Pub Date : 2007-09-01DOI: 10.1109/VPPC.2007.4544147
J. Dailey, K. Abraham, R. Plivelich, J. Landi, M. Klein
Electro Energy, Inc. (EEI) has developed a bipolar battery utilizing a patented wafer cell design, applicable to both NiMH and Li-Ion chemistries. This battery is particularly suitable for meeting the high-voltage, high- energy demands of modern and emerging plug-in hybrid vehicles (PHEVs). EEI's battery technology has the potential to provide a rebuttal to the most common argument for not developing and mass-producing PHEVs, which is that presently available battery technologies do not provide sufficient energy density at a low enough cost and in a small enough package to make such vehicles practical. The EEI battery design is such that conventional current tabs, collectors, and inter- cell connections are eliminated, yielding a battery that is smaller and lighter than a comparable non-wafer battery having an equivalent energy density. In addition, the stacked wafer design has lower internal impedance than conventional batteries, allowing for higher discharge rates and less internal heat build-up. The NiMH version of this battery design has already been successfully demonstrated by EEI in the conversion of a Toyota Prius hybrid electric vehicle (HEV) to a PHEV. A next generation PHEV conversion using a Li-Ion wafer cell battery is presently being implemented. This paper will discuss the advantages of the wafer cell design, past experiences and results obtained with the NiMH PHEV conversion, and future expectations for the Li-Ion PHEV conversion.
electroenergy, Inc. (EEI)利用专利晶圆电池设计开发了一种双极电池，适用于镍氢和锂离子化学。这种电池特别适合满足现代和新兴的插电式混合动力汽车(phev)的高压、高能量需求。EEI的电池技术有可能反驳那些认为不能开发和大规模生产插电式混合动力汽车的最常见的观点，即目前可用的电池技术无法以足够低的成本和足够小的包装提供足够的能量密度，使这种汽车成为现实。EEI电池的设计省去了传统的电流片、集电极和电池间连接，产生的电池比具有同等能量密度的类似非晶圆电池更小、更轻。此外，堆叠晶圆设计具有比传统电池更低的内部阻抗，允许更高的放电速率和更少的内部热量积聚。这种电池设计的镍氢版本已经被EEI成功地用于将丰田普锐斯混合动力汽车(HEV)转换为插电式混合动力汽车。使用锂离子晶圆电池的下一代PHEV转换目前正在实施中。本文将讨论晶片电池设计的优势，镍氢插电式混合动力电池转换的过去经验和结果，以及对锂离子插电式混合动力电池转换的未来期望。
{"title":"Electro Energy Bipolar Wafer Cell Battery Technology for PHEV Applications","authors":"J. Dailey, K. Abraham, R. Plivelich, J. Landi, M. Klein","doi":"10.1109/VPPC.2007.4544147","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544147","url":null,"abstract":"Electro Energy, Inc. (EEI) has developed a bipolar battery utilizing a patented wafer cell design, applicable to both NiMH and Li-Ion chemistries. This battery is particularly suitable for meeting the high-voltage, high- energy demands of modern and emerging plug-in hybrid vehicles (PHEVs). EEI's battery technology has the potential to provide a rebuttal to the most common argument for not developing and mass-producing PHEVs, which is that presently available battery technologies do not provide sufficient energy density at a low enough cost and in a small enough package to make such vehicles practical. The EEI battery design is such that conventional current tabs, collectors, and inter- cell connections are eliminated, yielding a battery that is smaller and lighter than a comparable non-wafer battery having an equivalent energy density. In addition, the stacked wafer design has lower internal impedance than conventional batteries, allowing for higher discharge rates and less internal heat build-up. The NiMH version of this battery design has already been successfully demonstrated by EEI in the conversion of a Toyota Prius hybrid electric vehicle (HEV) to a PHEV. A next generation PHEV conversion using a Li-Ion wafer cell battery is presently being implemented. This paper will discuss the advantages of the wafer cell design, past experiences and results obtained with the NiMH PHEV conversion, and future expectations for the Li-Ion PHEV conversion.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"18 39","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113963224","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544209
G. Martin, R. Moutoux, M. Myat, R. Tan, G. Sanders, F. Barnes
A system designed for use as an integrated starter- alternator unit in an automobile is presented in this paper. The new system utilizes a basic squirrel-cage rotor induction machine with the ability to externally switch the winding configuration for optimal performance. A conventional V/f motor controlling inverter drives the machine in starting mode and rectifies the output of the generator in alternating mode. A system controller manages the inverter and user interface to the system. This system is designed to minimize cost and exhibit good reliability.
{"title":"An Integrated Starter-Alternator System Using Induction Machine Winding Reconfiguration","authors":"G. Martin, R. Moutoux, M. Myat, R. Tan, G. Sanders, F. Barnes","doi":"10.1109/VPPC.2007.4544209","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544209","url":null,"abstract":"A system designed for use as an integrated starter- alternator unit in an automobile is presented in this paper. The new system utilizes a basic squirrel-cage rotor induction machine with the ability to externally switch the winding configuration for optimal performance. A conventional V/f motor controlling inverter drives the machine in starting mode and rectifies the output of the generator in alternating mode. A system controller manages the inverter and user interface to the system. This system is designed to minimize cost and exhibit good reliability.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122289236","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544127
F. Khan, L. Tolbert
A new capacitor clamped modular dc-dc converter with bi-directional power handling capability will be presented in this paper. This inductor-free design is modular, and it is possible to integrate multiple loads and sources simultaneously in the converter. Moreover, this 5 kW dc-dc converter can produce multiple ac outputs to feed power to ac loads or transformers to get further control over the conversion ratio of the circuit. This high efficiency modular converter has flexible conversion ratio, and it could be successfully used in a multi-bus power system by virtue of its inherent power management properties.
{"title":"A 5 kW Bi-directional Multilevel Modular DC-DC Converter (MMCCC) Featuring Built in Power Management for Fuel Cell and Hybrid Electric Automobiles","authors":"F. Khan, L. Tolbert","doi":"10.1109/VPPC.2007.4544127","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544127","url":null,"abstract":"A new capacitor clamped modular dc-dc converter with bi-directional power handling capability will be presented in this paper. This inductor-free design is modular, and it is possible to integrate multiple loads and sources simultaneously in the converter. Moreover, this 5 kW dc-dc converter can produce multiple ac outputs to feed power to ac loads or transformers to get further control over the conversion ratio of the circuit. This high efficiency modular converter has flexible conversion ratio, and it could be successfully used in a multi-bus power system by virtue of its inherent power management properties.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115590049","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544123
J. Wang, A. Griffo, L. Han, D. Howe
This paper analyzes the input admittance/impedance characteristics of a permanent-magnet brushless AC motor drive system, taking account of the influence of both current and speed control loops as well as the motor and inverter losses. It is shown that, if voltage feedforward compensation is not employed, the input admittance of the drive system differs significantly from that of an ideal constant power load, and is influenced by the speed and current control loop bandwidths. It is also shown that, when the drive is connected to a DC supply via an LRC filter, the magnitude of the input admittance at the filter resonant frequency has a crucial effect on system stability margin.
{"title":"Input Admittance Characteristics of Permanent Magnet Brushless AC Motor Drive Systems","authors":"J. Wang, A. Griffo, L. Han, D. Howe","doi":"10.1109/VPPC.2007.4544123","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544123","url":null,"abstract":"This paper analyzes the input admittance/impedance characteristics of a permanent-magnet brushless AC motor drive system, taking account of the influence of both current and speed control loops as well as the motor and inverter losses. It is shown that, if voltage feedforward compensation is not employed, the input admittance of the drive system differs significantly from that of an ideal constant power load, and is influenced by the speed and current control loop bandwidths. It is also shown that, when the drive is connected to a DC supply via an LRC filter, the magnitude of the input admittance at the filter resonant frequency has a crucial effect on system stability margin.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114260033","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544125
O. Mansouri, M. Khair Allah, K. Meghriche, A. Cherifi
This paper presents a precalculated PWM approach to determine the switching angles of a three-phase inverter, so as to minimize the number of switching actions undergone by the power switches, the total harmonic distortion (THD) rate and increase the output voltage fundamental amplitude.
{"title":"Novel Approach for Switching and Harmonics Reduction for Three-Phase Inverter Using Precalculated PWM","authors":"O. Mansouri, M. Khair Allah, K. Meghriche, A. Cherifi","doi":"10.1109/VPPC.2007.4544125","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544125","url":null,"abstract":"This paper presents a precalculated PWM approach to determine the switching angles of a three-phase inverter, so as to minimize the number of switching actions undergone by the power switches, the total harmonic distortion (THD) rate and increase the output voltage fundamental amplitude.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114530646","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544241
M. Mirzaei, A. Dehghan, B. Asaei
Motor cycles are one of the major sources of air pollution in crowded cities. In order to alleviate this problem, instead of the internal combustion engines new technologies such as pure PEM fuel cell system or hybrid system can be utilized. In this paper, a hybrid fuel cell system has been modeled and optimized. This system includes fuel cell stack, compressor, humidifier, pump, blower, hydrogen storage tank and chemical battery. After optimization, by using the Simulink software the system performance under the standard driving cycle (FTP75) has been simulated and the results of that have been compared with the non-hybrid system.
{"title":"Design and Simulation of a Fuel Cell Hybrid Powered Motorcycle and Comparison with Non-Hybrid System","authors":"M. Mirzaei, A. Dehghan, B. Asaei","doi":"10.1109/VPPC.2007.4544241","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544241","url":null,"abstract":"Motor cycles are one of the major sources of air pollution in crowded cities. In order to alleviate this problem, instead of the internal combustion engines new technologies such as pure PEM fuel cell system or hybrid system can be utilized. In this paper, a hybrid fuel cell system has been modeled and optimized. This system includes fuel cell stack, compressor, humidifier, pump, blower, hydrogen storage tank and chemical battery. After optimization, by using the Simulink software the system performance under the standard driving cycle (FTP75) has been simulated and the results of that have been compared with the non-hybrid system.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115101859","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544159
S. Dwari, L. Parsa
In this paper an efficient high power high-step up dc- dc converter is presented for interfacing distributed energy storage elements like, fuel cells, batteries, and ultracapacitors with the high voltage dc bus in Electrical Vehicles (EV) and Hybrid Electric Vehicles (HEV). In the proposed converter, coupled-inductor boost converters are interleaved and a boost converter is used to clamp the switch voltage of the interleaved converters at a lower voltage. Leakage energy of all the interleaved converters are gathered in one clamping capacitor and discharged to the output by the clamping boost converter. The interleaving and low voltage clamping of coupled-inductor boost converters enable to achieve high efficiency. Design and analysis of the proposed converter are presented. Finally simulation results are provided for verification of the proposed converter.
{"title":"A Novel High Efficiency High Power Interleaved Coupled-Inductor Boost DC-DC Converter for Hybrid and Fuel Cell Electric Vehicle","authors":"S. Dwari, L. Parsa","doi":"10.1109/VPPC.2007.4544159","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544159","url":null,"abstract":"In this paper an efficient high power high-step up dc- dc converter is presented for interfacing distributed energy storage elements like, fuel cells, batteries, and ultracapacitors with the high voltage dc bus in Electrical Vehicles (EV) and Hybrid Electric Vehicles (HEV). In the proposed converter, coupled-inductor boost converters are interleaved and a boost converter is used to clamp the switch voltage of the interleaved converters at a lower voltage. Leakage energy of all the interleaved converters are gathered in one clamping capacitor and discharged to the output by the clamping boost converter. The interleaving and low voltage clamping of coupled-inductor boost converters enable to achieve high efficiency. Design and analysis of the proposed converter are presented. Finally simulation results are provided for verification of the proposed converter.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124299846","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544232
S. Rhyu, Yong-kyoun Kim, Jun-Hyuk Choi, J. Hur, Doo-hyung Lee
A lot of conventional automotive components driven by mechanical power source are being replaced with electrical ones to comply with the demands of market and customer, therefore the amount of electric energy used in a vehicle will be increased continuously. The increment of electric power demand causes interest on new higher power system such as 42V Power Net, and furthermore necessity for development of energy storage device is highlighted recently. The electro- hydraulic power steering (EHPS) system is one of them. This paper presents the development of the electric driven pump unit for EHPS system of 42V automobile, which is to install interior type permanent magnet synchronous motor.
{"title":"Development of an Electric Driven Pump Unit for Electro-Hydraulic Power Steering of 42V Automobile","authors":"S. Rhyu, Yong-kyoun Kim, Jun-Hyuk Choi, J. Hur, Doo-hyung Lee","doi":"10.1109/VPPC.2007.4544232","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544232","url":null,"abstract":"A lot of conventional automotive components driven by mechanical power source are being replaced with electrical ones to comply with the demands of market and customer, therefore the amount of electric energy used in a vehicle will be increased continuously. The increment of electric power demand causes interest on new higher power system such as 42V Power Net, and furthermore necessity for development of energy storage device is highlighted recently. The electro- hydraulic power steering (EHPS) system is one of them. This paper presents the development of the electric driven pump unit for EHPS system of 42V automobile, which is to install interior type permanent magnet synchronous motor.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123818906","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544170
S. Filizadeh, A. R. Chevrefils, D. Northcott
Analysis and design of vehicular power systems using an electromagnetic transient simulation tool is addressed and demonstrated using the PSCAD/EMTDC simulation program. The paper describes principles of modeling and solution techniques used, and interfacing capabilities for model development for emerging drive- train components. Design-oriented techniques such as optimization and sensitivity analysis are also presented.
{"title":"Analysis and Design of Vehicular Power Systems Using PSCAD/EMTDC","authors":"S. Filizadeh, A. R. Chevrefils, D. Northcott","doi":"10.1109/VPPC.2007.4544170","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544170","url":null,"abstract":"Analysis and design of vehicular power systems using an electromagnetic transient simulation tool is addressed and demonstrated using the PSCAD/EMTDC simulation program. The paper describes principles of modeling and solution techniques used, and interfacing capabilities for model development for emerging drive- train components. Design-oriented techniques such as optimization and sensitivity analysis are also presented.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124735116","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 : 2007-09-01DOI: 10.1109/VPPC.2007.4544173
S. Sadiq, E. Pritchard, K. Dulaney, A. Emadi
Like with the passenger car and transit bus markets, school buses can benefit from plug-in hybrid technology. Advanced energy corporation established the plug-in hybrid electric school bus (HESB) project to create the demand for plug-in hybrid school buses required for a bus manufacturer to invest in the development of this technology. Nationwide 12 school districts in NY, PA, VA, DC, NC, SC, FL, IA, AK, TX, WA, and CA have purchased 19 plug-in hybrid buses in the project with all buses to be delivered by the end of 2007. Each bus is a type-C school bus with a VT365, 200-215 hp diesel engine by IC Corporation, a 25/80-kW AC induction motor and hybrid drivetrain from Enova Systems, and a 330-V Li-ion battery pack from Valence Technologies. The total cost of each bus ranges from $200,000-$220,000, including an estimated $140,000 premium for the plug-in hybrid system. This paper addresses the specific challenges that face the transportation industry as a whole, summarizes earlier studies that demonstrate the technical and economical feasibility of plug-in hybrid school buses, describes the HESB project, and draws future plans to show why hybrids are an excellent solution for the school bus market.
{"title":"Plug-In Hybrid Market Transformation by Leveraging a Niche Market: School Buses","authors":"S. Sadiq, E. Pritchard, K. Dulaney, A. Emadi","doi":"10.1109/VPPC.2007.4544173","DOIUrl":"https://doi.org/10.1109/VPPC.2007.4544173","url":null,"abstract":"Like with the passenger car and transit bus markets, school buses can benefit from plug-in hybrid technology. Advanced energy corporation established the plug-in hybrid electric school bus (HESB) project to create the demand for plug-in hybrid school buses required for a bus manufacturer to invest in the development of this technology. Nationwide 12 school districts in NY, PA, VA, DC, NC, SC, FL, IA, AK, TX, WA, and CA have purchased 19 plug-in hybrid buses in the project with all buses to be delivered by the end of 2007. Each bus is a type-C school bus with a VT365, 200-215 hp diesel engine by IC Corporation, a 25/80-kW AC induction motor and hybrid drivetrain from Enova Systems, and a 330-V Li-ion battery pack from Valence Technologies. The total cost of each bus ranges from $200,000-$220,000, including an estimated $140,000 premium for the plug-in hybrid system. This paper addresses the specific challenges that face the transportation industry as a whole, summarizes earlier studies that demonstrate the technical and economical feasibility of plug-in hybrid school buses, describes the HESB project, and draws future plans to show why hybrids are an excellent solution for the school bus market.","PeriodicalId":345424,"journal":{"name":"2007 IEEE Vehicle Power and Propulsion Conference","volume":"159 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120889672","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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