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IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium最新文献

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A solid-state Marx-type trigger generator 一个固态马克思型触发发生器
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26270
S. Pronko, M. Ngo, R. Germer
{"title":"A solid-state Marx-type trigger generator","authors":"S. Pronko, M. Ngo, R. Germer","doi":"10.1109/MODSYM.1988.26270","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26270","url":null,"abstract":"An all-solid-state Marx-type trigger generator has been designed and constructed. A configuration of transistors is used in a Mark bank circuit to generate a fast-rising, low-jitter, high-voltage pulse. The transistor switch in each stage is a pnp-npn pair connected together so as to emulate a four-layer diode or thyristor. This configuration eliminates stage-to-stage triggering difficulties since successive stages are triggered by a traveling overvoltage wave. The output pulse parameters of a prototype circuit (six stages charged to 350 V) are 2000 V/sub peak/ (into 100 Omega ), 50 ns risetime (10%-90%), 200 ns duration (FWHM), and a pulse-to-pulse jitter of less than 2 ns. The circuit, which is being used as a grid driver for a hydrogen thyratron, is very simple and inexpensive to construct.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114792275","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: 12
Multiple pulse photoconductive semiconductor switching 多脉冲光导半导体开关
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26288
F. Zutavern, B. McKenzie, G. Loubriel, M. O’Malley, R. Hamil, L. P. Schanwald
{"title":"Multiple pulse photoconductive semiconductor switching","authors":"F. Zutavern, B. McKenzie, G. Loubriel, M. O’Malley, R. Hamil, L. P. Schanwald","doi":"10.1109/MODSYM.1988.26288","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26288","url":null,"abstract":"The authors discuss the use of PCSSs (photoconductive semiconductor switches) to create bursts of high-power pulses above 10 MHz. Three methods are considered; (1) circuit reflections which are produced when a switch closes and opens on a charged transmission line; (2) directly driven PCSSs which follow an RF modulated light source, and (3) oscillations induced by the negative-differential-conductivity characteristics of some semiconductors at high fields. Of these techniques, directly driven PCSSs which use RF-modulated light sources appear to be the most straightforward to develop. Experiments to test feasibility of PCSSs to drive a pulsed linear induction accelerator are described and preliminary results are given.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129503297","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
Energy recovery circuit for testing high average power 用于测试高平均功率的能量回收电路
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26257
R.N. Hithcock
{"title":"Energy recovery circuit for testing high average power","authors":"R.N. Hithcock","doi":"10.1109/MODSYM.1988.26257","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26257","url":null,"abstract":"In high-average-power, high-repetition modulator systems, component testing requires a suitable testbed to perform validation and lifetime tests. The author describes a circuit for testing high-average-power components. Design information is given to show how to build a testbed that will operate at an overall power gain, defined as the power the switches operate at divided by the input power, of 10 to 20. Circuit losses are analyzed. The advantages and disadvantages of this type of circuit are discussed.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128228250","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
Studies on the use of propylene carbonate as a high-voltage insulator 碳酸丙烯酯作为高压绝缘体的研究
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26301
R. Clark, D. L. Green, M. Buttram, R. Lawson, G.J. Rohwein
{"title":"Studies on the use of propylene carbonate as a high-voltage insulator","authors":"R. Clark, D. L. Green, M. Buttram, R. Lawson, G.J. Rohwein","doi":"10.1109/MODSYM.1988.26301","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26301","url":null,"abstract":"A research program has been initiated to determine if propylene carbonate can be used as an insulator in the high-voltage accelerator field. Electrical properties, such as dielectric strength, resistivity, frequency response, and surface tracking, have been investigated. Initial tests show that propylene carbonate can be deionized to several M Omega -cm and that the electric field strength of plastic laminates immersed in it is several times higher than that of laminates immersed in oil. These tests reveal that a materials compatibility problem exists but that it will not be so severe as to limit propylene carbonate usage in this field.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"37 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128881122","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: 14
A low power-loss circuit for thyratron test and evaluation 一种用于闸流管测试和评估的低功耗电路
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26256
C. Pirrie, P. Culling, H. Menown, R. Sheldrake
{"title":"A low power-loss circuit for thyratron test and evaluation","authors":"C. Pirrie, P. Culling, H. Menown, R. Sheldrake","doi":"10.1109/MODSYM.1988.26256","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26256","url":null,"abstract":"A cheater circuit technique for thyratron evaluation is examined in detail. The design, construction and operation of a pilot circuit based on the technique is described. A CX1825 thyratron is operated in the circuit, where the current pulse is 1000 A peak with a half-sinusoidal base width of 11 mu s, the anode voltage is 35 kV, and the pulse repetition rate is 500-600 p.p.s. With an average current of 4 A, the pilot circuit thus operates at an effective thyratron average power of 70 kW, but only consumes 1350 W of circuit power, representing a power bill reduction factor in excess of 50. A CX1536 thyratron is operated in a higher-power version of the cheater circuit at an effective average power of 250 kW, with an anode voltage of 50 kV and a peak current of 2.1 kA at 1100 p.p.s. It is concluded that the technique represents an effective and versatile means of evaluating thyratrons at high average powers, particularly where only moderate peak powers are required.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126405324","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
Modeling and simulation of power conditioning equipment containing saturable inductors using a personal computer 用个人计算机对含饱和电感的电力调节设备进行建模和仿真
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26276
R. Nelms, B. B. Reid, L.L. Grigsby
{"title":"Modeling and simulation of power conditioning equipment containing saturable inductors using a personal computer","authors":"R. Nelms, B. B. Reid, L.L. Grigsby","doi":"10.1109/MODSYM.1988.26276","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26276","url":null,"abstract":"The authors present a technique for the simulation of power-conditioning equipment containing saturable inductors. An ideal sampler, variable gain, and clamp are used to model the saturable inductor. A state variable is assigned to this group of elements. A linear homogeneous state model is formulated and solved using the state-transition-matrix approach. The state variable associated with the sampler, gain, and clamp are held constant for the solution of the state model. These added states are updated using a jump matrix and nonlinear description function. The solution achieved using the technique compares favorably with the solution obtained from a simulation using the Electromagnetic Transients Program.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122251691","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
Axial magnetic field effects on redesigned ignitrons utilizing glass walls and cylindrical dielectrical inserts 轴向磁场对利用玻璃壁和圆柱形介电插入重新设计的点火电子管的影响
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26278
D.L. Adkins-Loree, M. Giesselmann, M. Kristiansen
{"title":"Axial magnetic field effects on redesigned ignitrons utilizing glass walls and cylindrical dielectrical inserts","authors":"D.L. Adkins-Loree, M. Giesselmann, M. Kristiansen","doi":"10.1109/MODSYM.1988.26278","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26278","url":null,"abstract":"The authors discuss test results for three special types of ignitrons; a small glass-walled ignitron, a demountable ignitron, and a commercial NL-2909 ignitron. The conduction experiments used a capacitor bank with 2.56 mF total capacitance and 128 kJ maximum energy at 10 kV. The ignitrons were in a critically damped configuration at peak currents of up to 100 kA. To study effects of axial magnetic fields on the switching characteristics, including self-breakdown voltage and arc voltage, the test specimens were mounted inside high-power, water-cooled electromagnets. The demountable tube was tested before and after the insertion of a dielectric cylindrical shield between the tube wall and the inner conducting structure of the tube. It is shown that axial magnetic fields stabilize and confine the discharge plasma to the interelectrode region, reduce the arc voltage and its ripple, and significantly reduce the self-breakdown voltage.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124991209","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
Modular design of a 100 GW, 10 kJ, charged dielectric line driven pulsed transformer 100gw, 10kj，带电介质线驱动脉冲变压器的模块化设计
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26237
P. Ranon, R. L. Schlicher, J. O'Loughlin, D. J. Hall, W. Baker, M. Scott
{"title":"Modular design of a 100 GW, 10 kJ, charged dielectric line driven pulsed transformer","authors":"P. Ranon, R. L. Schlicher, J. O'Loughlin, D. J. Hall, W. Baker, M. Scott","doi":"10.1109/MODSYM.1988.26237","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26237","url":null,"abstract":"The pulse obtainable from a dielectric-charged line-driven pulsed transformer is discussed. In the proposed design, charged cables (in the normal configuration as well as in the Blumlein configuration) are used as intermediate stores to take advantage of the extremely high energy densities in the electrostatically stressed dielectric insulators. The proposed conceptual design is a 1 MV, 100 GW, 10 Omega , 100 ns, 10 kJ pulser. It is concluded that with a more inductive transformer (i.e. with a core or possibly a larger transformer), it would be possible to extend the output pulse, thereby increasing the output energy. It was found during the design that the Blumlein pulser is more difficult and more expensive to construct than the conventional charged cable pulser.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122878698","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
Recovery of vacuum switching gaps 真空开关间隙的恢复
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26269
M. Abdalla, R. Dougal
{"title":"Recovery of vacuum switching gaps","authors":"M. Abdalla, R. Dougal","doi":"10.1109/MODSYM.1988.26269","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26269","url":null,"abstract":"Laser-induced fluorescence imaging was used to characterize the spatial distribution of post-discharge switch vapors. It is shown that in short-pulse switching gaps, even at relatively low current levels, energy coupling into the anode drives the vapor production. This is consistent with the fact that there is a strong turn-on transient in short-pulse gaps which does not die before the recovery phase begins. In 60 Hz applications, the turn-on transient might not be so severe, any turn-on transient that does exist is substantially decoupled from the recovery phase by a long intervening conduction period. In gaps carrying long and relatively low-amplitude current pulses, bulk heating of the electrodes can occur, thus ensuring that post discharge vapors are emitted more or less uniformly from the electrode surfaces. In these switches, recovery models based on vapor emission from a multitude of small particles might be appropriate. In short-pulse switching gaps, on the other hand, the high-power turn-on dominates other processes during the recovery phase.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131477611","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
High current photoconductive semiconductor switches 大电流光导半导体开关
IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium Pub Date : 1988-06-20 DOI: 10.1109/MODSYM.1988.26289
G. Loubriel, O.W. O'Malley, F. Zutavern, B. McKenzie, W. R. Conley, H. Hjalmarson
{"title":"High current photoconductive semiconductor switches","authors":"G. Loubriel, O.W. O'Malley, F. Zutavern, B. McKenzie, W. R. Conley, H. Hjalmarson","doi":"10.1109/MODSYM.1988.26289","DOIUrl":"https://doi.org/10.1109/MODSYM.1988.26289","url":null,"abstract":"It is shown that Si photoconductive semiconductor switches (PCSSs) can be used to switch high voltages (up to 123 kV), high fields (up to 82 kV/cm) and high currents (2.8 kA). The ability of the samples to withstand this type of high-voltage, high-current switching depends on the way in which the current penetrates the semiconductor. The appropriate use of water or contacts greatly improves the switching capability. It is also shown that the wafers can support large currents (4.0 kA for GaAs and 2.8 kA for Si) and large linear current densities (3.2 kA/cm for GaAs and 1.4 kA/cm for Si). For GaAs, this linear current density corresponds to about 1 MA/cm/sup 2/, given a penetration depth of about 10/sup -3/ cm. It is determined that the lock-on phenomenon can be triggered with light of varying photon energy to reach a lock-on field that is both impurity-concentration and sample-temperature dependent.<<ETX>>","PeriodicalId":372718,"journal":{"name":"IEEE Conference Record of the 1988 Eighteenth Power Modulator Symposium","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133867984","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: 21
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