2011 IEEE Pulsed Power Conference最新文献_第9页

IGBT based HV pulse generator for high conductivity liquid food treatment 用于高导电性液态食品处理的基于IGBT的高压脉冲发生器

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191574

M. Moonesan, J. Zhang, S. Jayaram

{"title":"IGBT based HV pulse generator for high conductivity liquid food treatment","authors":"M. Moonesan, J. Zhang, S. Jayaram","doi":"10.1109/PPC.2011.6191574","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191574","url":null,"abstract":"Several investigations show that there is an effective process to break a microorganism's membrane using the pulsed electric field (PEF) in order to pasteurize liquid foods. Such pulsed electric fields are produced by high voltage, high peak current and fast rise-time pulses applied to a chamber with liquid passing through it. Due to the nature of the short pulses the processes is nonthermal; hence, it helps to save the nutritional values of the treated food as well as its taste. Thus PEF treatment is considered as a good alternative to the conventional pasteurization treatments that are thermal processes. The aim of this work is to study the effect of design parameters such as switch type, gate drive circuit, and circuit configuration on the output voltage rise and fall times using a newly developed solid state pulsed generator. The paper presents the results obtained from treating liquid samples whose electrical conductivities fall in the range of a variety of liquid foods, using a variable 0–6 kV, with 3µs flat-top pulses; and rise-time of 70–1000ns. The peak current rating of the pulse generator 1500A, can sustain the heavy loading due to the high conductivities of the treated samples.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125200905","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: 9

Experimental validation of the first 1-MA water-insulated MYKONOS LTD voltage adder 第一个1毫安水绝缘MYKONOS LTD电压加法器的实验验证

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191552

M. Mazarakis, M. Savage, W. Fowler, L. Bennett, M. Jones, F. Long, M. Matzen, D. Mcdaniel, R. Mckee, J. Mckenney, J. Porter, B. Stoltzfus, K. Struve, W. Stygar, J. Woodworth, A. Kim, V. Sinebryukhov, K. LeChien, P. Wakeland, K. Ward, J. Puissant, T. F. Chavez, P. Jones, D. Lucero, G. Natoni, S. Lewis

{"title":"Experimental validation of the first 1-MA water-insulated MYKONOS LTD voltage adder","authors":"M. Mazarakis, M. Savage, W. Fowler, L. Bennett, M. Jones, F. Long, M. Matzen, D. Mcdaniel, R. Mckee, J. Mckenney, J. Porter, B. Stoltzfus, K. Struve, W. Stygar, J. Woodworth, A. Kim, V. Sinebryukhov, K. LeChien, P. Wakeland, K. Ward, J. Puissant, T. F. Chavez, P. Jones, D. Lucero, G. Natoni, S. Lewis","doi":"10.1109/PPC.2011.6191552","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191552","url":null,"abstract":"The LTD technological approach can result in very compact devices that can deliver fast, high current and high voltage pulses straight out of the cavity without any complicated pulse forming and pulse-compression network. Through multistage inductively insulated voltage adders, the output pulse, increased in voltage amplitude, can be applied directly to the load. Because the output pulse rise time and width can be easily tailored (pulse shaped) to the specific application needs, the load may be a vacuum electron diode, a z-pinch wire array, a gas puff, a liner, an isentropic compression load (ICE) to study material behavior under very high magnetic fields, or a fusion energy (IFE) target. Ten 1-MA LTD cavities were originally designed and built to run in a vacuum or Magnetic Insulated Transmission Line (MITL) voltage adder configuration and, after successful operation in this mode, were modified and made capable to operate assembled in a de-ionized water insulated voltage adder. Special care has been taken to de-aerate the water and eliminate air bubbles. Our motivation is to test the advantages of water insulation compared to the MITL transmission approach. The desired effect is that the vacuum sheath electron current losses and pulse front erosion would be avoided without any new difficulties caused by the de-ionized water insulator. Presently, we have assembled and are testing a two-cavity, water insulated voltage adder with a liquid resistor load. Experimental results of up to 95kV capacitor charging are presented and compared with circuit code simulations.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125465572","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: 6

A system for pulsed measurements based on LabVIEW 基于LabVIEW的脉冲测量系统

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191438

S. Korenev, C. Dew

引用次数: 0

Glass ceramic breakdown characteristics under repetitively pulsed condition 重复脉冲条件下玻璃陶瓷击穿特性

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191427

S. Wang, J. Zhang, H. Yang, Z. Zhang, T. Shu

引用次数: 0

Modular interchangeable high power helical antennas? 模块化可互换的高功率螺旋天线?

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191444

M. Lara, M. Mayes, W. Nunnally, T. Holt, J. Mayes

引用次数: 5

Measuring helical FCG voltage with an electric field antenna 用电场天线测量螺旋FCG电压

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191473

A. D. White, R. Anderson, J. Javedani, D. Reisman, D. Goerz, A. Ferriera, R. Speer

引用次数: 1

Fast rise time pulsed power generator using IGBTs and coaxial magnetic pulse compression circuit 采用igbt和同轴磁脉冲压缩电路的快速上升时间脉冲电源发生器

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191403

T. Sakugawa, S. Ueda, H. Akiyama, K. Suematsu, A. Kouda, Masashi Watanabe

{"title":"Fast rise time pulsed power generator using IGBTs and coaxial magnetic pulse compression circuit","authors":"T. Sakugawa, S. Ueda, H. Akiyama, K. Suematsu, A. Kouda, Masashi Watanabe","doi":"10.1109/PPC.2011.6191403","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191403","url":null,"abstract":"All solid-state pulsed power generators, which are operated with long lifetime, compactness and high reliability, have been developed to be used for industrial applications, such as excimer laser, high energy density plasma (EUV sources) and pulse ozonizer. Moreover, requirements of these applications are repetitive operation and fast risetime voltage. Recently, semiconductor power device technology has improved the performance of fast high voltage switching and low switching loss. In particular, insulated gate bipolar transistor (IGBT) is highly efficient semiconductor switching device. However, the IGBT switch is still not sufficient to drive the pulse laser and the pulse ozonizer itself. In practical systems, semiconductor switches are used with the assistance of magnetic switches. We have studied and developed high repetition rate small size pulsed power generator for generation of discharge plasma. This generator consists of an IGBT switch circuit, a step-up pulse transformer and multi-stage magnetic pulse compression circuit (MPC) at the last magnetic pulse compression stage, has a coaxial configuration. This fast-rising pulsed power generator using a coaxial MPC has been developed for fast rise time output current. We use two kinds of magnetic core materials, a Co-based amorphous alloy and a nanocrystalline Fe-based soft magnetic alloy. Two kinds of magnetic cores were investigated in the coaxial MPC to evaluate loss of the magnetic cores, leakage current of saturable inductors, and circuit inductance. The pulsed power generator produced a pulsed-high-current of 3.7 kA with a rise time of 7 ns at a repetition rate of 1000 pulses per second (pps). This generator is able to generate an output voltage of about 20 kV with voltage rise time of less than 10 ns. We did the operation test and generate the streamer discharge with 1000 pps.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131588872","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

A 40-stage DES plasma ARC railgun 40级DES等离子电弧轨道炮

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191671

R. Karhi, D. Wetz, J. Mankowski, M. Giesselmann, I. El-Dana

{"title":"A 40-stage DES plasma ARC railgun","authors":"R. Karhi, D. Wetz, J. Mankowski, M. Giesselmann, I. El-Dana","doi":"10.1109/PPC.2011.6191671","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191671","url":null,"abstract":"The design and experimental results of a 40-stage distributed energy store (DES) plasma arc railgun are presented. The railgun drives a free running hypervelocity plasma arc, one that is not pushing a payload, to velocities in excess of 10 km/s. These high velocities are of interest as they are required to successfully launch payloads into low earth orbit (LEO). The ability to launch payloads into LEO using a hypervelocity electromagnetic launcher has many financial benefits over the more conventional chemical combustion launchers. In collaboration on an Air Force Office of Scientific Research (AFOSR) funded Multidisciplinary University Research Initiative (MURI) project, the Center for Pulsed Power and Power Electronics (P3E) at Texas Tech University in Lubbock. Texas has been responsible for developing and investigating a functional scale model of a multi-stage DES railgun to determine its effectiveness to suppress restrike phenomenon and increase plasma armature railgun performance. The distributed energy scheme is theorized to suppress restrike arc formation because the back emf voltage is localized to active stage regions. B-dot sensors positioned along the length of the launcher provide data to measure the plasma arc velocity and detect restrike, arc splitting, or additional secondary arc formation phenomena.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125634020","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 modelling of a foil-flyer electromagnetic accelerator 箔片电磁加速器的数值模拟

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191602

B. Novac, K. Omar, N. Graneau, I. Smith, M. Sinclair

引用次数: 3

Transformer-based, repetitive pulsed power driver for a dense plasma focus 变压器为基础，重复脉冲功率驱动密集等离子聚焦

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191675

C. James, B. Bures, R. Madden, M. Krishnan, R. Adler

引用次数: 2