2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)最新文献_第3页

Effects of capacitive versus resistive loading on high transformation ratio piezoelectric transformers for modular design considerations 基于模块化设计考虑的高变比压电变压器容阻负载的影响

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518835

J. Vangordon, S. Kovaleski, B. Gall, P. Norgard, E. Baxter, B. Kim, J. W. Kwon, G. Dale

引用次数: 6

Nonlinear Fowler-Nordheim plots of carbon nanotubes (CNTs) in vacuum and partial pressures 碳纳米管在真空和分压下的非线性Fowler-Nordheim图

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518808

Rujun Bai, H. Kirkici

引用次数: 3

Measurement and analysis of insulation resistance of metallized polypropylene film capacitor under high electric field 高电场作用下金属化聚丙烯薄膜电容器绝缘电阻的测量与分析

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518819

Hua Li, Zhiwei Li, Fuchang Lin, Yaohong Chen, De Liu, Bowen Wang

引用次数: 1

X-band relativistic backward wave oscillator with two-spiral corrugated Bragg reflector 带双螺旋波纹布拉格反射器的x波段相对论后向波振荡器

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518855

A. Elfrgani, M. Fuks, S. Prasad, E. Schamiloglu

引用次数: 4

Some considerations to the ITER snubbers 对ITER怠慢者的一些考虑

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518714

Ge Li

引用次数: 3

Pulse-to-pulse voltage reproducibility efficient prediction method for high precision klystron modulator design 高精度速调管调制器设计中脉间电压再现性高效预测方法

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518685

R. Soares, D. Aguglia

{"title":"Pulse-to-pulse voltage reproducibility efficient prediction method for high precision klystron modulator design","authors":"R. Soares, D. Aguglia","doi":"10.1109/IPMHVC.2012.6518685","DOIUrl":"https://doi.org/10.1109/IPMHVC.2012.6518685","url":null,"abstract":"Pulse-to-pulse-reproducibility in Switch Mode Power Converters can be affected by random phenomena such as switch jitter, external electromagnetic perturbations, thermal fluctuations, etc. Although many phenomena influence the reproducibility, the most important and most predictable is the jitter of the switch(es). The switch jitter influences the ripple by displacing it in time, and therefore plays a fundamental role in pulse-to-pulse reproducibility. Furthermore, when compared with other phenomena, switch jitter affects reproducibility differently depending on the converter topology (since the switch arrangement is different). In order to consider pulse-to-pulse reproducibility early in the design process of a converter (i.e. topology selection), an efficient and flexible method for estimating this performance as a function of ripple and the expected, or measured, switch jitter is necessary. This paper presents a methodology applicable to all switch mode power converters, which allows the derivation of the pulse-to-pulse reproducibility versus ripple and switch jitter (driver included). The numerically validated method uses analytical expressions derived from harmonics analysis.","PeriodicalId":228441,"journal":{"name":"2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127091607","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: 5

Development of a RF burst pulse generator using a non-linear transmission line for cancer treatment 用于癌症治疗的非线性传输线射频脉冲发生器的研制

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518825

Y. Abe, Y. Minamitani

{"title":"Development of a RF burst pulse generator using a non-linear transmission line for cancer treatment","authors":"Y. Abe, Y. Minamitani","doi":"10.1109/IPMHVC.2012.6518825","DOIUrl":"https://doi.org/10.1109/IPMHVC.2012.6518825","url":null,"abstract":"Nanosecond and sub-nanosecond high voltage pulses can provide new applications. A cancer treatment by an ultra-short pulse high electric field is one of them. High power pulse electromagnetic wave has been proposed to apply the high electric field for that treatment. This work focuses on the design of a compact high power burst pulse electromagnetic wave generator using a nanosecond pulsed power generator for the cancer treatment. In previous study, we have used a LC inversion circuit as a power supply of the pulse electromagnetic wave generator. The LC inversion circuit is useful in order to output efficiently electromagnetic wave by the antenna. However, since the LC inversion circuit outputs the voltage waveform with damping oscillation, the duration of the burst pulse is under 100ns. Therefore, we focus on a coaxial nonlinear transmission line (NLTL) filled with ferrite cores. NLTL is capable of generating the high frequency osculation pulse wave. The non-linear coaxial line has the advantage of simple structure and low cost in comparison with the other NLTL using a non-linear element. Therefore we have investigated the burst pulse generator using the ferrite-filled coaxial non-linear transmission line in order to extend the duration of the burst oscillation for the cancer treatment. In the experiment, the pulse duration time and frequency of the output pulse of the NLTL for various conditions of the input pulse shape and the magnetic cores were investigated.","PeriodicalId":228441,"journal":{"name":"2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127134157","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: 5

Investigation of ozone production using nanosecond pulsed power to increase ozone concentration 利用纳秒脉冲功率提高臭氧浓度产生臭氧的研究

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518793

R. Mabuchi, Y. Nakata, T. Kageyama, K. Teranishi, N. Shimomura

{"title":"Investigation of ozone production using nanosecond pulsed power to increase ozone concentration","authors":"R. Mabuchi, Y. Nakata, T. Kageyama, K. Teranishi, N. Shimomura","doi":"10.1109/IPMHVC.2012.6518793","DOIUrl":"https://doi.org/10.1109/IPMHVC.2012.6518793","url":null,"abstract":"In ozone production using plasma generated with pulsed power, the concentration of ozone is not high although ozone is produced with high efficiency. Effect of shortening electrode separation of a coaxial reactor was investigated in order to generate ozone in high concentration in using pulsed power. Ozone concentration and yield increased with decreasing diameter of the reactor because spatial density of plasma would become higher. In these reactors, the ozone yield remained in nearly constant value while the ozone concentration increased in proportion to pulse repetition rate. In reactor of 17 mm, saturation tendency and reduction of the concentration were however seen. In this reactor, the ozone concentration decreases with time after reaching a peak value. Spark discharges with short electrode separation caused temperature elevation of electrodes and gases, so that thermal decomposition of ozone molecules occurred. When oxygen gas containing ozone instead of pure oxygen gas flowed into the reactor, rise of the ozone concentration competed with ozone concentration produced with pure ozone gas. The rise showed potential of plasma for ozone production. Ozone with higher concentration could be obtained by the potential of plasma on an appropriate condition.","PeriodicalId":228441,"journal":{"name":"2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123734666","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

Design and construction of a 250 kV, 100 Hz repetitive Vircator test stand 250kv, 100hz重复性升降机试验台的设计与施工

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518738

K. Clements, R. Curry, R. Druce

{"title":"Design and construction of a 250 kV, 100 Hz repetitive Vircator test stand","authors":"K. Clements, R. Curry, R. Druce","doi":"10.1109/IPMHVC.2012.6518738","DOIUrl":"https://doi.org/10.1109/IPMHVC.2012.6518738","url":null,"abstract":"The Center for Physical and Power Electronics (CPPE) at the University of Missouri-Columbia is investigating the applicability of utilizing two separate Vircators simultaneously for multipulse testing. To facilitate this research, we have designed and constructed a versatile modulator to drive the HPM sources that allow us to drive two Vircators in parallel. The modulator consists of a thyratron-switched capacitor bank that pulse charges a water transmission line through a pulse transformer. The water transmission line is then switched into a voltage adder by a pressurized oil switch with an output risetime of 20 ns. The capacitor bank is charged to 30 kV by a bank of power supplies delivering up to 40 kJ/s and switched by a thyratron into the pulse transformer. The 1:10 pulse transformer charges the water line to 300 kV in approximately 2.5 μs. When driven by the pulse line, the 250 kV output voltage is utilized to simultaneously drive the two, 32 Ω Vircators in parallel or a 16 Ω load with a 70 ns long pulse. We will present details of the design, including particle-in-cell simulations using CST Particle Studio and SPICE circuit simulations of the Vircator design and modulator design, as well as construction details. The test results will also be presented.","PeriodicalId":228441,"journal":{"name":"2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132437395","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

Frequency agility of a ferrite-loaded, nonlinear transmission line 铁氧体负载非线性传输线的频率捷性

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC) Pub Date : 2012-06-03 DOI: 10.1109/IPMHVC.2012.6518853

C. Simmons, J. Bragg, J. Dickens, A. Neuber

引用次数: 2