2017 IEEE 21st International Conference on Pulsed Power (PPC)最新文献_第10页

The study of three-dimensional compression of wire arrays at the angara-5-1 facility angara-5-1设施线阵三维压缩研究

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291101

A. Gritsuk, V. Aleksandrov, I. Frolov, E. Grabovskiy, A. Gribov, Y. Lauhin, K. Mitrofanov, G. Oleinik, A. Samohin, A. Shishlov

{"title":"The study of three-dimensional compression of wire arrays at the angara-5-1 facility","authors":"A. Gritsuk, V. Aleksandrov, I. Frolov, E. Grabovskiy, A. Gribov, Y. Lauhin, K. Mitrofanov, G. Oleinik, A. Samohin, A. Shishlov","doi":"10.1109/PPC.2017.8291101","DOIUrl":"https://doi.org/10.1109/PPC.2017.8291101","url":null,"abstract":"Implosion of quasi-spherical wire arrays opens the possibility of more efficient use of the kinetic energy of the material being compressed to create a source of soft X-rays (SXR), compared to two-dimensional compression in the case of a cylindrical wire array. This is due to the contribution of the kinetic energy of the axial movement of the plasma into the internal energy of SXR source. The purpose of the experiments was to achieve threedimensional synchronous compression of the plasma in the geometric center of a quasi-spherical array. For the optimal linear mass profile (ml(θ) = mfsinθ), it follows from the measured distribution of the azimuthal magnetic field that, in the stage of plasma production up to the SXR pulse, the plasma with the frozen-in magnetic field penetrates the array from the polar and equatorial regions almost synchronously. The size and shape of the X-ray radiation source in quasi-spherical current implosion were inferred from plasma emission spectrum measurement with spatial resolution and registration of framing X-ray images. Estimation of the radiation flux on the surface of such a source was received.","PeriodicalId":247019,"journal":{"name":"2017 IEEE 21st International Conference on Pulsed Power (PPC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127882430","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

The improvement of energy efficiency by generating hydroxyl radical on the surface of droplets for the water treatment using pulsed power discharge 利用脉冲功率放电在水滴表面产生羟基自由基以提高能量效率

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291228

Yoshihiro Sato, Keita Watanabe, Y. Minamitani

{"title":"The improvement of energy efficiency by generating hydroxyl radical on the surface of droplets for the water treatment using pulsed power discharge","authors":"Yoshihiro Sato, Keita Watanabe, Y. Minamitani","doi":"10.1109/PPC.2017.8291228","DOIUrl":"https://doi.org/10.1109/PPC.2017.8291228","url":null,"abstract":"Pulsed power discharge in water is studied for advanced water treatment technology. The pulsed power generates streamer like discharge in water. The streamer discharge generates many active species (ozone, OH radical, ultraviolet rays etc.). All of them could be utilized to the decomposition of organic substances in water. However, to generate uniform streamer discharge is difficult in water because breakdown voltage in water is high. This phenomenon decreases efficiency of the water treatment. Therefore we are studying the water treatment method that contaminated water is sprayed as droplets from the top into the reactor that generates pulsed plasma in gaseous phase. The feature of our system is that contaminated water is sprayed as droplets from the top into the reactor that generates pulsed plasma in gaseous phase. Contaminated water reacts with active species in the streamer discharge directly. Hence this method has so much high efficiency for the water treatment. However, since OH radical that has short lifetime is generated near the streamer, some OH radicals would react before the reaction to the droplets. In this study, we designed a new reactor that the pulsed discharge occurs on the surface of the water droplets. By this design, it has been observed to improve the energy efficiency for water treatment. In other words, it is possible to decompose the organic substances in water with less energy and to come faster treatment.","PeriodicalId":247019,"journal":{"name":"2017 IEEE 21st International Conference on Pulsed Power (PPC)","volume":"31 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120933304","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

Effects of pulsed voltage rise rate on pulsed streamer discharge 脉冲电压上升速率对脉冲流光放电的影响

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291296

R. Fujita, Y. Nagata, D. Wang, T. Namihira

{"title":"Effects of pulsed voltage rise rate on pulsed streamer discharge","authors":"R. Fujita, Y. Nagata, D. Wang, T. Namihira","doi":"10.1109/PPC.2017.8291296","DOIUrl":"https://doi.org/10.1109/PPC.2017.8291296","url":null,"abstract":"Pulsed streamer discharge plasma, a type of non-thermal plasma, is known to generate various chemically active species and as such is applied to many fields such as water quality improvement and ozone generation. However, detailed physical properties of streamer discharge remain unclear. Therefore, basic research on pulsed streamer discharge is necessary. Previous studies have shown that voltage rise rates greatly influence streamer discharge, but few reports have focused on this. While peak voltage tends to vary under the influence of voltage rise rates, research to date has generally utilized an unfixed peak voltage. This study investigates discharge propagation phenomena at a fixed peak voltage under various voltage rise rates using an ICCD camera. In the experiment, a pulsed voltage with a duration of 100 ns was created using Blumlein lines and applied to a needle-hemisphere electrode. The applied peak voltage was about 71 kV with the electrode gap set at 24 mm as measured from the top of the needle to hemisphere surface. A decrease in the number of winding coils from 5 to 0 resulted in a pulsed voltage rise rate increased from 0.61 to 1.21 kV/ns. Important results are as follows. (1) The ending time of streamer head propagation was delayed, and the voltage at that time increased from 53.1 to 61.0 kV. (2) Streamer head velocity on average increased from 0.45 to 0.58 mm/ns. (3) Brightness value increase at the end of streamer head propagation. Our experimental results elucidate the relationship of pulsed voltage rise rate to various streamer discharge parameters. We conclude that pulsed voltage rise rate has a great influence on the physical characteristics of streamer discharge.","PeriodicalId":247019,"journal":{"name":"2017 IEEE 21st International Conference on Pulsed Power (PPC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115609195","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

Impedance matching of pulsed power accelerator for megajoule-class dynamic-material-physics experiments 用于兆焦耳级动态材料物理实验的脉冲功率加速器阻抗匹配

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291259

Jihao Jiang, Lin Chen, Feng Li, Meng Wang

引用次数: 0

Fast magnetization of amorphous metallic cores 非晶金属磁芯的快速磁化

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291303

J. Taccetti, R. McCrady, C. Rose

引用次数: 2

Heavy pulse currents LTT switch unit 大脉冲电流LTT开关单元

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/ppc.2017.8291236

B. Fridman, A. Khapugin, V. Martynenko, R. Serebrov

引用次数: 0

Testing high voltage (200KV) DC cable and feed-through designs in rep-rated modes 在额定模式下测试高压(200KV)直流电缆和馈通设计

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291171

M. Mazarakis, M. Kiefer, J. Leckbee, Del H. Anderson, F. Wilkins, Robert J. Obergon

{"title":"Testing high voltage (200KV) DC cable and feed-through designs in rep-rated modes","authors":"M. Mazarakis, M. Kiefer, J. Leckbee, Del H. Anderson, F. Wilkins, Robert J. Obergon","doi":"10.1109/PPC.2017.8291171","DOIUrl":"https://doi.org/10.1109/PPC.2017.8291171","url":null,"abstract":"We have constructed a Component Test Stand (CTS) to test various high voltage components to be utilized in near future pulsed-power devices. In addition to cable and oil feed-through design voltage hold off, different types of high voltage switches will be evaluated. The system contains two switches connected in series separated by ∼60 ns worth of high voltage cable. The configuration is such that triggering the first switch enables the triggering of the second switch. This way we can evaluate the performance of two switches at the same time and study the influence of one switch on the other. A software system similar to LabView is designed and built to operate and collect data in a rep-rated mode. The two switches are immersed in transformer oil tanks and pressurized with dry air. The present paper will mainly present a cable-oil feed-through design evaluation as a function of repetition rate. The rep-rate will be adjusted to not affect the cable voltage hold-off as well as switch performance. The rep-rate is necessary in order to obtain component lifetime results in a reasonably short time. Apparently the transformer oil in a high voltage DC environment behaves much differently than in AC. Its behavior is similar to a weak electrolyte, and space charge effects seriously affect the current through it as well as the field distribution. This consideration is quite important in designing the proper high voltage DC cable-oil feedthroughs.","PeriodicalId":247019,"journal":{"name":"2017 IEEE 21st International Conference on Pulsed Power (PPC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114859364","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

Preliminary pusled power design of an induction injector for radiographic applications 射线照相用感应喷射器的初步推力设计

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291234

M. Bizot, B. Cassany, L. Courtois, C. Vermare

引用次数: 0

Design of a 30MJ capacitor-based pulsed power supply for eml 基于30MJ电容的eml脉冲电源设计

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291209

Zhenxiao Li, Yazhou Zhang, Jinguo Wu, Yong Jin, Hui Tian, Baoming Li

{"title":"Design of a 30MJ capacitor-based pulsed power supply for eml","authors":"Zhenxiao Li, Yazhou Zhang, Jinguo Wu, Yong Jin, Hui Tian, Baoming Li","doi":"10.1109/PPC.2017.8291209","DOIUrl":"https://doi.org/10.1109/PPC.2017.8291209","url":null,"abstract":"We are developing a 30MJ high power pulsed power supply (PPS) system with 10kV operation voltage for eMl research. The PPS system can be divided into several functional subsystems: pulse forming subsystem, control subsystem, charging subsystem, and measurement subsystem. Matrix type structure and modular architecture are adopted in the design of the PPS. The PPS is assembled in two 40' general purpose containers and a primary energy cabin in order to meet the requirements of field experiments and transportation. The pulse forming subsystem consists of 30 parallel pulse power modules (PPMs). Each module includes three 334kJ pulse forming units (PFUs) in parallel. The control subsystem has a two-level control structure. The primary level control device is a remote master controller and the second level is a pulse power module controller. The charging subsystem is composed of 30 high voltage capacity charging power supplies (CCPSs) and a primary energy unit (PEU). The PEU includes 30 lithium iron phosphate group (LIPG), each LIPG power supplied one CCPS. And the core component of CCPS is a series resonance converter based on IGBT bridges. The measurement subsystem adopts a PXI bus based data collection system and a master-slave network structure with optical fiber synchronous communication. With electrical parameters of the PPS and railgun being assumed, numerical studies of the railgun launch process have been down with Matlab/Simulink platform. Through thermal management simulation, the pulse components cooled by air nature can realized continuous discharging 5 times, each time interval of 6 seconds. It is benefits by the pulsed components development and progress. At present, 2 PFU and 1 CCPS have been built and debugged successfully. The 30MJ PPS is expected to be built soon after and will be used for EML research.","PeriodicalId":247019,"journal":{"name":"2017 IEEE 21st International Conference on Pulsed Power (PPC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122449393","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: 4

Modelling the mechanism of multipactor suppression through novel laser engineered structures 通过新型激光工程结构对多因子抑制机理进行建模

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI: 10.1109/PPC.2017.8291226

J. Smith, R. Valizadeh, O. Malyshev

引用次数: 0