Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium最新文献_第8页

Optoelectronic Class AB Microwave Power Amplifier 光电AB类微波功率放大器

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365203

C.-J. Huang, R. O’Connell

引用次数: 1

First Demonstration of the Simplest Cross-field Ubitron 最简单的跨场Ubitron的首次演示

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365207

A. Andreev, M. Fuks, E. Schamiloglu

引用次数: 0

Contribution to the RF Breakdown in Microwave Devices and its Prediction 微波器件中射频击穿的贡献及其预测

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365174

C. Vicente, M. Mattes, D. Wolk, H. Hartnagel, J. Mosig, D. Raboso

引用次数: 13

Design and Development of DC Power Supply System for 1.5MW, 40MHz, RF Amplifier 1.5MW、40MHz射频放大器直流供电系统的设计与开发

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365233

P. Khilar, A. Makwana, J. Soni, K. Parmar, K. Sathyanarayana, Y. Srinivas, M. Kushwah, D. Bora

{"title":"Design and Development of DC Power Supply System for 1.5MW, 40MHz, RF Amplifier","authors":"P. Khilar, A. Makwana, J. Soni, K. Parmar, K. Sathyanarayana, Y. Srinivas, M. Kushwah, D. Bora","doi":"10.1109/MODSYM.2006.365233","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365233","url":null,"abstract":"A 1.5 MW RF (ap40 MHz) amplifier using Eima tetrode 4CM2500KG is in the testing phase, here at Institute for Plasma Research (IPR). This amplifier is being developed for the ion cyclotron resonance heating (ICRH) system of Super Conducting Steady State Tokamak, SST1. This RF amplifier amplifies an input power of 200 kW to about 1.5 MW. Few DC power supplies are needed for the operation of this amplifier such as plate supply, screen supply, filament supply, and grid supply. We have a conventional HVDC power supply rated for 60 Kv@10 A for the preliminary testing of this RF amplifier. The required RHVPS (25 Kv@120 A) for this amplifier is under development, hence it is beyond the scope of this paper. This amplifier needs about 10 kW (15 V@650 A) of DC power for heating its filament. We have developed a DC power supply of 12kW (15 V@800 A) to feed the heater. Also, the amplifier needs about 4 kW (500 V@8 ADC) and 6 kW (1500 V@4 A) of DC power to feed its control grid and the screen grid, respectively. So, we have developed another two DC power supplies capable of delivering 6 kW (600 V@10 A) and 7.5 kW (1500 V@5 A) to bias the control grid and screen grid of this amplifier, respectively. These power supplies are to be remotely operated from a PC located at a distance of about 20 to 50 meters. Also, there are some interlocks needed among these power supplies and with the plate HVDC power supply, for the stable and safe operation of the amplifier. In this paper, the test results of all these power supplies on a dummy load will be presented","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129922332","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

High Power Density Capacitor Charging Power Supply Development for Repetitive Pulsed Power 重复脉冲电源用高功率密度电容器充电电源的研制

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365261

M. McQuage, V. McDowell, F. Peterkin, J. Pasour

{"title":"High Power Density Capacitor Charging Power Supply Development for Repetitive Pulsed Power","authors":"M. McQuage, V. McDowell, F. Peterkin, J. Pasour","doi":"10.1109/MODSYM.2006.365261","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365261","url":null,"abstract":"Power modulators for compact, repetitive systems are continually faced with new requirements as the corresponding system objectives increase. Changes in pulse rate frequency or number of pulses significantly impact the design of the power conditioning system. In order to meet future power supply requirements, we have developed several high voltage (HV) capacitor charging power supplies (CCPS). This effort focuses on a volume of 6\" x 6\" x 14\" and a weight of 25 lbs. The primary focus was to increase the effective capacitor charge rate, or power output, for the given size and weight. Although increased power output was the principal objective, efficiency and repeatability were also considered. A number of DC-DC converter topologies were compared to determine the optimal design. In order to push the limits of output power, numerous resonant converter parameters were examined. Comparisons of numerous topologies, HV transformers and rectifiers, and switching frequency ranges are presented. The impacts of the control system and integration requirements are also considered.","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129742158","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

Surface Flashover under RF and Unipolar Excitation at Atmospheric Conditions 大气条件下射频和单极激励下的表面闪络

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365171

J. Krile, A. Neuber, G. Edmiston, H. Krompholz

引用次数: 1

A High Repetition Rate Battery-Powered 0.5 MV Pulser for Ultrawideband Radiation 一种用于超宽带辐射的高重复频率电池供电的0.5 MV脉冲发生器

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365322

P. Sarkar, B. Novac, I. Smith, R.A. Miller, R. M. Craven, S. Braidwood

引用次数: 2

Characterization of Exploding Film Plasmas Using Emission Spectroscopy 用发射光谱法表征爆炸膜等离子体

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365306

W. J. Sarjeant, A. Halstead, K. Burke, R. Lange, J. Marian, H. Moore

引用次数: 0

Surface Flashover Characteristics of Nano-Composite Dielectric Materials Under DC and Pulsed Signals in Partial Vacuum 部分真空直流和脉冲信号下纳米复合介电材料的表面闪络特性

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365188

M. Serkan, H. Kirkici, K. Koppisetty

{"title":"Surface Flashover Characteristics of Nano-Composite Dielectric Materials Under DC and Pulsed Signals in Partial Vacuum","authors":"M. Serkan, H. Kirkici, K. Koppisetty","doi":"10.1109/MODSYM.2006.365188","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365188","url":null,"abstract":"Surface flashover is a major issue in electrical insulation in power systems, both in space or atmospheric environments. In general, random emission of a small number of electrons at the cathode results in positive charging of the dielectric surface at the triple junction, thus initiating surface flashover across the dielectric. Developments in nano-particulate and nano-dielectric materials and effects of nano-scale fillers on electrical, thermal and mechanical properties of polymeric materials have been observed. In this paper, we present experimental results of surface flashover characteristics of epoxy resin and epoxy resin cast with powdered Al2O3 in partial vacuum. The flashover experiments are conducted with DC, AC and repetitive pulsed signals separately. Surface flashover voltage and current waveforms and light emission data with PMT were recorded. The samples used in the experiments were produced by using either epoxy resin of known properties, or by mixing known quantities of Al2O3 with epoxy. The electrode material placed over the dielectric samples was copper","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"374 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114879249","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

Partial Discharge Detection of Continuous Length Wire 连续长度导线的局部放电检测

Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium Pub Date : 2006-05-14 DOI: 10.1109/MODSYM.2006.365184

J.L. Rush

{"title":"Partial Discharge Detection of Continuous Length Wire","authors":"J.L. Rush","doi":"10.1109/MODSYM.2006.365184","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365184","url":null,"abstract":"The ability to eliminate or minimize defects in high voltage wire can help in extending system reliability by eliminating or minimizing sources of partial discharge. Partial discharge testing of single conductor wire is traditionally performed on discrete lengths of wire or wires terminated to connectors. However, when excessive partial discharge is detected in completed assemblies, expensive rework is the result. Eliminating defects, prior to connector termination and testing, would be beneficial. Existing partial discharge detection methods of wire require the termination of fixed lengths to temporary test connectors. The wire must have a braided shield or similar ground conductor placed around its outer diameter and fixed to the connector. These test connector terminations must be constructed carefully, since discharges resulting from poor terminations cannot easily be differentiated from discharges produced within the wire. Additionally, discharges found within the wire cannot always be localized for removal. A method is presented for partial discharge pulse detection in continuous length wires. Detection of partial discharges may indicate the presence of electrical insulation defects which may result in overstressing by an electric field and/or the occurrence of transient gas ionization, which will erode the insulation and ultimately lead to a reduction in wire reliability and life. This test method offers the advantage of locating wire insulation defects in process, such as small voids, fractures, and separations prior to termination which then can be cut from the spool of wire or otherwise identified. Electrostatic models of the system are analyzed and testing results are discussed related to fluoropolymer insulated wires. A conductor cleaning process and optical detection apparatus, intended to minimize or identify insulation defects caused by contamination, is also presented","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127585867","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