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Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering最新文献

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Quasi-PR Control of The Grid Connected Small Wind Power System 并网小型风力发电系统的准pr控制
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387030
Jinhui Zeng, Y. Rao, Yang Long
{"title":"Quasi-PR Control of The Grid Connected Small Wind Power System","authors":"Jinhui Zeng, Y. Rao, Yang Long","doi":"10.1145/3386415.3387030","DOIUrl":"https://doi.org/10.1145/3386415.3387030","url":null,"abstract":"Due to its high reliability, high energy efficiency and low cost, grid connected small wind power system has become a major research focus in the world. In small wind power grid connection system, inverter is the core circuit. This paper presents a new control strategy for inverter: quasi-PR control. First, this paper introduces the background and research significance of small wind power grid integration. Second, this paper proposes a simple and efficient grid connected small wind power system. Thirdly, some key technologies of grid-connected inverter are given. Fourthly, traditional PI control and quasi-PR control are analyzed. Finally, based on the above analysis, quasi-PR control is selected as the control strategy of inverter through simulation comparison. Small wind power grid connected system has unique advantages, which will play an important role in wind energy utilization in the future.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129564102","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}
引用次数: 0
Hierarchical Reconfiguration Optimization of Distribution Network Considering Multiple Indexes 考虑多指标的配电网络分层重构优化
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387079
Jun Liu, Fan Yang, Ziyang Song, Xiaokang Liu
{"title":"Hierarchical Reconfiguration Optimization of Distribution Network Considering Multiple Indexes","authors":"Jun Liu, Fan Yang, Ziyang Song, Xiaokang Liu","doi":"10.1145/3386415.3387079","DOIUrl":"https://doi.org/10.1145/3386415.3387079","url":null,"abstract":"With the enlarging scale of distribution network and increasing access users, distribution network has more and more complicated wiring. The existing adjustment methods based on manual operation are not only inefficient, but are also difficult to provide optimal adjustment solution. In this paper, hierarchical reconfiguration of distribution network involving multiple indexes is proposed to establish a mathematical optimization model for network reconfiguration. Examples are analyzed using a typical regional distribution network. The examples indicate that this method can reduce part of unnecessary reconfiguration analysis, and when there is need for the network to perform reconfiguration calculation, the method achieves a good optimization effect in the calculation. This optimization method can improve and optimize the distribution network in terms of economy, safety, reliability, etc.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130821920","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}
引用次数: 0
An Enterprise Public Opinion Emergency Response System 企业舆情应急响应系统
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387104
Jialun Wu, Congguang Luo, Wei Zhang, Pan Liu
{"title":"An Enterprise Public Opinion Emergency Response System","authors":"Jialun Wu, Congguang Luo, Wei Zhang, Pan Liu","doi":"10.1145/3386415.3387104","DOIUrl":"https://doi.org/10.1145/3386415.3387104","url":null,"abstract":"The public opinion emergency response on the Internet has become one of the effective means for modern enterprises to prevent and respond to network risks. This paper describes an enterprise public opinion emergency response system based on natural language processing (NLP) technology and search engine optimization technology. The proposed system consists of network information collection, data analysis, public opinion monitoring, strategy recommendation, and emergency response. The system's characteristics and technical architecture are introduced and some related core algorithms such as public opinion collection and filtering algorithms and public opinion response strategy recommendation algorithms are stated. Through an integrated network marketing solution, the system supports the response to public opinion response based on the results of big data analysis, and solves the empirical and timeliness problems that traditional online marketing has in the case of public opinion response.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123325313","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}
引用次数: 2
A Touch Display Panel Control System Based on FPGA and PIC 基于FPGA和PIC的触摸屏控制系统
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387099
Zeyan Zhan
{"title":"A Touch Display Panel Control System Based on FPGA and PIC","authors":"Zeyan Zhan","doi":"10.1145/3386415.3387099","DOIUrl":"https://doi.org/10.1145/3386415.3387099","url":null,"abstract":"In recent years, with the development of embedded systems, industrial control systems have higher requirements for visualization. Data obtained by sensors are not only huge in quantity but also with fast updating frequency. Therefore, how to analyze and integrate effective data to provide to users has become an urgent problem to be solved. This paper introduces a Online Float Glass Defect Marking Management System based on PIC18F97J60 MCU and Xilinx XC7Z020CSG484C1 FPGA chip as the control core, using Omron nb7w-tw00b Touch Display panel. The system is connected to the upper Glass Defect Detection System through the Ethernet network, receives the defect coordinates transmitted by the upper system and marks them on the glass, and communicate with the touch Display Panel uses MODBUS protocol, realizing the visualization of the whole system.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121435619","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}
引用次数: 0
Decoupling Vector Modulation Strategy for Three-Phase High Frequency Chain Matrix Converter 三相高频链矩阵变换器的解耦矢量调制策略
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387047
Shengqing Li, Chenyang Wang, Jian Zheng, Heng Zhang, Yuanming He, Zhichao Shen
{"title":"Decoupling Vector Modulation Strategy for Three-Phase High Frequency Chain Matrix Converter","authors":"Shengqing Li, Chenyang Wang, Jian Zheng, Heng Zhang, Yuanming He, Zhichao Shen","doi":"10.1145/3386415.3387047","DOIUrl":"https://doi.org/10.1145/3386415.3387047","url":null,"abstract":"Aiming at the problem of large total harmonic distortion for output voltage and current of a three-phase high-frequency chain matrix converter, a decoupling vector modulation strategy suitable for a two-stage transformation is performed. Firstly, the α-β coordinate plane is divided into 12 sectors to obtain space vector modulation signals. Secondly, a converter composed of bidirectional controllable switchs is decomposed into two single-phase controllable switching converters by using the polarity selection signal. Finally, the space vector modulation signal and polarity selection are logically combined to obtain power tube drive signals, which provide a freewheeling path during commutation, reducing commutation dead time. Simulation results show that, compared with the total harmonic distortion for voltage and current of conventional modulation strategy, those of the proposed stategy are respectively reduced by 1.84% and 0.7%when the output frequency is 50Hz, and1.79% and 1.5%, When 30Hz.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116075439","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}
引用次数: 0
A New Weighted Average Current Control Strategy for System Reduction 一种新的加权平均电流控制策略
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387053
Qiang Wu, Xinluo Li, Jiaxing Yu, Wang Han
{"title":"A New Weighted Average Current Control Strategy for System Reduction","authors":"Qiang Wu, Xinluo Li, Jiaxing Yu, Wang Han","doi":"10.1145/3386415.3387053","DOIUrl":"https://doi.org/10.1145/3386415.3387053","url":null,"abstract":"In the presence of a weak grid environment, stability margin of the current control of the LCL grid-tie inverter will be reduced, and stability margin gradually worsens with the increase of the inductive component in the grid impedance. In view of the above problems, this paper presents a control method, based on active damping control of grid voltage feed-forward. Through the zero-pole cancellation method, a new weighting coefficient is obtained, which reduces the order of system, improves the stability of the system, get better inverter output current quality. Finally, it is proved that the control method is available through Bode plot analysis and Matlab results.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116704610","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}
引用次数: 0
Research on Deep Current Limiting Adaptive Reclosure in 10kV Distribution Network 10kV配电网深部限流自适应重合闸研究
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387004
Miaomiao Song, Jian Liu, Ning Wang
{"title":"Research on Deep Current Limiting Adaptive Reclosure in 10kV Distribution Network","authors":"Miaomiao Song, Jian Liu, Ning Wang","doi":"10.1145/3386415.3387004","DOIUrl":"https://doi.org/10.1145/3386415.3387004","url":null,"abstract":"Because the traditional automatic reclosing method used in distribution lines will cause great influence on the system and electrical equipment such as circuit breakers when the short-circuit current is reclosed to permanent fault, a deep current-limiting type adaptive reclosing device is proposed, in which the test impedance is put in when the fault occurs and the current passing through the test impedance is utilized. Sex identifies the nature of the fault. Considering the current limiting depth, the volume heating of the test impedance and the need to distinguish the fault characteristics reliably, the reasonable selection of the resistance value of the test impedance and the influence of inrush current and low voltage load release on fault identification are analyzed. The simulation results show that the proposed method can accurately identify the nature of the fault under a reasonable trial impedance, and the short-circuit current will not impact the system when it coincides with a permanent fault.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"365 6455 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127791077","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}
引用次数: 0
Design of The A Side Core-Pulling Injection Mold for Plastic Shells 塑料外壳A侧抽芯注塑模具设计
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387070
Hao-Sheng Lin, Xiaoming Liao
{"title":"Design of The A Side Core-Pulling Injection Mold for Plastic Shells","authors":"Hao-Sheng Lin, Xiaoming Liao","doi":"10.1145/3386415.3387070","DOIUrl":"https://doi.org/10.1145/3386415.3387070","url":null,"abstract":"Taking a plastic shell as an example, analyzing to the structure and technology of the plastic parts. According to the characteristics and requirements of the structural of plastic parts, the design of mold adopts the way of the pin point nozzle to the edge gate [1-4]. The core of the mold is designed as a mosaic structure, the two side core-pulling mechanisms of the angle lift and the sliding block, and the circulation cooling system is arranged [4-6]. The mould has the advantages of the table operation cycle, with the simple structure, high production efficiency, and the product qualification rate is over 99%.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133740730","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}
引用次数: 0
Energy Saving Control of Subway Based on PMSM Traction Feedforward 基于永磁同步电机牵引前馈的地铁节能控制
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387062
Xin Wang, Ying Luo, B. Qin
{"title":"Energy Saving Control of Subway Based on PMSM Traction Feedforward","authors":"Xin Wang, Ying Luo, B. Qin","doi":"10.1145/3386415.3387062","DOIUrl":"https://doi.org/10.1145/3386415.3387062","url":null,"abstract":"Safe and comfortable subway has the advantages of energy saving and emission reduction. Regenerative braking energy can be effectively recycled in the frequent starting braking process. On the condition of braking energy leading to energy waste, the up of traction grid voltage can be seen in the scheme of permanent magnet synchronous motor (PMSM) vector control (VC) and inverter feedback regenerative braking energy, the coordination and optimization control is proposed and the whole structure is designed the model is built, including a power supply, a PMSM VC and the regenerative braking energy recovery. RT-LAB realtime simulation is made based on subway actual parameters. The simulation results show that the hybrid method can guarantee the stability of DC traction network voltage in the process of the regenerative braking energy inverter feedback, under the condition of effectively recycling of braking energy.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132126945","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}
引用次数: 0
The Thermal Model of IGBT Junction Temperature Calculation and Application in VSC-HVDC Projects IGBT结温热模型计算及在直流直流工程中的应用
Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering Pub Date : 2019-12-06 DOI: 10.1145/3386415.3387008
Kun Liu, Changshu Huang, Qiong Yu, J. Lu, Yansheng Zou
{"title":"The Thermal Model of IGBT Junction Temperature Calculation and Application in VSC-HVDC Projects","authors":"Kun Liu, Changshu Huang, Qiong Yu, J. Lu, Yansheng Zou","doi":"10.1145/3386415.3387008","DOIUrl":"https://doi.org/10.1145/3386415.3387008","url":null,"abstract":"IGBT junction temperature is tightly related to the operation and reliability, and the IGBT modules are the key components in VSC-HVDC projects where the requirements for reliability are extremely high, so the prediction of IGBT junction temperature has a significant importance in the design of IGBT module heat sink to improve IGBT reliability and extend service lifetime. This paper presents the method to calculate IGBT junciton temperature, and a complete RC thermal model applying PSIM is built. The model is applied in a VSC-HVDC project, and the results show that the parameters of heat sink is proper and IGBT junction temeperature is controlled in safe region.","PeriodicalId":250211,"journal":{"name":"Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114688702","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}
引用次数: 0
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