IEEE Transactions on Applied Superconductivity最新文献

{"title":"Heterogeneous Gene Sequence Alignment System Based on 12-GHz Superconducting Chip","authors":"Chenbo Yuan;Peiyao Qu;Lingyun Li;Huanli Liu;Tianhang Liang;ZheLong Jiang;Gang Chen;Guangming Tang","doi":"10.1109/TASC.2024.3461236","DOIUrl":"10.1109/TASC.2024.3461236","url":null,"abstract":"Due to power consumption and speed limitations, the development of CMOS-based large-scale integrated circuits has stagnated in the post-Moore era. While superconducting digital integrated circuit is a promising solution due to its low power consumption and latency. However, the lack of large-scale cryogenic storage units prevents most superconducting chips from being deployed in practical applications. To fully utilize the advantages of superconducting chips and successfully apply them in processing large datasets, we propose a novel heterogeneous processor based on CMOS-based circuits and superconducting chips for processing pattern-matching tasks. In our proposed architecture, a novel communication architecture that enables high-speed, reliable communication between 12 GHz superconducting chips and CMOS circuits is proposed. The hardware overhead for high-speed communication in superconducting chips can be minimized by this approach. In addition, the data communication rate of a single channel can reach 12 Gbps. Simultaneously, we present a 12 GHz, large-scale superconducting chip with 6286 Josephson Junctions that can perform 16-bit pattern matching using the SIMIT-Nb03 process. We have successfully applied our proposed heterogeneous processor to the gene sequence alignment. The processor that uses only one superconducting chip has a throughput of 1.5 Gbp/s (billion base pairs per second), whereas a processor with two superconducting chips has 3 Gbp/s.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 9","pages":"1-7"},"PeriodicalIF":1.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252646","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}

{"title":"Design and Research of a High-Temperature Superconducting Flywheel Energy Storage System With Zero-Flux Coils","authors":"Deming Huang;Chaoqun Jiao;Jin Fang","doi":"10.1109/TASC.2024.3460760","DOIUrl":"https://doi.org/10.1109/TASC.2024.3460760","url":null,"abstract":"A novel energy storage flywheel system is proposed, which utilizes high-temperature superconducting (HTS) electromagnets and zero-flux coils. The electrodynamic suspension (EDS) devices, consisting of HTS and zero-flux coils, are employed to provide suspension and guidance forces for the system. In addition, an auxiliary bearing is incorporated to offer support during low speeds or when the system is not in operation. This article discusses the dynamics and electromagnetic characteristics of this innovative energy storage flywheel system.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 9","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431893","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}

{"title":"Design of Quench Detection System for Background DC Magnet in the Conductor Performance Research Platform of CRAFT","authors":"Jilin Zhang;Yanlan Hu;Qicai Ni;Yezheng Xiao;Longgui Zheng;Hui Lu;Qing Yan;Huaichao Liu","doi":"10.1109/TASC.2024.3462411","DOIUrl":"10.1109/TASC.2024.3462411","url":null,"abstract":"The conductor performance research platform is part of the Comprehensive Research Facility for Fusion Technology project presently under construction in China, and the background dc magnet system is used to generate a back field of up to 15 T. Its superconducting magnet system is designed with three different cable-in-conduit conductor structures, which are divided into the high-field coil (16 T), the medium-field coil (14 T), and the low-field coil (11 T), of which the high-field/midfield coil is a high-performance Nb\u0000₃\u0000Sn superconducting material, and the low-field coil is an international thermonuclear experimental reactor Nb\u0000₃\u0000Sn superconducting magnet. The original quench detection system featured a multimodular design for easy maintenance and back-end signal acquisition; however, analog signals were susceptible to interference during long-distance transmission. To optimize the quench detection system and ensure the safe operation of superconducting magnets, a reliable and fast-response quench detection system is essential during plant operation. This article provides a comprehensive introduction to the quench detection techniques applied to the different magnet systems. By analyzing the system's quench behavior, a multisystem complementary detection technique is proposed, which can enhance the reliability of quench detection.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 9","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252644","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}

{"title":"A Hall-Based Modified Finite Position Set-Phase Locked Loop for PMSM Control System in EVs","authors":"Anchen Yang;Mingyao Lin;Lun Jia;Keman Lin","doi":"10.1109/TASC.2024.3456565","DOIUrl":"https://doi.org/10.1109/TASC.2024.3456565","url":null,"abstract":"This manuscript introduces a hall-based modified finite position set-phase locked loop (HM-FPS-PLL) method designed for the control system of permanent magnet synchronous motors (PMSMs) in electric vehicles (EVs). The innovative aspect of the presented method lies in utilizing hall sensors pre-installed within the motor and a permanent magnet (PM) flux observer, simultaneously increasing the precision of calculation while reducing computational load. In contrast to traditional sensorless methods employing PLL, this method eliminates the dependency on the PI controller. Both simulations and experimental validations have been conducted to confirm the precision and feasibility of the HM-FPS-PLL method.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142246412","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}

{"title":"Effect of LN2 Sloshing on the Lateral Dynamic of HTS Pinning Maglev","authors":"Xiaofan Liang;Xucheng Zhou;Yan Li;Yihao Chen;Yin Ding;Yuchen He;Li Wang;Zigang Deng","doi":"10.1109/TASC.2024.3459627","DOIUrl":"10.1109/TASC.2024.3459627","url":null,"abstract":"As an innovative maglev system, the high-temperature superconducting (HTS) pinning magnetic levitation (maglev) train achieves levitation and guidance through the interaction between the HTS bulks in the levitator and the permanent magnet guideway. To ensure that the HTS pinning maglev maintains a stable levitation working state, the ambient temperature of the HTS bulk must remain below its critical temperature. The current method is injecting liquid nitrogen (LN\u0000₂\u0000) into the levitator's liquid tank for cooling. However, due to heat transfer, LN\u0000₂\u0000 in the tank is not always fully replenished. External disturbances can cause LN\u0000₂\u0000 sloshing, which affects the vehicle's dynamic performance. This issue remains underexplored by scholars. In this article, LN\u0000₂\u0000 excitation is integrated into studying the dynamic performance of HTS pinning maglev for the first time. First, a spring–mass model is established to deal with the LN\u0000₂\u0000 sloshing in the levitator equivalently. Computational fluid dynamics software verifies the feasibility of this model. The equivalent model is then integrated into the vehicle system to develop an HTS pinning vehicle dynamics model, which is validated by experimental data. Subsequently, the dynamic response of the vehicle and the levitators considering the LN\u0000₂\u0000 sloshing is analyzed. Finally, the optimal LN\u0000₂\u0000 filling ratio in the levitator is proposed from the perspective of dynamic performance optimization. The results show that the LN\u0000₂\u0000 sloshing in the levitator has a particular influence on the lateral vibration, lateral displacement, and roll angle of the HTS pinning maglev vehicle. In addition, it is recommended to replenish LN\u0000₂\u0000 when the filling ratio inside the levitator reaches 70%. This work enhances the understanding of the dynamic response of HTS pinning maglev trains under multiple excitations and provides a reference for refining HTS pinning maglev modeling.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 9","pages":"1-9"},"PeriodicalIF":1.7,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178999","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}

{"title":"Modeling HTS Coils With Different Coupling Scenarios via Integral Method","authors":"Calvin C. T. Chow;Min Zhang;K. T. Chau;Francesco Grilli","doi":"10.1109/TASC.2024.3450991","DOIUrl":"10.1109/TASC.2024.3450991","url":null,"abstract":"High-temperature superconducting tapes can be stacked together to form cables which are then wound into coils for potential use in electrical machines. The tapes in the cable can either be uncoupled (insulated from each other), coupled at ends (coupled at the terminals of the cable), or fully coupled (electrically connected with each other along the whole length of the cable). The integral method can readily model the uncoupled scenario, and this article extends the integral method to model the coupled-at-ends and fully coupled scenarios. We find that the proposed method has a time advantage over the well-established \u0000<italic>T–A</i>\u0000 formulation of Maxwell's equations.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 9","pages":"1-9"},"PeriodicalIF":1.7,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178932","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}

{"title":"Identification Winding Material of Distribution Transformer Based on Multi-Information Fusion","authors":"Hu Xiong;Jiayuan Li;Xianming Xie;Bin Xiang;Xiaoguang Jiang;Changchen Zhu;Zhixiong Liu","doi":"10.1109/TASC.2024.3456559","DOIUrl":"10.1109/TASC.2024.3456559","url":null,"abstract":"In transformer production, some manufacturers use aluminum to impersonate copper to reduce the manufacturing cost, which is difficult to be detected and can cause significant losses to the power grid. To address the problem of non-destructive identification of winding material in distribution transformers, we propose a multi- information recognition method by fusing the harmonic resistance coefficient and the appearance parameters of the transformer, namely volume and height. Then the winding material is identified by a trained support vector machine model. The test results demonstrate that our proposed method achieves 90% recognition accuracy for copper transformers and 100% accuracy for aluminum transformers with the test samples. Additionally, the proposed non-destructive method is easier to implement than other methods in engineering.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178933","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}

{"title":"Optimal Impedance Reshaping Approach for Inhibiting Subsynchronous Oscillation in Virtual Synchronous Generator Based on SMES-Battery","authors":"Lei Chen;Xiaoyan You;Zhenqiang Li;Huiwen He;Man Yang;Shencong Zheng;Jingguang Tang;Hongkun Chen","doi":"10.1109/TASC.2024.3456578","DOIUrl":"10.1109/TASC.2024.3456578","url":null,"abstract":"Regarding a hybrid energy storage system (ESS) with superconducting magnetic energy storage (SMES) and battery, it can adopt the virtual synchronous generator (VSG) control to fulfill the grid-forming capability while doing more active voltage/frequency support. This article proposes an optimal impedance reshaping approach to inhibit the subsynchronous oscillation in the VSG based on the SMES-battery. Firstly, the theoretical modeling of the VSG as well as the SMES-battery is conducted. Then, the VSG's sequence impedance characteristic is investigated, and the subsynchronous oscillation influence is analyzed. By introducing an impedance reshaping link and revealing its effects on the VSG's low-frequency impedance, an optimized objective function with a minimum impedance phase difference is designed, and the improved particle swarm optimization is adopted for obtaining the solution. Using the MATLAB platform, a detailed simulation model is created, and different algorithms are considered to check the performance of the optimal impedance reshaping approach. Combining the time-domain simulation waveforms and frequency responses, the proposed method enables to effectively ameliorate the impedance features of the VSG, and inhibit the low-frequency oscillation while alleviating the power and current transients.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178938","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}

{"title":"Vibration Contribution Analysis of Radial and Tangential Electromagnetic Force Harmonic of Permanent Magnet Synchronous Motor","authors":"Jibin Zou;Mingchuan Liu;Yongxiang Xu;Guodong Yu;Hua Lan","doi":"10.1109/TASC.2024.3456484","DOIUrl":"10.1109/TASC.2024.3456484","url":null,"abstract":"This paper analyzes the vibration contribution of radial and tangential electromagnetic force harmonic of permanent magnet synchronous motor. Firstly, infer the analytical expressions of the air gap magnetic field generated by permanent magnet and armature reaction. Then, the radial and tangential electromagnetic force density produced by different sources are obtained with Maxwell stress theory. After that, the modal shapes and frequencies of the prototype are studied by means of finite element analysis and experimental modal testing. At last, the vibration contribution of radial and tangential electromagnetic force harmonic of the prototype is analyzed quantitatively by harmonic response simulation and experiment. The research demonstrates that in the motor design stage, if the vibration performance is the primary characteristic to be concerned, the contribution of the tangential force needs to be taken seriously.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142179051","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}

{"title":"Study of Resistive SFCL for Stability Increase of BTB-VSC-HVDC System Based on Virtual Synchronous Generator Control Strategy","authors":"Lei Chen;Shencong Zheng;Xiaoyan You;Jiahui Zhu;Yifei Li;Jingguang Tang;Yuqi Jiang;Hongkun Chen","doi":"10.1109/TASC.2024.3456486","DOIUrl":"10.1109/TASC.2024.3456486","url":null,"abstract":"For a back-to-back voltage-source-converter HVDC (BTB-VSC-HVDC) system using virtual synchronous generator (VSG) control, it enables more adaptable voltage and frequency support for the main network. In this article, the investigation of the resistive superconducting fault current limiter (R-SFCL) for increasing the BTB-VSC-HVDC's stability under faults is carried out. Firstly, the topological structure and control scheme of the BTB-VSC-HVDC are expatiated. Then, the influence mechanism of cooperating with the R-SFCL and the VSG controller on the power angle stability (PAS) is explored from an energy balance perspective, where the R-SFCL's effects on boosting the VSC's low-voltage ride-through (LVRT) functionality are considered. In light of the MATLAB platform, a detailed digital model of ±420 kV BTB-VSC-HVDC incorporating R-SFCL is created, and the approach validation of coordinating the R-SFCL as well as the VSG controller to address different fault scenarios is implemented. The simulation findings confirm the R-SFCL's efficacy in dissipating the imbalanced power in the BTB-VSC-HVDC and lifting the LVRT behaviors of the VSC. As the efficient coordination of the R-SFCL and the VSG controller in moderate and serious faults, not only the AC voltage drop is ameliorated, but also the PAS of the demonstrated system is visibly increased.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-7"},"PeriodicalIF":1.7,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178937","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}