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

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Research on Predictive Current Suspension Control of Permanent Magnet Bearingless Motor 永磁无轴承电机预测电流悬浮控制研究
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646139
Yang Zhao, C. Ye, Yongzihao Dai, K. Liu, Sifeng Zhao, Cong Deng
{"title":"Research on Predictive Current Suspension Control of Permanent Magnet Bearingless Motor","authors":"Yang Zhao, C. Ye, Yongzihao Dai, K. Liu, Sifeng Zhao, Cong Deng","doi":"10.1109/SCEMS52239.2021.9646139","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646139","url":null,"abstract":"This paper develops a suspension predictive control method for bearingless motor. Predictive control is used to replace traditional PI control for bearingless motor suspension. This paper first deduces the mathematical model of the predictive current suspension controller, and then the system simulation is carried out. The simulation results show that the proposed scheme can make the rotor levitation more quickly and stably, and has better dynamic index, and realizes the decoupling of motor suspension control and torque control.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"5 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":"114956443","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 Capacitance Matrix Expansion Method for Parasitic Capacitance Extraction of Excitation Winding 激励绕组寄生电容提取的电容矩阵展开法
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646146
Chen Zezhong, Jiang Renhua, Zhu Shushu, H. Yaohua
{"title":"A Capacitance Matrix Expansion Method for Parasitic Capacitance Extraction of Excitation Winding","authors":"Chen Zezhong, Jiang Renhua, Zhu Shushu, H. Yaohua","doi":"10.1109/SCEMS52239.2021.9646146","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646146","url":null,"abstract":"The excitation voltage regulator is connected to the excitation winding of the generator to regulate the output power of the generator. The excitation winding is multicircuit winding with multi layers and multi turns. The parasitic capacitance is significant, and it leads to some problems, such as current overshooting and switching losses of the excitation voltage regulator. Therefore, the extraction of the parasitic capacitance of the excitation winding is necessary. A capacitance matrix expansion method is proposed in this paper. The matrix of the parasitic capacitance of the excitation winding is obtained. Due to the symmetric arrangement of the excitation winding, the capacitance matrix can be divided into many parts. The capacitance values of each part approach to a constant which is called the typical capacitance value. The full capacitance matrix is deduced according to the typical capacitance values. After the full capacitance matrix being transformed and simplified, the lumped parasitic capacitance of the excitation winding can be extracted. This method can both take the most advantage of the flexibility of FEA and avoid the unaffordable hardware requirement when extracting the parasitic capacitance of the multicircuit windings. The simulations and experiments are performed for the validation of this method.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"93 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":"116128779","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
Sensitivity Analysis and Multi-Objective Optimization of a PM-Assisted Synchronous Reluctance Motor with Rectangular Flux-Barriers 矩形磁阻永磁辅助同步磁阻电机灵敏度分析及多目标优化
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646098
Yuhang Cheng, Yawei Wang, Dawei Li, R. Qu
{"title":"Sensitivity Analysis and Multi-Objective Optimization of a PM-Assisted Synchronous Reluctance Motor with Rectangular Flux-Barriers","authors":"Yuhang Cheng, Yawei Wang, Dawei Li, R. Qu","doi":"10.1109/SCEMS52239.2021.9646098","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646098","url":null,"abstract":"In this paper, the permanent magnet (PM) assisted synchronous reluctance (PMAREL) motor with rectangular flux-barriers is studied. Three parametric modeling methods are proposed and compared from the model perspective. Based on the open-source finite element software FEMM, the parametric model of the PMAREL motor is modeled and post-processed through Matlab code. On this basis, a comprehensive sensitivity analysis is carried out according to an initial design. In addition, the developed three parametric modeling methods are also compared by using differential evolution (DE) algorithm to indicate the machine performance difference. The optimization objectives are the average torque and torque ripple. For lowing the torque ripple further, a multi-level optimization is carried out. From the torque ripple point of view, the result of multi-level optimization is way better than global optimization. The effect of inhibition to torque ripple is significant, which can generally be reduced to about 10%. This paper will show the process of the modeling and some useful suggestions can be concluded through multi-objective optimization.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"125 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":"121487848","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
Design of Consequent Pole Permanent Magnet Vernier Motor for Downhole Electric Drilling System 井下电钻系统顺极永磁游标电机设计
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646138
Zheng Chen, Jin Wang, Z. Hu, Jianqiu Xiao, Libing Zhou, Hu Wang
{"title":"Design of Consequent Pole Permanent Magnet Vernier Motor for Downhole Electric Drilling System","authors":"Zheng Chen, Jin Wang, Z. Hu, Jianqiu Xiao, Libing Zhou, Hu Wang","doi":"10.1109/SCEMS52239.2021.9646138","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646138","url":null,"abstract":"The downhole electric drilling tool can realize the high-efficiency and low-cost development of oil and gas resources in deep wells. As its core component, the downhole motor needs to have high torque density and high reliability. Permanent magnet vernier motor (PMVM) has simple structure and high torque density, but the traditional surface mounted permanent magnet vernier motor (SPMVM) has low power factor and poor reliability of structure. This paper proposes a consequent pole permanent magnet vernier motor (CPMVM) as the motor of downhole electric drilling system. The results show that the proposed CPMVM can improve the power factor and structural reliability.","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":"131214324","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
The Structure of Symmetrical Stator Core Offset to Reduce Cogging Torque 对称定子铁心偏置结构减小齿槽转矩
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646111
T. Zhou, Li Zhu
{"title":"The Structure of Symmetrical Stator Core Offset to Reduce Cogging Torque","authors":"T. Zhou, Li Zhu","doi":"10.1109/SCEMS52239.2021.9646111","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646111","url":null,"abstract":"In the axial flux permanent magnet synchronous motor, the interaction of the permanent magnet magnetic field and the stator slot cause cogging torque, which will affect speed ripple and operation noise. To effectively reduce the cogging torque, this paper proposes a new structure of stator, adding specific rotation angle of the symmetric stator core, namely the symmetrical stator core offset. The rationality of the structure is verified by mathematical derivation and finite element simulation with the dual-rotor and dual-stator axial flux permanent magnet synchronous motor.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"34 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":"124212437","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
Mechanical properties of transformer insulations under DC bias condition 直流偏置条件下变压器绝缘的力学性能
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646105
Jing Wu, Jie Xu, Weiyan Zheng, M. Jin, XueQian Huang, Guoping Zou
{"title":"Mechanical properties of transformer insulations under DC bias condition","authors":"Jing Wu, Jie Xu, Weiyan Zheng, M. Jin, XueQian Huang, Guoping Zou","doi":"10.1109/SCEMS52239.2021.9646105","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646105","url":null,"abstract":"In a traditional vibration model of transformer windings, the insulations are regarded as a linear spring. However, the windings are subjected to dynamic electromagnetic forces during operations. The electromagnetic force has a low frequency component of 50 Hz under the condition of DC bias. In this study, the dynamic mechanical properties of the insulations are extracted from the collected stress and strain data, and a Bouc-wen model is selected to fit the sequential data. In the experiment, a new platform was designed to acquire the stress and strain of the insulations under sinusoidal forces at different frequencies. It is proved that the stiffness and damping are the function of the clamping force. The mechanical parameters of the insulations under normal conditions are different from those under DC bias.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"53 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":"128422539","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
Thermal Analysis of a Hybride Excitation Flux-Switching Motor with Water-Cooling System 带水冷系统的混合励磁开关电机的热分析
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646159
Shunjie Ni, Lihua Zhou, Hao Li, R. Cao
{"title":"Thermal Analysis of a Hybride Excitation Flux-Switching Motor with Water-Cooling System","authors":"Shunjie Ni, Lihua Zhou, Hao Li, R. Cao","doi":"10.1109/SCEMS52239.2021.9646159","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646159","url":null,"abstract":"In this paper, to verify the heat dissipation reliability of a new hybrid excitation flux-switching (HEFS) motor, finite element is used to develop a thermal simulation method of electromagnetic-fluid-thermal coupling. First, general methods of motor temperature analysis and topology of new HEFS motor are introduced. Then, based on motor efficiency map, the maximum loss working status of HEFS motor is analysed to calculate the motor loss, which mainly includes copper loss, iron loss and eddy current loss of permanent magnet. Meanwhile, airflow field and water flow field are analysed respectively to calculate the convective heat transfer coefficient of water-cooling motor. With motor loss and convective heat transfer coefficient, the temperature of motor components at rated condition, maximum loss and maximum effciency are checked to ensure the safety of motor operation, which is also significant to further improve motor performance.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"89 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":"127718069","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 Fuzzy plus Integral Composite Control Strategy of Switched Reluctance Motor for Electric Vehicles 电动汽车开关磁阻电机的模糊加积分复合控制策略
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646083
Fan Liu, Y. Zhu, Peilin Liu, Chuang Liu, Yujie Qian
{"title":"A Fuzzy plus Integral Composite Control Strategy of Switched Reluctance Motor for Electric Vehicles","authors":"Fan Liu, Y. Zhu, Peilin Liu, Chuang Liu, Yujie Qian","doi":"10.1109/SCEMS52239.2021.9646083","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646083","url":null,"abstract":"Switched reluctance motor (SRM) has been widely developed in the field of new energy vehicles and home electrical appliances due to its advantages of simple structure, high fault tolerance, high reliability, good suitableness for harsh working conditions, and flexible control. This paper takes the switched reluctance motor used in electric vehicles as the research object. The simulation model of the system is established combined with the characteristics of the switched reluctance motor and the mechanical motion equation. Aiming at the problem that fuzzy control is easy to produce steady state error, a speed regulator of switched reluctance motor is designed based on fuzzy + integral control strategy. It is verified that the system has better dynamic response and steady-state performance after using the fuzzy + integral composite control strategy. Finally, a four-phase 16/12 switched reluctance motor used for EV is tested. The results show that the combined control strategy can effectively adjust the speed and torque of the motor, which verifies that the motor system has high robustness under different working conditions.","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":"123854066","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
Coupled Thermo-Mechanical Stress Analysis of Insulation in Deep-Sea Oil-Filled Motors 深海充油马达绝缘热-机耦合应力分析
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646133
Rui Wang, L. Cai, Jian Zhang, Xiaoyan Huang, Youtong Fang
{"title":"Coupled Thermo-Mechanical Stress Analysis of Insulation in Deep-Sea Oil-Filled Motors","authors":"Rui Wang, L. Cai, Jian Zhang, Xiaoyan Huang, Youtong Fang","doi":"10.1109/SCEMS52239.2021.9646133","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646133","url":null,"abstract":"Compared with normal electrical machines, deep-sea oil-filled (DSOF) motors operate in high pressure environment, which will lead to a great change of coupled thermo-mechanical stress (TMS) distribution and further influence insulation lifetime. This paper proposes an analytical model for TMS analysis of stator insulation in DSOF motors considering the impact of high pressure in deep sea environment. The finite element analysis models for motor temperature distribution and TMS analysis were established and the accuracy of the proposed analytical model was demonstrated. And it can be concluded that comparing with the motors working in normal environment, the TMS on insulation of DSOF motors is greatly reduced.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"80 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":"117090212","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 a Novel Stator Water-cooling System for Yokeless and Segmented Armature Axial Flux Machine 一种新型无轭分段电枢轴向磁通机定子水冷却系统的设计
2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS) Pub Date : 2021-12-01 DOI: 10.1109/SCEMS52239.2021.9646096
Wei Le, M. Lin, Lun Jia, Shuai Wang
{"title":"Design of a Novel Stator Water-cooling System for Yokeless and Segmented Armature Axial Flux Machine","authors":"Wei Le, M. Lin, Lun Jia, Shuai Wang","doi":"10.1109/SCEMS52239.2021.9646096","DOIUrl":"https://doi.org/10.1109/SCEMS52239.2021.9646096","url":null,"abstract":"This paper deals with the stator cooling structure of yokeless and segmented armature (YASA) axial flux machine. An innovative direct water-cooling system is presented to enhance the heat transfer performance of the YASA stator. Three types of water channel structures are compared to verify their thermal performance by computational fluid dynamics (CFD) simulation. The results show that the proposed stator cooling system can improve the temperature of the stator significantly, and the water channel Structure C of three structures can achieve the best cooling performance.","PeriodicalId":327731,"journal":{"name":"2021 IEEE 4th Student Conference on Electric Machines and Systems (SCEMS)","volume":"173 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":"114453197","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: 5
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