发布求助
文献互助 智能选刊 最新文献

2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)最新文献

筛选
英文 中文
An Enhanced SVPWM Method of Suppressing Common-Mode Voltage in Dual Three-Phase Motor 一种增强的SVPWM抑制双三相电机共模电压的方法
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646087
Bohu Zhang, H. Hua, Zicheng Zhou
{"title":"An Enhanced SVPWM Method of Suppressing Common-Mode Voltage in Dual Three-Phase Motor","authors":"Bohu Zhang, H. Hua, Zicheng Zhou","doi":"10.1109/SCEMS52239.2021.9646087","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646087","url":null,"abstract":"The common-mode voltage (CMV) in voltage-source PWM inverters is harmful to motor drive systems. An enhanced space vector pulse width modulation (SVPWM) method based on the careful selection of intermediate vectors is proposed in this paper, aiming at the modulation range improvement whilst the CMV suppression in dual three-phase drive systems. The intermediate vectors are synthesized by large/small voltage vectors and a higher linear modulation range can be obtained compared with the existing method. The theoretical analysis and simulation results are presented to verify the proposed method.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121944478","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
Effect of Rotor Interturn Short circuit degree and position on Stator Circulating Current inside Parallel Branches in Generators 发电机转子匝间短路程度和位置对并联支路内定子回路电流的影响
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646155
Ming‐Xing Xu, Yu‐Ling He, De‐Rui Dai, Xiang-Ao Liu, Wen-Jie Zheng, Wen Zhang
{"title":"Effect of Rotor Interturn Short circuit degree and position on Stator Circulating Current inside Parallel Branches in Generators","authors":"Ming‐Xing Xu, Yu‐Ling He, De‐Rui Dai, Xiang-Ao Liu, Wen-Jie Zheng, Wen Zhang","doi":"10.1109/SCEMS52239.2021.9646155","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646155","url":null,"abstract":"This paper presents a comprehensive analysis on the stator circulating current inside parallel branches (CCPB) under different rotor interturn short circuit (RISC) degree and positions. Firstly, based on the characteristics of the air gap magnetic field variation before and after RISC, the specific analytical expressions of the magnetic flux density (MFD), and the CCPB of the stator are derived. Then, taking the SDF-9 generator as the research object, the finite element analysis (FEA) is used to verify the circulation characteristics of the stator CCPB under different RISC degree and positions. Finally, the results are compared with the theoretical analysis, and the two changing trends are basically consistent. It is shown that the occurrence of RISC will cause even harmonic circulation components and the 2nd harmonic is the main component. As the degree of short circuit increases, the amplitudes of even harmonic circulation components of CCPB will show an increasing trend. In addition, the amplitude of the even harmonic circulation of the stator CCPB changes with position at the same short circuit degree.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122587035","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
Torque Analysis and Optimization of Synchronous Reluctance Motor Shielded by Magnetic Stator Can 磁定子屏蔽同步磁阻电机转矩分析与优化
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646129
Bowen Li, Hui Li, Xuewei Xiang
{"title":"Torque Analysis and Optimization of Synchronous Reluctance Motor Shielded by Magnetic Stator Can","authors":"Bowen Li, Hui Li, Xuewei Xiang","doi":"10.1109/SCEMS52239.2021.9646129","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646129","url":null,"abstract":"Shielded motors mostly use non-magnetic cans, which reduce the output torque of the motor. Based on equivalent magnetic network (EMN) and finite element analysis, the effect of magnetic stator can on the torque performance of synchronous reluctance motor is studied in this paper. Compared with unshielded motor, the average torque is increased and the torque ripple is reduced by using suitable material and thickness of stator can. The established EMN model of shielded synchronous reluctance motor can consider the influence of motor saturation, and its calculation speed far exceeds finite element analysis, while the accuracy is not much lower. Genetic algorithm combined with EMN model is used to optimize the design of the motor stator, aiming at increasing the output torque. Finally, the accuracy and effectiveness of the optimization results are verified by the finite element analysis.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126048399","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
Inrush Suppression Method of Transformer in an Offshore Power System 海上电力系统变压器浪涌抑制方法研究
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646144
Xingchao Jiao, Wei Chen, T. Zheng
{"title":"Inrush Suppression Method of Transformer in an Offshore Power System","authors":"Xingchao Jiao, Wei Chen, T. Zheng","doi":"10.1109/SCEMS52239.2021.9646144","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646144","url":null,"abstract":"Offshore platform power system is crucial to the development and utilization of marine resources. The inrush current of transformer is not conducive to the safe and stable operation of offshore platform. In this paper, three inrush current suppression methods, including controlling closing angle, phase splitting closing and using closing resistor, are introduced and comparatively analyzed. Base on the data of a real offshore multi-platform interconnected power system, a model system is built to validate the introduced methods. The simulation is carried out using EMTP-RV generated data, considering the influence of remnant flux and connection mode of transformers. Finally, the most suitable inrush suppression method for an offshore power system is suggested.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127125782","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 Modified Method for Initial Rotor Position Detection of Brushless DC Motor Based on Voltage Vector Injection 基于电压矢量注入的无刷直流电动机转子初始位置检测改进方法
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646113
Lu Zhou, Xinmin Li, Wei Chen, T. Shi
{"title":"A Modified Method for Initial Rotor Position Detection of Brushless DC Motor Based on Voltage Vector Injection","authors":"Lu Zhou, Xinmin Li, Wei Chen, T. Shi","doi":"10.1109/SCEMS52239.2021.9646113","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646113","url":null,"abstract":"In order to realize the rapid detection of initial rotor position of permanent magnet brushless DC motor (BLDCM) and reduce the application cost, an improved method of initial position of the motor rotor detection is proposed by combining the salient polarity and magnetic saturation of the motor itself. By successively injecting three voltage vectors into the motor winding and collecting the DC side current $i_{text{dc}}$ at the specified time, the terminal voltage comparison circuit is also designed to compare the magnitude relationship between the inactive phase terminal voltage of c or b and $U_{text{dc}}/2$ under the action of effective vector, which can quickly and accurately judge that the motor rotor position is actually in a 30 degree sector. The feasibility and correctness of the proposed method are verified by the experiments.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127164482","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: 1
General Analysis of Combinations of High Frequency Injected Auxiliary Coils in Displacement Sensorless Control 无位移传感器控制中高频注入辅助线圈组合的一般分析
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646095
Yi Zhang, Yu Wang, Chenglong Zhang, Wenjuan Hao
{"title":"General Analysis of Combinations of High Frequency Injected Auxiliary Coils in Displacement Sensorless Control","authors":"Yi Zhang, Yu Wang, Chenglong Zhang, Wenjuan Hao","doi":"10.1109/SCEMS52239.2021.9646095","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646095","url":null,"abstract":"For the traditional high frequency (HF) injection methods of bearingless motors, the HF signal is always injected into the armature winding, resulting in large suspension and torque ripples. In order to solve this problem, a general theory of combinations of HF injected auxiliary coils is presented in this paper. This theory aims to eliminate certain harmonics based on the vector superposition theory of the basic excitation vector, and can be employed for bearingless motors of all pole pairs combinations with concentrated windings. It has advantage of less influence on the suspension and torque control. This theory is implemented on a 12-tooth motor, and the correctness is verified by the simulation results using Ansoft.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"57 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133323205","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: 1
Power Grid Disturbance Prediction and Analysis Method Based on SIR Model 基于SIR模型的电网扰动预测与分析方法
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646114
Cheng Qian, Aiyuan Wang
{"title":"Power Grid Disturbance Prediction and Analysis Method Based on SIR Model","authors":"Cheng Qian, Aiyuan Wang","doi":"10.1109/SCEMS52239.2021.9646114","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646114","url":null,"abstract":"With the continuous development of the times and the continuous improvement of people's living standards, the power system is also keeping pace with the times. At the same time, the transmission of power grid disturbance is becoming more and more obvious. If we can't analyze the power grid disturbance in the process of power grid transmission, it will lead to the chain accident of power grid or large-scale power outage of power grid. This paper mainly studies the disturbance propagation characteristics of power grid, which has an important impact on the security and stability of power system. This paper cites the mature SIR model in the field of biology and combines it with the disturbance propagation of the power grid. By analyzing the model and analogy to the disturbance propagation of the power grid, this paper analyzes the impact of the disturbance propagation of the power grid on the stability of the power system, which makes it easier to further track and locate the disturbance source and give a first warning of the degree of the disturbance of the power grid, The model simulation shows that the scheme can effectively deal with the impact of disturbance propagation and make the power system operate more safely and stably.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129524614","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
Common Mode Electromagnetic Interference Source Characteristics of SiC MOSFETs in Motor Drives 电机驱动中SiC mosfet共模电磁干扰源特性研究
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646091
Yameng Chai, Xiaofeng Ding
{"title":"Common Mode Electromagnetic Interference Source Characteristics of SiC MOSFETs in Motor Drives","authors":"Yameng Chai, Xiaofeng Ding","doi":"10.1109/SCEMS52239.2021.9646091","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646091","url":null,"abstract":"In this paper, common mode electromagnetic interference source characteristics of Silicon Carbide (SiC) MOSFETs in motor drives is analyzed. The source of common mode electromagnetic interference in the motor system is the high $mathrm{d}v/mathrm{d}t$ of the phase voltage caused by the switching of the SiC MOSFET. This paper analyze the current commutation process to learn whether the switching of SiC MOSFETs will cause high $mathrm{d}v/mathrm{d}t$ of the phase voltage is determined by the gate drive signal and the direction of the load current. And then the frequency of common mode electromagnetic interference generation caused by SiC MOSFETs in motor system with SPWM is 6 times of the frequency of carrier wave is learned. Finally, in order to analyze the transient of the common mode electromagnetic interference source, the influence of DC bus parasitic inductance on common mode voltage is analyzed through theoretical analysis and simulations. The results show that the DC bus parasitic inductance will exacerbate common mode electromagnetic interference.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131338858","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
Current-Loop Bandwidth Extension for PMSM Servo System Based on SiC Inverter and FPGA 基于SiC逆变器和FPGA的永磁同步电机伺服系统电流环带宽扩展
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646166
Qiwei Xie, Jianqi Qiu
{"title":"Current-Loop Bandwidth Extension for PMSM Servo System Based on SiC Inverter and FPGA","authors":"Qiwei Xie, Jianqi Qiu","doi":"10.1109/SCEMS52239.2021.9646166","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646166","url":null,"abstract":"The current-loop bandwidth should be extended to improve the dynamic performance of the servo system. Based on the mathematical model, it is proved that the digital system delay is the main limitation factor for the current-loop bandwidth. Using $text{SiC}$ power device, a platform of PMSM servo system is established to improve switching frequency. This paper proposes a piecewise and instant PWM update method based on FPGA, which effectively reduces digital delay. Experiments on different conditions are performed, to verify the feasibility of the method.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116368121","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 Self-excitation Overvoltage of Offshore Interconnected Power System 海上互联电力系统自激过电压研究
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646092
Jiawei Liu, Wei Chen, Xinchao Jiao, T. Zheng
{"title":"Research on Self-excitation Overvoltage of Offshore Interconnected Power System","authors":"Jiawei Liu, Wei Chen, Xinchao Jiao, T. Zheng","doi":"10.1109/SCEMS52239.2021.9646092","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646092","url":null,"abstract":"The self-excitation overvoltage is prone to occur when an offshore interconnected power system implements the black start. This paper gives a mechanism explanation for the self-excitation overvoltage in an offshore power system. The stability analysis of the self-excitation overvoltage for single generator system model is presented with Routh criterion. Besides, a self-excitation overvoltage suppression method is proposed. In order to elaborate the phenomenon of self-excitation overvoltage and validate the performance of the proposed method, an offshore power system model is built using EMTP-RV simulator, which based on the actual data in Jinzhou offshore power system. The simulation results verify that the self-excitation overvoltage is caused by the current positive feedback between the generator reactance and cable capacitor, and the proposed methods can prevent the self-excitation overvoltage effectively.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123126264","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书