applied in Hunan power grid solve its UHVDC planning problem. By solving the optimization problem, optimal UHVDC access positions are given, while the safety and stability are met the requirement, the active power loss is decreased, and the power shortage of the access area can be cut back in future years.
{"title":"Coefficient-of-Variation Based Optimal UHVDC Access Position Selection for Hunan Power Grid","authors":"Mingjia Zhou, Zhiwen Zhang, Junjie Ma, Yong Li, L. Tan","doi":"10.1109/HVDC50696.2020.9292755","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292755","url":null,"abstract":"In this paper, we present a multi-object optimization model to obtain the optimal ultra-high voltage direct current UHVDC access position. With consideration of the safety and stability of the power system, and the economy, the power flow distribution, the effective short-circuit ratio, the static voltage stability and the active power loss in different areas are respectively yield indexes. Weighted by the coefficient-of-variation method, these indexes are aggregated to build the objective function. The presented optimization model is applied in Hunan power grid solve its UHVDC planning problem. By solving the optimization problem, optimal UHVDC access positions are given, while the safety and stability are met the requirement, the active power loss is decreased, and the power shortage of the access area can be cut back in future years.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114695077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Based on the primary side with LCC compensation and the secondary side with a series capacitor and a parallel capacitor, the mathematical model of LCC-SP compensation topology for wireless power transfer (WPT) system is established. The impedance condition and the constant current output characteristic of the newly proposed topology are studied, followed by a detailed derivation of compensation parameters based on the discussion about resonant tank. The realization of zero voltage switching (ZVS) and reactive power demand are discussed by theoretical deduction and numerical simulation. Theoretical analysis shows that the appropriate detuned resonant tank is advantageous in performance, especially the smoothing of current output to variation of coupling coefficient. Theoretical analysis indicates that the proposed system has four attractive characteristics: constant current output, easy achievement of ZVS, higher design freedom, high misalignment tolerance. Finally, the WPT prototype with the LCC-SP compensation network is built and tested. The experimental results match well with the calculations, validating the correctness of theoretical analysis.
{"title":"Design of an LCC-SP Compensated WPT System and Parameters Tuning Method for Misalignment Condition","authors":"Junfeng Yang, Chaoqun Jiao, Xiaodong Zhang, Xu Yang, Kaijian Zhang","doi":"10.1109/HVDC50696.2020.9292889","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292889","url":null,"abstract":"Based on the primary side with LCC compensation and the secondary side with a series capacitor and a parallel capacitor, the mathematical model of LCC-SP compensation topology for wireless power transfer (WPT) system is established. The impedance condition and the constant current output characteristic of the newly proposed topology are studied, followed by a detailed derivation of compensation parameters based on the discussion about resonant tank. The realization of zero voltage switching (ZVS) and reactive power demand are discussed by theoretical deduction and numerical simulation. Theoretical analysis shows that the appropriate detuned resonant tank is advantageous in performance, especially the smoothing of current output to variation of coupling coefficient. Theoretical analysis indicates that the proposed system has four attractive characteristics: constant current output, easy achievement of ZVS, higher design freedom, high misalignment tolerance. Finally, the WPT prototype with the LCC-SP compensation network is built and tested. The experimental results match well with the calculations, validating the correctness of theoretical analysis.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126342418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292713
Yan Xiong, Zhipeng He, Weihua Zhong, Yuebin Zhou, Zhe Zhu, Shukai Xu, Xianghua Zhao, Liu Yang
This VSC-HVDC (Voltage Sourced Converter) has been widely applied all over the world owing to its unique advantages. Converter valve is the key equipment of VSCs, its losses are significant to the economically operation of VSC stations. Analysis and accurate measurement of the losses can make great contribution to efficiency optimization, devices selection and thermal design, etc. The paper investigated the losses measurement technology of power electronics equipment and surveyed the academic research at home and abroad of the double pulse method, electric method and thermal method for losses measurement. It came up with three test schemes for measuring losses of VSC sub-modules respectively, the schemes include measuring method, test circuit design, equipment selection, software platform and its control method, test procedure, uncertainty and loss estimation method. In the physical test platform, tests based on three schemes are carried out, the uncertainty of tests results is analyzed. This paper provides reference for measuring losses of VSC sub-modules in practical projects.
{"title":"Tests Estimate And Analysis on Losses of VSC Sub-modules","authors":"Yan Xiong, Zhipeng He, Weihua Zhong, Yuebin Zhou, Zhe Zhu, Shukai Xu, Xianghua Zhao, Liu Yang","doi":"10.1109/HVDC50696.2020.9292713","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292713","url":null,"abstract":"This VSC-HVDC (Voltage Sourced Converter) has been widely applied all over the world owing to its unique advantages. Converter valve is the key equipment of VSCs, its losses are significant to the economically operation of VSC stations. Analysis and accurate measurement of the losses can make great contribution to efficiency optimization, devices selection and thermal design, etc. The paper investigated the losses measurement technology of power electronics equipment and surveyed the academic research at home and abroad of the double pulse method, electric method and thermal method for losses measurement. It came up with three test schemes for measuring losses of VSC sub-modules respectively, the schemes include measuring method, test circuit design, equipment selection, software platform and its control method, test procedure, uncertainty and loss estimation method. In the physical test platform, tests based on three schemes are carried out, the uncertainty of tests results is analyzed. This paper provides reference for measuring losses of VSC sub-modules in practical projects.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"39 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126071398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-06DOI: 10.1109/HVDC50696.2020.9292719
Ziqing Guo, Qing Xiong, Bohang Liang, Jinfei Zhao, Chen Zhang, Lingyu Zhu, S. Ji
Battery safety is one of the most crucial issues in the utilization of Lithium ion batteries (LIBs). Short circuit, overcharge, and overheat are three common field failures of LIBs and overcharge is the most important common failure. To accurately detect the overcharge of LIBs, the experiments are carried out to obtain the vibration signals of LIBs under different state of charge (SOC) including overcharge. The spectrum of the vibration signals is analyzed using fast Fourier transform (FFT). The results show that the magnitude and the amplitude range of the vibration signals generated by the LIB will increase if the LIB continues to be charged when overcharged. In addition, a high frequency vibration signal which is about 9.5 kHz will occur when the LIB is overcharged, which could be used as an indicator to detect the battery overcharge.
{"title":"Overcharge Detection of Lithium-ion Battery Based on Vibration Signal","authors":"Ziqing Guo, Qing Xiong, Bohang Liang, Jinfei Zhao, Chen Zhang, Lingyu Zhu, S. Ji","doi":"10.1109/HVDC50696.2020.9292719","DOIUrl":"https://doi.org/10.1109/HVDC50696.2020.9292719","url":null,"abstract":"Battery safety is one of the most crucial issues in the utilization of Lithium ion batteries (LIBs). Short circuit, overcharge, and overheat are three common field failures of LIBs and overcharge is the most important common failure. To accurately detect the overcharge of LIBs, the experiments are carried out to obtain the vibration signals of LIBs under different state of charge (SOC) including overcharge. The spectrum of the vibration signals is analyzed using fast Fourier transform (FFT). The results show that the magnitude and the amplitude range of the vibration signals generated by the LIB will increase if the LIB continues to be charged when overcharged. In addition, a high frequency vibration signal which is about 9.5 kHz will occur when the LIB is overcharged, which could be used as an indicator to detect the battery overcharge.","PeriodicalId":298807,"journal":{"name":"2020 4th International Conference on HVDC (HVDC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115906628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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