Pub Date : 2024-09-26DOI: 10.1109/TASC.2024.3469851
Yannan Dong;Lei Gao;Shaohua Ma;Xin Yao;Xiangjun Li
Hydrogen energy storage is a key technology to achieve energy transformation. Energy efficiency is an important factor affecting the application of power to hydrogen (P2H) in power systems. The power quality of the rectifier and the operating temperature affect the energy efficiency of the electrolytic cells. This paper reveals the combine impact of the power quality and operating temperature on the energy efficiency of proton exchange membrane electrolytic cells (PEMEC). Firstly, the P2H PEMEC test platform is built, the model of PEMEC is established base on the test data. Secondly, with the different rectifies, the harmonic distribution and the ripple factors on the energy efficiency of the PEMEC are studied. Finally, compared the energy efficiency of the 6-pulse rectifier, double star rectifier and the current source type rectifier at different operating temperature. The results shows that the better power quality and higher operating temperature positively affects the energy efficiency of the PEMEC.
{"title":"Combine Impact of Power Quality and Operating Temperature on Energy Efficiency of Proton Exchange Membrane Electrolytic Cells","authors":"Yannan Dong;Lei Gao;Shaohua Ma;Xin Yao;Xiangjun Li","doi":"10.1109/TASC.2024.3469851","DOIUrl":"https://doi.org/10.1109/TASC.2024.3469851","url":null,"abstract":"Hydrogen energy storage is a key technology to achieve energy transformation. Energy efficiency is an important factor affecting the application of power to hydrogen (P2H) in power systems. The power quality of the rectifier and the operating temperature affect the energy efficiency of the electrolytic cells. This paper reveals the combine impact of the power quality and operating temperature on the energy efficiency of proton exchange membrane electrolytic cells (PEMEC). Firstly, the P2H PEMEC test platform is built, the model of PEMEC is established base on the test data. Secondly, with the different rectifies, the harmonic distribution and the ripple factors on the energy efficiency of the PEMEC are studied. Finally, compared the energy efficiency of the 6-pulse rectifier, double star rectifier and the current source type rectifier at different operating temperature. The results shows that the better power quality and higher operating temperature positively affects the energy efficiency of the PEMEC.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Superconducting fault current limiters (SFCLs) are a novel type of electrical equipment designed for the protection of high-voltage (10 kV and higher) power grids. At present, around 20 SFCLs are installed worldwide. All these SFCLs have custom design and are specifically tailored to installation site specifics. This may limit widespread application of this technology since each new SFCL installation requires different design and—as a result—multiple approvals from numerous parties (utilities, government, etc.), which is a labor-intensive and time-consuming process. To reduce the efforts required for equipment approval, electrical industry developed an extensive system of standards, and thus, it is necessary to explore the possibility to create an SFCL, which complies with the existing standards. This article examines the existing regulations for the closest to SFCL equipment, i.e., current-limiting reactors, deduces the possibility of applying these regulations to the existing SFCLs, provides requirements that SFCLs are yet to satisfy, and, finally, estimates the basic technical specifications of SFCL that should comply with all the requirements studied.
{"title":"Application of Electrical Industry Standards to Superconducting Fault Current Limiters","authors":"Daria Kolomentseva;Eldar Magommedov;Mikhail Moyzykh","doi":"10.1109/TASC.2024.3469532","DOIUrl":"https://doi.org/10.1109/TASC.2024.3469532","url":null,"abstract":"Superconducting fault current limiters (SFCLs) are a novel type of electrical equipment designed for the protection of high-voltage (10 kV and higher) power grids. At present, around 20 SFCLs are installed worldwide. All these SFCLs have custom design and are specifically tailored to installation site specifics. This may limit widespread application of this technology since each new SFCL installation requires different design and—as a result—multiple approvals from numerous parties (utilities, government, etc.), which is a labor-intensive and time-consuming process. To reduce the efforts required for equipment approval, electrical industry developed an extensive system of standards, and thus, it is necessary to explore the possibility to create an SFCL, which complies with the existing standards. This article examines the existing regulations for the closest to SFCL equipment, i.e., current-limiting reactors, deduces the possibility of applying these regulations to the existing SFCLs, provides requirements that SFCLs are yet to satisfy, and, finally, estimates the basic technical specifications of SFCL that should comply with all the requirements studied.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 9","pages":"1-8"},"PeriodicalIF":1.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-25DOI: 10.1109/TASC.2024.3468071
Kaikai Guo;Chen Liu;Youguang Guo;Cong Li
In order to improve the torque density of doubly salient permanent magnet (PM) machine (DSPMM), two different DSPMMs (topologies I and II) with NdFeB PM materials embedded in the stator yoke are presented, and the working magnetic circuits of both topologies contain the main magnetic circuit and auxiliary magnetic circuit through the magnetic barrier beside the PMs, which can improve the air gap flux density and the torque density effectively. The optimization designs of two DSPMMs are analyzed by establishing the equivalent magnetic circuit (EMC) models at no load and load conditions. Another two traditional DSPMMs (topologies III and IV) are taken as the comparison objects, and the best optimal structure parameters of the four topologies are decided by genetic algorithm. A prototype of topology II is manufactured, and the electromagnetic performances of the four DSPMMs are revealed. It is observed that the electromagnetic performances of topology II analyzed by EMC method are in agreement with the results analyzed by finite element method and test results, and the torque of topology II is larger by 148.1%, 27.72% and 245.5% than that of topology I, III and IV, respectively.
为了提高双突出永磁电机（DSPMM）的转矩密度，本文提出了两种不同的 DSPMM（拓扑结构 I 和 II），在定子磁轭中嵌入了钕铁硼永磁材料，两种拓扑结构的工作磁路均包含主磁路和通过永磁材料旁的磁屏障形成的辅助磁路，可有效提高气隙磁通密度和转矩密度。通过建立空载和负载条件下的等效磁路（EMC）模型，分析了两种 DSPMM 的优化设计。以另两种传统 DSPMM（拓扑 III 和 IV）为比较对象，通过遗传算法确定四种拓扑的最佳结构参数。制造了拓扑结构 II 的原型，并揭示了四种 DSPMM 的电磁性能。结果表明，用电磁兼容方法分析拓扑 II 的电磁性能与用有限元方法分析的结果和测试结果一致，拓扑 II 的扭矩分别比拓扑 I、III 和 IV 大 148.1%、27.72% 和 245.5%。
{"title":"Design and Analysis of Two Doubly Salient Permanent Magnet Machines","authors":"Kaikai Guo;Chen Liu;Youguang Guo;Cong Li","doi":"10.1109/TASC.2024.3468071","DOIUrl":"https://doi.org/10.1109/TASC.2024.3468071","url":null,"abstract":"In order to improve the torque density of doubly salient permanent magnet (PM) machine (DSPMM), two different DSPMMs (topologies I and II) with NdFeB PM materials embedded in the stator yoke are presented, and the working magnetic circuits of both topologies contain the main magnetic circuit and auxiliary magnetic circuit through the magnetic barrier beside the PMs, which can improve the air gap flux density and the torque density effectively. The optimization designs of two DSPMMs are analyzed by establishing the equivalent magnetic circuit (EMC) models at no load and load conditions. Another two traditional DSPMMs (topologies III and IV) are taken as the comparison objects, and the best optimal structure parameters of the four topologies are decided by genetic algorithm. A prototype of topology II is manufactured, and the electromagnetic performances of the four DSPMMs are revealed. It is observed that the electromagnetic performances of topology II analyzed by EMC method are in agreement with the results analyzed by finite element method and test results, and the torque of topology II is larger by 148.1%, 27.72% and 245.5% than that of topology I, III and IV, respectively.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-25DOI: 10.1109/TASC.2024.3468074
Y. Yoldas;A. Onen;K. Alawasa;A. El Haffar;R. Ahshan;Md. R. Islam;S.M. Muyeen;N. Noorfatima;J. Jung
The effective operation of a microgrid (MG) depends on seamless coordination among agents in energy management systems. A pivotal element in this coordination is the multi-agent coordinator, strategically positioned as an intermediate controller between the primary and tertiary control levels. Its role is to derive optimal setpoints from data obtained at the tertiary control level and convey them to the relevant agents at the primary control level. This study presents a novel optimization model for the multi-agent energy management system, aimed at enhancing real-time economic dispatch in the secondary control by managing active and reactive power. Instead of relying on a conventional centralized MG controller, the proposed framework employs multi-agent coordination to improve the reliability, stability, and economic performance of MG operations.
{"title":"A Framework-Based Multi-Agent Coordination for Enhanced Microgrid Energy Management at the Secondary Control Layer","authors":"Y. Yoldas;A. Onen;K. Alawasa;A. El Haffar;R. Ahshan;Md. R. Islam;S.M. Muyeen;N. Noorfatima;J. Jung","doi":"10.1109/TASC.2024.3468074","DOIUrl":"https://doi.org/10.1109/TASC.2024.3468074","url":null,"abstract":"The effective operation of a microgrid (MG) depends on seamless coordination among agents in energy management systems. A pivotal element in this coordination is the multi-agent coordinator, strategically positioned as an intermediate controller between the primary and tertiary control levels. Its role is to derive optimal setpoints from data obtained at the tertiary control level and convey them to the relevant agents at the primary control level. This study presents a novel optimization model for the multi-agent energy management system, aimed at enhancing real-time economic dispatch in the secondary control by managing active and reactive power. Instead of relying on a conventional centralized MG controller, the proposed framework employs multi-agent coordination to improve the reliability, stability, and economic performance of MG operations.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-25DOI: 10.1109/TASC.2024.3468072
Chong Zhang;Yu Zhou;Dongsheng Yu
Dual active bridge (DAB) converters have been applied to many industrial power supply fields. Input parallel output series (IPOS) DAB converters are capable of broadening the output voltage range and output power level, of which the output voltage balancing control is essentially required. In this article, based on the generalized power model and characteristics of cooperative triple phase shift (CTPS), a self-adapting voltage balancing method is proposed for IPOS DAB converters to strike a balance between wide output voltage and small transient oscillation. Moreover, by employing the proposed method, IPOS DAB converter is able to achieve quasi no reverse power of dual sides by using single current control loop, which helps in reducing the complexity of control loop design and lowing the computation burden. Experiment of the proposed method is carried out to validate the feasibility of the proposed method.
双有源桥（DAB）转换器已被应用于许多工业电源领域。输入并联输出串联（IPOS）DAB 转换器能够拓宽输出电压范围和输出功率水平，而这本质上需要对输出电压进行平衡控制。本文基于广义功率模型和协同三相移相（CTPS）特性，提出了一种 IPOS DAB 转换器的自适应电压平衡方法，以实现宽输出电压和小瞬态振荡之间的平衡。此外，通过采用所提出的方法，IPOS DAB 转换器能够通过使用单电流控制环实现双侧准无反向功率，这有助于降低控制环设计的复杂性并减轻计算负担。对所提方法进行了实验，以验证所提方法的可行性。
{"title":"Self-Adapting Voltage Balancing Method for IPOS DAB Converter With TPS Control","authors":"Chong Zhang;Yu Zhou;Dongsheng Yu","doi":"10.1109/TASC.2024.3468072","DOIUrl":"https://doi.org/10.1109/TASC.2024.3468072","url":null,"abstract":"Dual active bridge (DAB) converters have been applied to many industrial power supply fields. Input parallel output series (IPOS) DAB converters are capable of broadening the output voltage range and output power level, of which the output voltage balancing control is essentially required. In this article, based on the generalized power model and characteristics of cooperative triple phase shift (CTPS), a self-adapting voltage balancing method is proposed for IPOS DAB converters to strike a balance between wide output voltage and small transient oscillation. Moreover, by employing the proposed method, IPOS DAB converter is able to achieve quasi no reverse power of dual sides by using single current control loop, which helps in reducing the complexity of control loop design and lowing the computation burden. Experiment of the proposed method is carried out to validate the feasibility of the proposed method.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A dynamic hysteresis model based on the loss separation theory is proposed to simulate and predict the total loss of grain-oriented (GO) silicon steels under high-frequency excitation with DC-bias. The skin depth is included in the equations of the classical eddy current field intensity considering the inhomogeneous distribution of the magnetic field under high frequency excitations. Besides, the DC-component of the excitation is also considered in the derived classical eddy current field equation. The nonlinear property of magnetic materials is accounted by discussing the saturated and the unsaturated operating conditions separately. The measurement results of a typical GO silicon steel are applied for the validation of the proposed dynamic hysteresis model. The accuracy and the loss component of the simulation and the loss prediction of silicon steels under DC-biased excitations are analyzed in detail.
提出了一种基于损耗分离理论的动态磁滞模型，用于模拟和预测直流偏压高频激励下晶粒取向（GO）硅钢的总损耗。考虑到高频激励下磁场的不均匀分布，在经典涡流场强度方程中加入了集肤深度。此外，在推导的经典涡流场方程中还考虑了激励的直流分量。通过分别讨论饱和和不饱和工作条件，考虑了磁性材料的非线性特性。典型 GO 硅钢的测量结果用于验证所提出的动态磁滞模型。详细分析了模拟的准确性和损耗分量，以及直流偏置激励下硅钢的损耗预测。
{"title":"Dynamic Hysteresis Model and Loss Prediction of GO Silicon Steel Under DC-Biased High-Frequency Excitation","authors":"Shengze Gao;Xiaojun Zhao;Haoming Wang;Lanrong Liu;Xuanyuan Zhang","doi":"10.1109/TASC.2024.3468214","DOIUrl":"https://doi.org/10.1109/TASC.2024.3468214","url":null,"abstract":"A dynamic hysteresis model based on the loss separation theory is proposed to simulate and predict the total loss of grain-oriented (GO) silicon steels under high-frequency excitation with DC-bias. The skin depth is included in the equations of the classical eddy current field intensity considering the inhomogeneous distribution of the magnetic field under high frequency excitations. Besides, the DC-component of the excitation is also considered in the derived classical eddy current field equation. The nonlinear property of magnetic materials is accounted by discussing the saturated and the unsaturated operating conditions separately. The measurement results of a typical GO silicon steel are applied for the validation of the proposed dynamic hysteresis model. The accuracy and the loss component of the simulation and the loss prediction of silicon steels under DC-biased excitations are analyzed in detail.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-25DOI: 10.1109/TASC.2024.3468189
Jin Shang;Huaqiang Zhang;Tong Yao;Mei Zhao;Dajian Cheng
Disk motors characterized by a flat structure and high power density are suitable for use in shaftless rim thrusters. This study proposes a novel stator coreless disk motor with skewed wave winding, which is intended for use in shaftless rim thrusters of small underwater robots. It analyzes the generation mechanism of back electromotive force (EMF) and electromagnetic force for the skewed wave winding and designs three disk motors with different pole numbers (12 poles, 16 poles, and 24 poles) by varying the winding skewed angle. A positive correlation between motor efficiency and the number of poles is demonstrated through a finite element simulation on disk motors with different pole numbers. Finally, a prototype of the 16-pole motor is fabricated and tested to validate the effectiveness of the previous motor design.
{"title":"A Novel Stator Coreless Disk Motor With Skewed Wave Winding for Shaftless Rim Thruster","authors":"Jin Shang;Huaqiang Zhang;Tong Yao;Mei Zhao;Dajian Cheng","doi":"10.1109/TASC.2024.3468189","DOIUrl":"https://doi.org/10.1109/TASC.2024.3468189","url":null,"abstract":"Disk motors characterized by a flat structure and high power density are suitable for use in shaftless rim thrusters. This study proposes a novel stator coreless disk motor with skewed wave winding, which is intended for use in shaftless rim thrusters of small underwater robots. It analyzes the generation mechanism of back electromotive force (EMF) and electromagnetic force for the skewed wave winding and designs three disk motors with different pole numbers (12 poles, 16 poles, and 24 poles) by varying the winding skewed angle. A positive correlation between motor efficiency and the number of poles is demonstrated through a finite element simulation on disk motors with different pole numbers. Finally, a prototype of the 16-pole motor is fabricated and tested to validate the effectiveness of the previous motor design.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-25DOI: 10.1109/TASC.2024.3468073
Ziyi Xu;Yongming Xu;Yanbo Wang;Yaodong Wang
This paper presents a proposal for the implementation of an axial air deflector in order to enhance the cooling capabilities of an axially forced air-cooled motor. The prediction of global fluid-thermal characteristics is carried out using the numerical analysis method. The obtained calculations are validated using experiments, with a relative error of 4.4% observed between the simulated and measured values. The present study focuses on investigating the cooling enhancement mechanism of the axial air deflector through numerical analysis and subsequently validating its effectiveness in enhancing cooling. Furthermore, an analysis was conducted to examine the correlation between the geometric parameters of the axial air deflector and its ability to enhance cooling. Upon the installation of the axial air deflector, notable enhancements are observed in the fluid flow condition within the end space. Consequently, the stator winding experiences a reduction in both the maximum temperature rise and average temperature rise, amounting to 2.5 K and 1.7 K, respectively.
本文提出了一种实施轴向空气导流板的建议，以增强轴向强制风冷电机的冷却能力。本文采用数值分析方法对全局流体-热特性进行了预测。实验验证了计算结果，发现模拟值和测量值之间的相对误差为 4.4%。本研究的重点是通过数值分析研究轴向空气导流板的冷却增强机制，并随后验证其在增强冷却方面的有效性。此外，还分析了轴向空气导流板的几何参数与其增强冷却能力之间的相关性。安装轴向空气导流板后，端部空间内的流体流动状况明显改善。因此，定子绕组的最大温升和平均温升分别降低了 2.5 K 和 1.7 K。
{"title":"Cooling Enhancement of an Axially Forced Air-Cooled Motors Using Axial Air Deflector","authors":"Ziyi Xu;Yongming Xu;Yanbo Wang;Yaodong Wang","doi":"10.1109/TASC.2024.3468073","DOIUrl":"https://doi.org/10.1109/TASC.2024.3468073","url":null,"abstract":"This paper presents a proposal for the implementation of an axial air deflector in order to enhance the cooling capabilities of an axially forced air-cooled motor. The prediction of global fluid-thermal characteristics is carried out using the numerical analysis method. The obtained calculations are validated using experiments, with a relative error of 4.4% observed between the simulated and measured values. The present study focuses on investigating the cooling enhancement mechanism of the axial air deflector through numerical analysis and subsequently validating its effectiveness in enhancing cooling. Furthermore, an analysis was conducted to examine the correlation between the geometric parameters of the axial air deflector and its ability to enhance cooling. Upon the installation of the axial air deflector, notable enhancements are observed in the fluid flow condition within the end space. Consequently, the stator winding experiences a reduction in both the maximum temperature rise and average temperature rise, amounting to 2.5 K and 1.7 K, respectively.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-25DOI: 10.1109/TASC.2024.3468070
Naifeng Zhang;Kaikai Guo;Youguang Guo
A non-singular fast terminal sliding mode control (SMC) strategy with a new piecewise reaching law (PRL) of permanent magnet synchronous motor is presented to reduce the steady-state buffeting in this paper. A speed adaptive regulator is designed to make the motor work stably at the lowest speed value under the limitation of the DC bus voltage condition when the motor starts non-normally or with locked rotor, and a disturbance observation is introduced to further improve the anti-interference ability of the control system. The experiment test is carried out. Compared with the experimental results of traditional SMC, the buffeting suppression of the control system using non-singular fast terminal SMC with PRL is reduced by 66.7%, 57.9% and 60% at 20 rpm, 30 rpm and 40 rpm under no-load condition, respectively. The buffeting suppression and the dynamic stability time of the proposed method are reduced by 52.3% and 53.3% under load condition, respectively.
{"title":"Research on Low Speed Operation of PMSM Based on Improved Non-Singular Fast Terminal SMC","authors":"Naifeng Zhang;Kaikai Guo;Youguang Guo","doi":"10.1109/TASC.2024.3468070","DOIUrl":"https://doi.org/10.1109/TASC.2024.3468070","url":null,"abstract":"A non-singular fast terminal sliding mode control (SMC) strategy with a new piecewise reaching law (PRL) of permanent magnet synchronous motor is presented to reduce the steady-state buffeting in this paper. A speed adaptive regulator is designed to make the motor work stably at the lowest speed value under the limitation of the DC bus voltage condition when the motor starts non-normally or with locked rotor, and a disturbance observation is introduced to further improve the anti-interference ability of the control system. The experiment test is carried out. Compared with the experimental results of traditional SMC, the buffeting suppression of the control system using non-singular fast terminal SMC with PRL is reduced by 66.7%, 57.9% and 60% at 20 rpm, 30 rpm and 40 rpm under no-load condition, respectively. The buffeting suppression and the dynamic stability time of the proposed method are reduced by 52.3% and 53.3% under load condition, respectively.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-24DOI: 10.1109/TASC.2024.3467155
Jing Sun;Zhihong Liu;Wenge Chen;Jiefeng Wu;Zhaohui Yan;Xin Luo;Xiaosong Fan
A Bi-2212 cable-in-conduit conductor is manufactured by winding, heat treating, and insulating the superconducting conductors. To verify the performance of alumina-silicate fiber used as insulating fiber in the Bi-2212 cable-in-conduit conductor, mock-ups of 5 × 5 array with alumina-silicate fiber and glass fiber were manufactured. They have undergone ac and dc tests at room temperature, Paschen test, thermal cycling, and electrical breakdown test. The results indicate that the mock-ups with the alumina-silicate fiber tape have similar performance with the mock-up of the glass fiber tape. The performance of the mock-ups confirms the feasibility of using alumina-silicate fiber tapes for the Bi-2212 cable-in-conduit conductor that are made by wind and react, laying the foundation for their subsequent applications.
{"title":"Electrical Performance of the Insulation Mock-Ups for the Bi-2212 Cable-in-Conduit Conductor","authors":"Jing Sun;Zhihong Liu;Wenge Chen;Jiefeng Wu;Zhaohui Yan;Xin Luo;Xiaosong Fan","doi":"10.1109/TASC.2024.3467155","DOIUrl":"https://doi.org/10.1109/TASC.2024.3467155","url":null,"abstract":"A Bi-2212 cable-in-conduit conductor is manufactured by winding, heat treating, and insulating the superconducting conductors. To verify the performance of alumina-silicate fiber used as insulating fiber in the Bi-2212 cable-in-conduit conductor, mock-ups of 5 × 5 array with alumina-silicate fiber and glass fiber were manufactured. They have undergone ac and dc tests at room temperature, Paschen test, thermal cycling, and electrical breakdown test. The results indicate that the mock-ups with the alumina-silicate fiber tape have similar performance with the mock-up of the glass fiber tape. The performance of the mock-ups confirms the feasibility of using alumina-silicate fiber tapes for the Bi-2212 cable-in-conduit conductor that are made by wind and react, laying the foundation for their subsequent applications.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 9","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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