IEEE Transactions on Plasma Science最新文献_第10页

Consistency Analysis of Postarc Sheath Evolution in Self-Voltage Sharing Interrupters for Multibreak Vacuum Circuit Breakers 多断路真空断路器自分压断路后护套演变的一致性分析

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-10 DOI: 10.1109/TPS.2025.3602512

Hui Chen;Xian Cheng;Guowei Ge;Shuai Du;Qinwei Zhang;Wanlong Zhang;Shuo Chen;Chenxi Wang

{"title":"Consistency Analysis of Postarc Sheath Evolution in Self-Voltage Sharing Interrupters for Multibreak Vacuum Circuit Breakers","authors":"Hui Chen;Xian Cheng;Guowei Ge;Shuai Du;Qinwei Zhang;Wanlong Zhang;Shuo Chen;Chenxi Wang","doi":"10.1109/TPS.2025.3602512","DOIUrl":"https://doi.org/10.1109/TPS.2025.3602512","url":null,"abstract":"Self-voltage sharing capacitor pattern (SSCP) could meet the compact uniform voltage distribution demand of tank multibreak vacuum circuit breakers (VCBs). However, the consistency analysis of postarc sheath evolution in series-connected breaks with grading capacitors has drawn little attention in previous studies. This article focused on the dynamic development of postarc currents in series-connected vacuum interrupters (VIs) with various grading capacitor patterns. The concept of series-connected sheath consistency was introduced to quantitatively characterize the postarc sheath enhancement effect in series-connected VIs with SSCP, and the particle-in-cell (PIC) computational model was established. Furthermore, the influence of series-connected breaks, shield potential, and contact distance on postarc sheath evolution was investigated, which indicated that SSCP could affect the evolution process of postarc currents, sheath potential, and sheath thickness. Compared to conventional grading capacitor patterns (CGCPs), the postarc current peak was reduced by 20%. The maximum value of the consistency coefficient of SSCP is 0.20 (the ideal value is 0) in series-connected breaks. This article could be used for the evaluation of postarc sheath evolution consistency of series-connected SSCP, which promotes the advancement of ultrahigh-voltage multibreak tank VCBs.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"203-218"},"PeriodicalIF":1.5,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

A Novel Elliptical Coreless Winding Topology for Enhanced Electromagnetic Performance 一种增强电磁性能的新型椭圆无芯绕组拓扑

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-09 DOI: 10.1109/TPS.2025.3637112

Xinghe Fu;Jingqi Bu

{"title":"A Novel Elliptical Coreless Winding Topology for Enhanced Electromagnetic Performance","authors":"Xinghe Fu;Jingqi Bu","doi":"10.1109/TPS.2025.3637112","DOIUrl":"https://doi.org/10.1109/TPS.2025.3637112","url":null,"abstract":"Coreless winding topologies are a pivotal design element in a diverse range of electromagnetic devices, from high-precision actuators to high-energy pulsed-power systems. These configurations are essential for achieving high power density and rapid dynamic response, with conventional topologies including rectangular, skewed, diamond, and hexagonal. To further reduce material consumption, improve magnetic flux utilization, and enhance electromagnetic performance, this article proposes a novel elliptical winding topology, with a focus on its implementation in coreless brushed permanent magnet dc motors (CBPMDCMs). The structural design of the motor and elliptical winding is first introduced. Detailed analytical models for back EMF, electromagnetic, and mechanical characteristics are then developed and validated through 3-D finite element analysis (3-D FEA). A comparative study is subsequently conducted between the elliptical winding and conventional windings under identical performance requirements. The results demonstrate that the elliptical winding achieves higher flux utilization, lower copper consumption, improved efficiency, and stronger short-term overload capability, while maintaining competitive electromagnetic and mechanical performance.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"306-313"},"PeriodicalIF":1.5,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Effect of Pin-to-Pin Gliding Arc Plasma on NOx Suppression in Premixed Ammonia/Oxygen Combustion 针对针滑动电弧等离子体对氨/氧预混燃烧中NOx抑制的影响

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-09 DOI: 10.1109/TPS.2025.3638163

Qin-Kun Yu;Yu-Long Niu;Shou-Zhe Li;Xiaoqiong Wen;Yong Li;Daoman Han;Cheng Zhou

{"title":"Effect of Pin-to-Pin Gliding Arc Plasma on NOx Suppression in Premixed Ammonia/Oxygen Combustion","authors":"Qin-Kun Yu;Yu-Long Niu;Shou-Zhe Li;Xiaoqiong Wen;Yong Li;Daoman Han;Cheng Zhou","doi":"10.1109/TPS.2025.3638163","DOIUrl":"https://doi.org/10.1109/TPS.2025.3638163","url":null,"abstract":"In this work, the effect of an ac-driven pin-to-pin gliding arc discharge (GAD) on premixed NH3/O2 combustion is experimentally investigated. The discharge substantially improves flame stability and extends the lean flammability limit from <inline-formula> <tex-math>$varphi =0.55$ </tex-math></inline-formula> to 0.30. Meanwhile, an approximately 80% reduction in NO emissions is achieved under plasma-assisted conditions. With increasing oxygen flow rate, the discharge undergoes a transition from glow to spark types, which promotes the ignition of lean mixtures. Optical emission spectroscopy (OES) identifies the presence of OH<inline-formula> <tex-math>${}^{ast }$ </tex-math></inline-formula>, NH<inline-formula> <tex-math>${}^{ast }$ </tex-math></inline-formula>, and N<inline-formula> <tex-math>${}_{2}^{ast } $ </tex-math></inline-formula> species only when plasma participates in burning, while the intensity of NH<inline-formula> <tex-math>${}_{2}^{ast } $ </tex-math></inline-formula> emission is markedly increased. As the equivalence ratio increases, OH<inline-formula> <tex-math>${}^{ast }$ </tex-math></inline-formula> emission decreases, whereas NH<inline-formula> <tex-math>${}^{ast }$ </tex-math></inline-formula>, NH<inline-formula> <tex-math>${}_{2}^{ast } $ </tex-math></inline-formula>, and N<inline-formula> <tex-math>${}_{2}^{ast } $ </tex-math></inline-formula> emissions are strengthened, implying enhanced NH3 dissociation induced by the plasma. Based on these results, we propose a set of DeNO<italic>x reaction pathways involving plasma-generated NH<italic>x radicals.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"261-269"},"PeriodicalIF":1.5,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Benchmark of the Beam Optics Simulation Against the Beam Acceleration Experiments of a Dual-Driver Radio Frequency Negative Ion Source for Fusion 双驱动射频负离子源核聚变束流加速实验的光束光学模拟基准

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-09 DOI: 10.1109/TPS.2025.3638740

Jiahao Cheng;Yuwen Yang;Qinglong Cui;Zhengkun Cao;Yao Qin;Yongjian Xu;Lizhen Liang;Jianglong Wei

{"title":"Benchmark of the Beam Optics Simulation Against the Beam Acceleration Experiments of a Dual-Driver Radio Frequency Negative Ion Source for Fusion","authors":"Jiahao Cheng;Yuwen Yang;Qinglong Cui;Zhengkun Cao;Yao Qin;Yongjian Xu;Lizhen Liang;Jianglong Wei","doi":"10.1109/TPS.2025.3638740","DOIUrl":"https://doi.org/10.1109/TPS.2025.3638740","url":null,"abstract":"Neutral beam injection (NBI) is a key auxiliary heating technology used in magnetic confinement fusion devices. With the scale up of the device, the requirement of beam energy is higher. A negative ion source-based neutral beam injection (NNBI) system is an inevitable choice, but the NNBI system presents significant engineering complexity and technical challenges. To investigate and master core NNBI technologies, an NNBI test facility is currently being developed under the Comprehensive Research Facility for Fusion Technology (CRAFT) in China. The initial operational targets for the CRAFT NNBI system are to achieve a beam with energies in the range of 200400 keV, the neutral beam power of 2 MW, and the pulse duration of 100 s. In the negative ion source, the beam divergence is one of the important parameters that determines the pulse duration and energy of the beam. A large beam divergence will cause heavy thermal load on the electrode grids and additional heat load on the beamline components. These can cause the breakdown of grids and interrupt the acceleration process. The accelerator beam optics design for the CRAFT NNBI dual-driver negative ion source is based on IBSimu. Two diagnostic methods, beam emission spectroscopy (BES) and secondary electron emission (SEE), are adopted to analyze the optical characteristics of beam in the experiments. The experimental results verify the simulation results calculated by IBSimu, confirming the limitations and reliability of the simulation program.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"290-296"},"PeriodicalIF":1.5,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Mathematical Modeling and Electromagnetic Force Analysis of Novel Tubular Linear Rotary Switched Reluctance Machine 新型管状直线旋转开关磁阻电机的数学建模与电磁力分析

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-08 DOI: 10.1109/TPS.2025.3573417

Hao Chen;Cheng Liu;Xing Wang;Nikolay Korovkin;Sakhno Liudmila;Popov Stanislav Olegovich;Bodrenkov Evgenii Alexandrovich

{"title":"Mathematical Modeling and Electromagnetic Force Analysis of Novel Tubular Linear Rotary Switched Reluctance Machine","authors":"Hao Chen;Cheng Liu;Xing Wang;Nikolay Korovkin;Sakhno Liudmila;Popov Stanislav Olegovich;Bodrenkov Evgenii Alexandrovich","doi":"10.1109/TPS.2025.3573417","DOIUrl":"https://doi.org/10.1109/TPS.2025.3573417","url":null,"abstract":"In this article, the mathematical modeling and electromagnetic characteristic analysis are carried out for a novel tubular linear rotary switched reluctance machine (TLRSRM). First, the topology and operation principle of TLRSRM are described, and the magnetic equivalent circuit (MEC) model of the machine in aligned and unaligned positions is established. Then, the analytical calculation of the air-gap permeance is performed by the magnetic field division method for the two critical positions of the rotary part and the linear part, respectively. Three-dimensional finite element simulation based on inductive characteristics verifies the feasibility and effectiveness of the MEC method. In order to further research the electromagnetic characteristics of the motor in unsaturated and saturated states, the approximate mathematical analytical formulas of the air-gap magnetic density and normal force are derived for the two critical positions of the TLRSRM proposed in this article, and the comparisons of the 3-D finite-element method (3D FEM) and mathematical analytical calculations of the air-gap magnetic density and normal force under different excitation currents are given. The comparison results further verify the accuracy of the mathematical model calculation in this article. This provides theoretical guidance for the electromagnetic design and vibration noise control of TLRSRM.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"270-278"},"PeriodicalIF":1.5,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

A Strongly Discontinuous Boundary Condition Model With Discontinuous Galerkin Framework for Multiscale Electromagnetic Simulations Containing Imperfect Sliding Electrical Contact 含不完全滑动电接触多尺度电磁仿真的不连续Galerkin框架强不连续边界条件模型

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-08 DOI: 10.1109/TPS.2025.3635917

Shuqi Liu;Jinghan Yang;Junbin Zhao;Lixue Chen;Dezhi Chen

{"title":"A Strongly Discontinuous Boundary Condition Model With Discontinuous Galerkin Framework for Multiscale Electromagnetic Simulations Containing Imperfect Sliding Electrical Contact","authors":"Shuqi Liu;Jinghan Yang;Junbin Zhao;Lixue Chen;Dezhi Chen","doi":"10.1109/TPS.2025.3635917","DOIUrl":"https://doi.org/10.1109/TPS.2025.3635917","url":null,"abstract":"Imperfect electrical contact between two rough conductors is often involved in electromagnetic field analysis, where the contact zone is a very thin domain with complex geometry and is physically modeled as contact resistance. In electromagnetic simulations, contact resistance is usually characterized by a constant-thickness contact layer with the corresponding conductivity. However, since the thickness of the contact layer (tens of micrometers) is much smaller than the sizes of the armature and rail (tens of millimeters), this spatial multiscale phenomenon requires an extremely large number of meshes, making simulations too costly. In this article, the imperfect sliding electrical contact between the rail and armature in railguns is taken as the subject. A boundary condition model is presented, where the contact layer is replaced as a zero-thickness interface with strongly discontinuous interface conditions connecting the surroundings. This model avoids meshing the thin layer and reflects changes in contact pressure and liquid aluminum material in interface conditions. In addition, a general discontinuous Galerkin (DG) framework ensuring the interfacial strong discontinuity is introduced by defining numerical fluxes that follow the discontinuity. This method is precise and guarantees good condition numbers, even in extreme cases of very large or small contact conductivities. To verify the correctness and effectiveness, current density results were calculated using the boundary condition model and the classical contact layer model (CLM) and were found to be consistent; the element number and computation time of the boundary condition model are less than those of the classical model. Furthermore, the effects of imperfect electrical contact on electromagnetic fields were analyzed using the abovementioned methods at velocities of 0, 100, 500, and 1000 m/s.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"314-326"},"PeriodicalIF":1.5,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Research on Multiphysics Coupling Characteristics in Transient Electromagnetic Emission Process Based on ALE Moving Mesh Technology 基于ALE移动网格技术的瞬变电磁发射过程多物理场耦合特性研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-04 DOI: 10.1109/TPS.2025.3636500

Linbo Yan;Xinbo He;Bing Wei;Qian Yang;Linqian Li

{"title":"Research on Multiphysics Coupling Characteristics in Transient Electromagnetic Emission Process Based on ALE Moving Mesh Technology","authors":"Linbo Yan;Xinbo He;Bing Wei;Qian Yang;Linqian Li","doi":"10.1109/TPS.2025.3636500","DOIUrl":"https://doi.org/10.1109/TPS.2025.3636500","url":null,"abstract":"Accurately and efficiently solving the physical characteristics of electromagnetic railguns is essential for understanding their dynamic behavior and ensuring reliable design. However, an effective real-time solution for the multiphysics coupling characteristics of electromagnetic railguns has yet to be proposed. This article develops a modified set of governing equations for electromagneticthermal coupling based on the arbitrary LagrangianEulerian (ALE) dynamic mesh framework and applies them to the transient electromagnetic launch process. Additionally, a hybrid meshing strategy combining sliding and dynamic meshes is introduced, where sliding meshes are utilized for the armature region and the rail sections in contact with the armature, while dynamic meshes are applied to the remaining rail sections. This approach effectively balances computational accuracy and complexity, enabling precise real-time solutions for the multiphysics characteristics of transient and high-speed models. To validate the proposed method, numerical results from static meshes, single-physics simulations, and the modified multiphysics coupling solution are compared with experimental data. The results demonstrate the effectiveness and efficiency of the proposed approach in achieving accurate and real-time multiphysics simulations of electromagnetic railgun launches.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"297-305"},"PeriodicalIF":1.5,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Waves Excitation in a Waveguide Filled With Inhomogeneous Magnetized Movable Plasma 非均匀磁化可动等离子体填充波导中的波激发

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-02 DOI: 10.1109/TPS.2025.3627878

Khaled Hamed El-Shorbagy;A. M. Gouda

引用次数: 0

The Frozen Deuterium Fiber Revisited on the Z-Pinch Initiation Facility (ZIF) 在z箍缩引发装置（ZIF）上重新研究冷冻氘纤维

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-12-02 DOI: 10.1109/TPS.2025.3635030

J. D. Sethian;B. Adolf;N. Chaturvedi;J. Chittenden;G. V. Dowhan;M. Forkin;J. L. Giuliani;F. Hegeler;R. Jensen;B. Piercy;A. E. Robson

{"title":"The Frozen Deuterium Fiber Revisited on the Z-Pinch Initiation Facility (ZIF)","authors":"J. D. Sethian;B. Adolf;N. Chaturvedi;J. Chittenden;G. V. Dowhan;M. Forkin;J. L. Giuliani;F. Hegeler;R. Jensen;B. Piercy;A. E. Robson","doi":"10.1109/TPS.2025.3635030","DOIUrl":"https://doi.org/10.1109/TPS.2025.3635030","url":null,"abstract":"The Z-Pinch Initiation Facility (ZIF) was built to investigate the effect of initial conditions (e.g., rate of voltage rise) on the stability of a dense Z-pinch formed from a frozen deuterium fiber. The motivation was work initially performed in 1987 by the Naval Research Laboratory (NRL) and Los Alamos National Laboratory (LANL) that reported stability far longer than predicted by magnetohydrodynamic (MHD) theory. NRL observed stability as long as the current was rising, up to 640 kA and 130 ns. ZIF can drive up to 250 kA in 80 ns through a single 34-cm-long fiber. In some cases, apparent stability was observed based on visible light streak camera photographs and neutron detectors, which replicated the NRL results. However, in all cases on ZIF, the more extensive diagnostics revealed turbulent <inline-formula> <tex-math>$m =0$ </tex-math></inline-formula> behavior that dominated the pinch dynamics. Visible light framing images showed short wavelength <inline-formula> <tex-math>$m =0$ </tex-math></inline-formula> activity (ka~20) as early as 30 ns after start of the current. Laser shadowgraphy also showed <inline-formula> <tex-math>$m =0$ </tex-math></inline-formula> activity. These are consistent with 2-D and 3-D simulations of the experiments. The 2.45-MeV neutrons are produced during the current rise and as much as 120–230 ns after current peak. There are still unresolved differences between the ZIF and previous results, which may be due to differences in the Z-pinch current driver. This is one of four papers on ZIF. Others discuss the ZIF pulsed power, the ZIF diagnostic suite, and simulations. An archive of all results will be made available to the public in 2026.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 1","pages":"279-289"},"PeriodicalIF":1.5,"publicationDate":"2025-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11273098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel Spoof Surface Plasmon Polaritons Unit With Dual-Band Negative Group Delay 一种具有双带负群延迟的新型欺骗表面等离子激元单元

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2025-11-26 DOI: 10.1109/TPS.2025.3635647

Guodong Lu;Yiqin Liu;Weiwen Li

引用次数: 0