Wind power generation is in a period of rapid development due to its mature technology and environmental friendliness. Wind turbine is the main equipment for wind power generation, and the performance of its gearbox determines the stability and economy of power generation. This paper introduces the changes of installed capacity in various stages of wind power generation in the world, analyzes the common failure forms of wind turbine gearboxes, and on this basis, studies the failure parts and main causes, and further puts forward preventive measures for the failure forms of gearboxes, which can provide reference for wind farm personnel to carry out maintenance of wind turbines
{"title":"Research on failure and prevention of wind turbine gearbox","authors":"Xiuqi Zhang, Shuai Yuan, Liqiang Wang","doi":"10.1117/12.2689877","DOIUrl":"https://doi.org/10.1117/12.2689877","url":null,"abstract":"Wind power generation is in a period of rapid development due to its mature technology and environmental friendliness. Wind turbine is the main equipment for wind power generation, and the performance of its gearbox determines the stability and economy of power generation. This paper introduces the changes of installed capacity in various stages of wind power generation in the world, analyzes the common failure forms of wind turbine gearboxes, and on this basis, studies the failure parts and main causes, and further puts forward preventive measures for the failure forms of gearboxes, which can provide reference for wind farm personnel to carry out maintenance of wind turbines","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130125737","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}
Duo to the wide band gaps, fast saturated electron drift velocities and high breakdown electric field strength of the silicon carbide (SiC), it is an appropriate candidate to develop power supplies working in high temperature and high voltage environments. Usually, the requirement on the reliability of these devices is much higher than those of the universal power supplies. Based on the real device structure of the 4H-SiC MOSFET, the output characteristic is simulated with TCAD package and verified by comparing with the testing results from the datasheet, which provides the data set for training BP neural network. Furthermore, an BP neural network is trained to predict the output characteristics of the MOSFET. Agreement between the predicted characteristics and real characteristics is achieved. The trained neural network can be easily integrated in embedded system and provides the possibility for health monitoring and fault diagnosis based on artificial intelligence.
{"title":"Characteristics prediction on SiC MOSFET implemented with BP neural network","authors":"Jiuxu Song, Yaoshuai Yang","doi":"10.1117/12.2689736","DOIUrl":"https://doi.org/10.1117/12.2689736","url":null,"abstract":"Duo to the wide band gaps, fast saturated electron drift velocities and high breakdown electric field strength of the silicon carbide (SiC), it is an appropriate candidate to develop power supplies working in high temperature and high voltage environments. Usually, the requirement on the reliability of these devices is much higher than those of the universal power supplies. Based on the real device structure of the 4H-SiC MOSFET, the output characteristic is simulated with TCAD package and verified by comparing with the testing results from the datasheet, which provides the data set for training BP neural network. Furthermore, an BP neural network is trained to predict the output characteristics of the MOSFET. Agreement between the predicted characteristics and real characteristics is achieved. The trained neural network can be easily integrated in embedded system and provides the possibility for health monitoring and fault diagnosis based on artificial intelligence.","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129168218","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}
The dual-PWM frequency control system needs to set a filter on the grid side to suppress harmonic current. By analyzing the difference of operation characteristics between LCL filter and L filter, the parameters of L filter are optimized in order to reduce the volume of rectifier, taking into account the filtering effect, current fast tracking ability and system fast response ability; A PWM rectifier control algorithm based on L-filter is proposed, and the parameters of voltage and current loop controller are adjusted to realize the control of fast current tracking, stable voltage output and power factor of 1 on the grid side. The simulation and experimental results verify the correctness of L-filter design and the effectiveness of PWM rectifier control algorithm
{"title":"Mine-using research of PWM rectifier control algorithm based on L filter","authors":"Yue Wang, Hanjie Shi","doi":"10.1117/12.2689450","DOIUrl":"https://doi.org/10.1117/12.2689450","url":null,"abstract":"The dual-PWM frequency control system needs to set a filter on the grid side to suppress harmonic current. By analyzing the difference of operation characteristics between LCL filter and L filter, the parameters of L filter are optimized in order to reduce the volume of rectifier, taking into account the filtering effect, current fast tracking ability and system fast response ability; A PWM rectifier control algorithm based on L-filter is proposed, and the parameters of voltage and current loop controller are adjusted to realize the control of fast current tracking, stable voltage output and power factor of 1 on the grid side. The simulation and experimental results verify the correctness of L-filter design and the effectiveness of PWM rectifier control algorithm","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134400999","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}
Weichao Ou, Jinrong Chen, Feng Liao, Yueqiang Wang
The reliability of data transmission in traditional protection systems mainly depends on the redundant realization of the communication network. The protection devices in the system do not have the capability and transmission mechanism for redundant data transmission. In order to solve this problem, this paper proposes a data redundancy transmission method based on protection devices, so that the protection devices in the system can be directly connected to each other and data transmission can be realized. Through the repeated transmission and reception of data by different communication ports of each protection device, a set of multi-port data dynamic transmission strategy based on protection device is established, forming a redundant transmission method that does not depend on network communication equipment. This method reduces equipment costs while improving communication efficiency and reliability.
{"title":"Research on redundant transmission method of distribution network protection data based on device direct connection","authors":"Weichao Ou, Jinrong Chen, Feng Liao, Yueqiang Wang","doi":"10.1117/12.2689749","DOIUrl":"https://doi.org/10.1117/12.2689749","url":null,"abstract":"The reliability of data transmission in traditional protection systems mainly depends on the redundant realization of the communication network. The protection devices in the system do not have the capability and transmission mechanism for redundant data transmission. In order to solve this problem, this paper proposes a data redundancy transmission method based on protection devices, so that the protection devices in the system can be directly connected to each other and data transmission can be realized. Through the repeated transmission and reception of data by different communication ports of each protection device, a set of multi-port data dynamic transmission strategy based on protection device is established, forming a redundant transmission method that does not depend on network communication equipment. This method reduces equipment costs while improving communication efficiency and reliability.","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131696285","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}
It is particularly important to improve specific energy of the power system, lightweight design of battery box before battery technology has made a major breakthrough. The paper uses Hypermesh software to analyze and solve the multiple working conditions of battery upper box. According to analysis results, OptiStruct software was used to optimize the shape of upper box. Through the reasonable arrangement of stiffeners, the mass of battery upper box was reduced by 12.1%, and the first-order natural frequency was increased by 5% to meeting the design requirements. This optimization scheme has certain reference significance for the design of battery upper box.
{"title":"Topography optimization of battery upper box based on OptiStruct","authors":"Xiaojuan Lin, Jianwen Cai, Linjun Tong, Z. Long","doi":"10.1117/12.2690097","DOIUrl":"https://doi.org/10.1117/12.2690097","url":null,"abstract":"It is particularly important to improve specific energy of the power system, lightweight design of battery box before battery technology has made a major breakthrough. The paper uses Hypermesh software to analyze and solve the multiple working conditions of battery upper box. According to analysis results, OptiStruct software was used to optimize the shape of upper box. Through the reasonable arrangement of stiffeners, the mass of battery upper box was reduced by 12.1%, and the first-order natural frequency was increased by 5% to meeting the design requirements. This optimization scheme has certain reference significance for the design of battery upper box.","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133965501","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}
The miniaturization and lightweight of wireless EV chargers are of great significance. For the inductive power transfer system based on double-sided LCC compensation topology, an integrated design is proposed in which all the magnetically coupled components and compensation components are integrated into the aluminum shell of wireless chargers. For the quadrature arrangement of DD coils, including the main inductor and compensation inductor, the magnetic field distribution of the magnetic coupler is analyzed, the influence of ferrite thickness is studied, and the optimization method of ferrite shape is presented. Under the condition that the magnetic coupling effect is very little affected, the weight of ferrites in the proposed optimized scheme is reduced by 47% compared with the initial scheme. In the prototype experiment, the DC-DC efficiency reached 95.38% when the output power of the system was 6.93 kW.
{"title":"Optimization of ferrites structure based on integrated coil design for wireless EV charger","authors":"Shuo Wang, Kang Yang, Shan Huang, Boning Zhang, Junjun Deng, Baokun Zhang","doi":"10.1117/12.2689421","DOIUrl":"https://doi.org/10.1117/12.2689421","url":null,"abstract":"The miniaturization and lightweight of wireless EV chargers are of great significance. For the inductive power transfer system based on double-sided LCC compensation topology, an integrated design is proposed in which all the magnetically coupled components and compensation components are integrated into the aluminum shell of wireless chargers. For the quadrature arrangement of DD coils, including the main inductor and compensation inductor, the magnetic field distribution of the magnetic coupler is analyzed, the influence of ferrite thickness is studied, and the optimization method of ferrite shape is presented. Under the condition that the magnetic coupling effect is very little affected, the weight of ferrites in the proposed optimized scheme is reduced by 47% compared with the initial scheme. In the prototype experiment, the DC-DC efficiency reached 95.38% when the output power of the system was 6.93 kW.","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132509152","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}
Weather radar simulation technology has many applications in civil aviation, military and other fields. Using the emulator, weather radar signals from the past can be observed repeatedly. With the development of electronic circuit technology, weather radar emulators develop to a faster response speed. This paper introduces a weather radar emulator based on DDS technology and details its design and realization. The test results show that the system can output the waveform specified by the upper computer and drive the upper computer to produce weather radar images.
{"title":"Weather radar emulator based on DDS technology","authors":"Chuhua Li, Y. Li","doi":"10.1117/12.2689670","DOIUrl":"https://doi.org/10.1117/12.2689670","url":null,"abstract":"Weather radar simulation technology has many applications in civil aviation, military and other fields. Using the emulator, weather radar signals from the past can be observed repeatedly. With the development of electronic circuit technology, weather radar emulators develop to a faster response speed. This paper introduces a weather radar emulator based on DDS technology and details its design and realization. The test results show that the system can output the waveform specified by the upper computer and drive the upper computer to produce weather radar images.","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114730116","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}
In this paper, a compensation network parameter design method based on multi-objective optimization algorithm has been proposed to meet the robust requirements of the output characteristics of wireless power transfer (WPT) system under non-resonant conditions. The equivalent circuit mathematical model of WPT system under non-resonant condition is established, and the sensitivity of system output characteristics to different component parameters is analyzed. A compensatory topology parameter optimization method of double-sided LCC based on NSGAII algorithm is proposed, which effectively reduces the system output power fluctuation when multiple parameters fluctuate together, improves the output characteristics of the double-sided LCC WPT system, and enhances the robustness of the system output. Finally, the proposed method is validated by comparing the power variation before and after the system parameter optimization under the condition of multi-parameter combined fluctuation and the condition of sensitive parameter random fluctuation. It has lower power variation when component parameter fluctuates randomly and it improves the controllability of the system to a certain extent.
{"title":"Robust optimization of double-sided LCC compensation topology based on NSGAⅡ algorithm","authors":"X. Cui, Shaohua Du, Wanying Zhao, Xinyang Wang, Junjun Deng, Baohua Xu","doi":"10.1117/12.2689723","DOIUrl":"https://doi.org/10.1117/12.2689723","url":null,"abstract":"In this paper, a compensation network parameter design method based on multi-objective optimization algorithm has been proposed to meet the robust requirements of the output characteristics of wireless power transfer (WPT) system under non-resonant conditions. The equivalent circuit mathematical model of WPT system under non-resonant condition is established, and the sensitivity of system output characteristics to different component parameters is analyzed. A compensatory topology parameter optimization method of double-sided LCC based on NSGAII algorithm is proposed, which effectively reduces the system output power fluctuation when multiple parameters fluctuate together, improves the output characteristics of the double-sided LCC WPT system, and enhances the robustness of the system output. Finally, the proposed method is validated by comparing the power variation before and after the system parameter optimization under the condition of multi-parameter combined fluctuation and the condition of sensitive parameter random fluctuation. It has lower power variation when component parameter fluctuates randomly and it improves the controllability of the system to a certain extent.","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116810602","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}
In multi-attribute decision making, the aggregation method of each attribute value is always one of the core issues of research. This paper presents a novel aggregation operator as the further study to ICOWA operator. Firstly, the paper gives the method of converting interval number into binary connection number, and achieves the ranking of interval number by calculating the set pair potential of binary connection number. On this basis, a new induced interval number weighted averaging operator based on set pair potential (SP-ICOWA) is given, and it is proved that this operator has good properties such as boundedness, idempotence, commutativity. Finally, an example of the evaluation of the fire fighting capability of a ship is given. The continuous ordered weighted averaging operator (COWA) and SP-ICOWA are both used to calculate the fire fighting capability of a ship, the result manifests the feasibility and validity of SP-ICOWA operator.
{"title":"Induced continuous ordered weighted averaging aggregation operator to interval numbers based on set pair potentials","authors":"Ping Xiong, Huabin Cheng","doi":"10.1117/12.2689372","DOIUrl":"https://doi.org/10.1117/12.2689372","url":null,"abstract":"In multi-attribute decision making, the aggregation method of each attribute value is always one of the core issues of research. This paper presents a novel aggregation operator as the further study to ICOWA operator. Firstly, the paper gives the method of converting interval number into binary connection number, and achieves the ranking of interval number by calculating the set pair potential of binary connection number. On this basis, a new induced interval number weighted averaging operator based on set pair potential (SP-ICOWA) is given, and it is proved that this operator has good properties such as boundedness, idempotence, commutativity. Finally, an example of the evaluation of the fire fighting capability of a ship is given. The continuous ordered weighted averaging operator (COWA) and SP-ICOWA are both used to calculate the fire fighting capability of a ship, the result manifests the feasibility and validity of SP-ICOWA operator.","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123627958","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}
In distributed passive localization and tracking system, the track observed by the subsystem seems like Brownian motion track, because the tracked target is non-cooperative target and its maneuver is often complex, and the localization accuracy is poor. These track characteristics will seriously disturb track association between different subsystems. In order to solve this problem, the track to track association algorithm based on empirical mode decomposition (EMD) is proposed in this article. To lessen the impact of target placement and maneuvering mistakes, components that do not follow the track trend are removed from each dimension of the track recorded by each sub-system. The track motion trend vector is formed using the remaining low-frequency components as track characteristics, and the relevant correlation criteria are created. The track association between sub-systems is ultimately finished since the correlation threshold is self-adaptive and does not require the creation of a motion model. Results from simulations indicate that the suggested method is capable of successfully completing the track connection in passive systems
{"title":"Track association based on the empirical mode decomposition in passive localization","authors":"Kai Lu, Chundong Qi","doi":"10.1117/12.2689576","DOIUrl":"https://doi.org/10.1117/12.2689576","url":null,"abstract":"In distributed passive localization and tracking system, the track observed by the subsystem seems like Brownian motion track, because the tracked target is non-cooperative target and its maneuver is often complex, and the localization accuracy is poor. These track characteristics will seriously disturb track association between different subsystems. In order to solve this problem, the track to track association algorithm based on empirical mode decomposition (EMD) is proposed in this article. To lessen the impact of target placement and maneuvering mistakes, components that do not follow the track trend are removed from each dimension of the track recorded by each sub-system. The track motion trend vector is formed using the remaining low-frequency components as track characteristics, and the relevant correlation criteria are created. The track association between sub-systems is ultimately finished since the correlation threshold is self-adaptive and does not require the creation of a motion model. Results from simulations indicate that the suggested method is capable of successfully completing the track connection in passive systems","PeriodicalId":118234,"journal":{"name":"4th International Conference on Information Science, Electrical and Automation Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128553792","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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