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2021 IEEE 4th International Electrical and Energy Conference (CIEEC)最新文献

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Nonlinear Modeling of the Dual Flux Modulator Magnetic-Geared Machine Based on Dual d-q Coordination System 基于双d-q坐标系的双磁通调制器磁齿轮电机非线性建模
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510954
Meng Lu, Yongdan Chen, Xin Zhang, Xiao Liu, Shoudao Huang
{"title":"Nonlinear Modeling of the Dual Flux Modulator Magnetic-Geared Machine Based on Dual d-q Coordination System","authors":"Meng Lu, Yongdan Chen, Xin Zhang, Xiao Liu, Shoudao Huang","doi":"10.1109/CIEEC50170.2021.9510954","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510954","url":null,"abstract":"A nonlinear mathematical model based on variable inductance and dual d-q coordination system of dual flux modulator magnetic-geared machine (DFM-MGM) was proposed in this paper. The closed-loop speed control performance based on the d-q coordinate system is investigated, and id=0 control is employed to analyze the static and dynamic performance of the DFM-MGM. Finally, the correctness of the proposed model is verified by experiment, the proposed model can predict the steady and transient process of DFM-MGM as a magnetic gear and electric machine.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127786965","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
Sensorless Control of Low Speed PMSM Based on Novel Sliding Mode Observer 基于新型滑模观测器的低速永磁同步电机无传感器控制
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510713
Shi Jin, Jiawei Gu, Wuhen Jin, Zhaoyu Zhang, Feng Zhang
{"title":"Sensorless Control of Low Speed PMSM Based on Novel Sliding Mode Observer","authors":"Shi Jin, Jiawei Gu, Wuhen Jin, Zhaoyu Zhang, Feng Zhang","doi":"10.1109/CIEEC50170.2021.9510713","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510713","url":null,"abstract":"This paper presents a novel sliding mode observer (SMO) based on the permanent magnet flux linkage of permanent magnet synchronous motor (PMSM). The stability of the proposed SMO is further proved with the Lyapunov function. As the sliding mode gain required by the proposed SMO to satisfy the stability condition is much smaller than the traditional back-electromotive force based SMO, the proposed SMO effectively weakens chattering and avoids the use of low-pass filter, delivers higher precision of position and speed estimation in low speed. A linear extended state observer (LESO) is incorporated into the quadrature phase locked loop (Q-PLL) to achieve better dynamic performance under large load torque. Finally, the proposed sensorless control strategy is tested in MATLAB/Simulink for its speed tracking capability under low speed. Simulation results validate the feasibility and effectiveness of the proposed sensorless control strategy.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127789428","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
Comparative Study of Homopolar Inductor Machines with Different Rotor Structures for Flywheel Energy Storage System 飞轮储能系统中不同转子结构的同极感应电机的比较研究
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510280
Jiangtao Yang, Qing Li, Chao Guo, Yiyan Tu, Shoudao Huang, C. Ye
{"title":"Comparative Study of Homopolar Inductor Machines with Different Rotor Structures for Flywheel Energy Storage System","authors":"Jiangtao Yang, Qing Li, Chao Guo, Yiyan Tu, Shoudao Huang, C. Ye","doi":"10.1109/CIEEC50170.2021.9510280","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510280","url":null,"abstract":"In recent years, several novel homopolar inductor machine (HIM) topologies, such as rotors with the rectangular, arc-shaped, sinusoidal and triangle rotor slots, are developed. However, the influence of different rotor slots on the performance of HIM is not clear, and there is no basis for selecting rotor slots. Addressing this issue, a comprehensively comparative studies of these topologies with different rotor slot shapes are implemented. Firstly, the topology and operation principle of the HIM are illustrated. Then, the influences of rotor slot shape on the performance including the no-load air gap flux density, back electromotive force, inductance, torque, torque ripple and losses are systematically studied. Moreover, the stress distribution, modal and rotary inertia of rotor with four different rotor slots are analyzed. Based on the above analyses, the HIM with arc-shaped rotor slots is selected and its prototype is developed. Some electromagnetic performance indexes are tested to verify the rationality of analyses. This work clearly points out the advantages and disadvantages of HIMs with different rotor structures, which could be good reference for the selection of rotor slot shape.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126261444","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 Improving the Interoperability of Electric Vehicle Wireless Power Transfer 提高电动汽车无线电力传输互操作性的研究
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/cieec50170.2021.9510840
Zhixin Chen, Lin Sha, Xian Zhang
{"title":"Research on Improving the Interoperability of Electric Vehicle Wireless Power Transfer","authors":"Zhixin Chen, Lin Sha, Xian Zhang","doi":"10.1109/cieec50170.2021.9510840","DOIUrl":"https://doi.org/10.1109/cieec50170.2021.9510840","url":null,"abstract":"Current electric vehicles have problems such as low charging efficiency, low output power, and poor interoperability during the wireless charging process. This is due to differences in the design parameters of different manufacturers or the offset of the coil. This article uses parameters closely related to the nature of the system: normalized angular frequency A, quality factor Q, Qf to simplify the analysis of the LCC-LCC electric vehicle wireless power transfer system, and obtain a simplified mathematical model. Then use the above model to analyze the nature of the system. A method is proposed to improve the interoperability of the system by adjusting the frequency. Finally, the feasibility of the above theory is verified by simulation and experiment. Provide a reference for the research on the interoperability of electric vehicle wireless power transfer.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126380514","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: 3
Conductivity of Bulk Zinc Oxide Varistors under Dc and Pulsed Bias 直流和脉冲偏压下氧化锌压敏电阻的电导率
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510493
Guangyong Xie, Meng-chyi Wu, Songnan Chen
{"title":"Conductivity of Bulk Zinc Oxide Varistors under Dc and Pulsed Bias","authors":"Guangyong Xie, Meng-chyi Wu, Songnan Chen","doi":"10.1109/CIEEC50170.2021.9510493","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510493","url":null,"abstract":"Zinc oxide (ZnO) varistors is widely used in over voltage protection of various circuits for its advantages of excellent nonlinear, fast response time and low power consumption. Commercial ZnO varistors was selected and its dc and pulse conductivity was tested. Based on ZnO grain boundary barrier model, the dc conductivity was analyzed in the Breakdown and Pre-breakdown regions. At the pulsed bias, the capacitive current and conduction current of ZnO varistors was obtained. The growth ratio of conduction current is greater than that of the capacitive current. The tunneling electric field coefficient of ZnO grain boundary barrier, the permittivity of boundary and the proportion of boundary thickness were calculated.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128137993","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
Numerical Study on the Interaction between High-Power Microwave and Plasma 大功率微波与等离子体相互作用的数值研究
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510584
Wei-ting Chen, Cheng Li, An Sun
{"title":"Numerical Study on the Interaction between High-Power Microwave and Plasma","authors":"Wei-ting Chen, Cheng Li, An Sun","doi":"10.1109/CIEEC50170.2021.9510584","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510584","url":null,"abstract":"It is known that plasma can absorb and reflect high- power microwave (HPM) energy through polarization and collision. In this study, influences of microwave frequency, initial electron density and different plasma structures on the protection performance against HPM are numerically investigated. The results show that under the effect of strong electric field of HPM, nonlinear effect in plasma is obvious and the gas breakdown makes the electron density increased, which leads to the attenuation enhancement of HPM and further weakens the energy of wave transmission. It can also be obtained that bi-layer plasma structure has a better attenuation performance than single-layer structure.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127947677","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
Modeling calculation and influence analysis of transformer DC bias current caused by metro stray current 地铁杂散电流对变压器直流偏置电流的建模计算及影响分析
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/cieec50170.2021.9510316
Yanru Ni, Xiangjun Zeng, Kun Yu, Shihang Sun, Chao Zhuo, Ping Peng, Zhonghuan Su
{"title":"Modeling calculation and influence analysis of transformer DC bias current caused by metro stray current","authors":"Yanru Ni, Xiangjun Zeng, Kun Yu, Shihang Sun, Chao Zhuo, Ping Peng, Zhonghuan Su","doi":"10.1109/cieec50170.2021.9510316","DOIUrl":"https://doi.org/10.1109/cieec50170.2021.9510316","url":null,"abstract":"The metro stray current leaked during the metro operation causes the nearby surface potential to change, so that the various grounding transformers at different ground potentials, resulting transformer DC bias. First, the leakage path of the metro stray current and the flow path causing the DC bias of the transformer were analyzed. Based on the stray current flow path, the DC-distribution resistance model of the grounding loop coupled with the field path was established. Combined with the grounding potential distribution, the DC current of the neutral point of the transformer and the grounding tower was calculated. Then the DC distribution model of the grounding loop was used to analyze the influencing factors of the transformer DC bias. Last, the DC distribution caused by metro stray current model was verified by the simulation results. The numerical calculation of transformer DC bias current and grounding tower current was realized in this paper, which has certain guiding significance for the evaluation and suppression of transformer DC bias.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115871339","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
Simulation analysis of fuel economy of a fuel cell/battery passive hybrid power system for commercial vehicles 商用车燃料电池/蓄电池被动混合动力系统燃油经济性仿真分析
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510209
Ling Xu, Zunyan Hu, Liangfei Xu, Jianqiu Li, M. Ouyang
{"title":"Simulation analysis of fuel economy of a fuel cell/battery passive hybrid power system for commercial vehicles","authors":"Ling Xu, Zunyan Hu, Liangfei Xu, Jianqiu Li, M. Ouyang","doi":"10.1109/CIEEC50170.2021.9510209","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510209","url":null,"abstract":"Fuel cell/battery passive hybrid power systems have the potential of saving energy due to the avoidance of DC/DC power loss. However, their energy-saving effect has not been investigated in previous research. This paper studies the fuel economy of a fuel cell/battery passive hybrid system for commercial vehicles through simulation. The energy consumption of the passive hybrid configuration is compared to that of a conventional active configuration under high-speed static conditions. The results show that the passive configuration can save energy by 3%-12% under the selected condition and energy management strategy (EMS). The energy-saving percentage increases as the efficiency of the fuel cell engine increases. When the initial SOC is lower than the sustaining target of the EMS, the energy-saving effect becomes more significant. This study confirms the energy-saving effect of the fuel cell passive hybrid system.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"18 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113939236","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
Daily Dispatching Optimization Model of Virtual Power Plant with Integrated Energy Buildings 综合能源建筑虚拟电厂日调度优化模型
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510891
X. Deng, Ting Ye, Pu Wang
{"title":"Daily Dispatching Optimization Model of Virtual Power Plant with Integrated Energy Buildings","authors":"X. Deng, Ting Ye, Pu Wang","doi":"10.1109/CIEEC50170.2021.9510891","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510891","url":null,"abstract":"In order to make rational use of resources to improve the terminal energy utilization rate and improve the reliability of day ahead optimization, this paper studies the optimal dispatching potential of virtual power plant with integrated energy buildings considering the uncertain factors such as load forecasting error. Taking into consideration the system security constraints, the day ahead optimal scheduling model of the virtual power plant with comprehensive energy buildings is established to minimize the economic costs including operation and depreciation costs and is solved combining the strategy of dynamically adjusting inertia weights based on S- curve with particle swarm optimization and differential hybrid algorithm. We then analyze the simulation results of buildingtype virtual power plant in summer and winter scenarios, which verify the effectiveness of the improved algorithm.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131947532","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
Control Strategy of Suppressing Electromechanical Torsional Vibration of Large-power AC Drive System 抑制大功率交流传动系统机电扭振的控制策略
2021 IEEE 4th International Electrical and Energy Conference (CIEEC) Pub Date : 2021-05-28 DOI: 10.1109/CIEEC50170.2021.9510568
Jin Wang, Dapeng Zheng, Hailong Li, Chunyi Zhu, Chongjian Li
{"title":"Control Strategy of Suppressing Electromechanical Torsional Vibration of Large-power AC Drive System","authors":"Jin Wang, Dapeng Zheng, Hailong Li, Chunyi Zhu, Chongjian Li","doi":"10.1109/CIEEC50170.2021.9510568","DOIUrl":"https://doi.org/10.1109/CIEEC50170.2021.9510568","url":null,"abstract":"A method based on virtual inertia for suppressing electromechanical torsional vibration of a large-power AC drive system is presented in this paper. The main drive system of the rolling mill is the research object, and a two-inertia elastic model is established to study the mechanism of electromechanical torsional vibration. The improvement is made based on the control of the load observer. The virtual inertia control method combines the advantages of the positive and negative feedback control of the load observer, can achieve the purpose of controlling the moment of inertia of the motor from the perspective of electrical control, and effectively suppress oscillation.","PeriodicalId":110429,"journal":{"name":"2021 IEEE 4th International Electrical and Energy Conference (CIEEC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132327250","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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