摘要翻译:
许多使用高能等离子体的应用都是使用微波管(MWT)实现的,微波管的峰值功率在数百MW,频率在GHz。MWT的一种失效模式是由于管内燃弧事件中的过剩能量。撬棍是通过在故障时转移能量来保护MWT的。为了计算MWT中释放的能量,直流故障电流模型和MWT模型是必不可少的。对于撬棍应用的MWT采用等效保险丝模型。本文提出了基于焦耳积分能量概念的直流故障电流模型。该模型提供了选择实际观测变压器电抗电阻比(X/R)范围的灵活性,也允许使用微波应用中高压(HV)电源电路中使用的直流电流限流电阻范围。在模型中引入校正因子,考虑了多脉冲二极管整流器引起的系统非线性。本文表明,对于直流侧并联和串联整流电路,可以采用相同的校正系数。实验验证了直流故障电流模型和MWT模型。采用10kV、1kA撬棍模型,将MWT能量限制在10J以下。
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英文标题:
《Microwave Tube Fault-Current Model for Design of Crowbar Protection》
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作者:
Subhash Joshi T.G. and Vinod John
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最新提交年份:
2018
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分类信息:
一级分类:Electrical Engineering and Systems Science 电气工程与系统科学
二级分类:Signal Processing 信号处理
分类描述:Theory, algorithms, performance analysis and applications of signal and data analysis, including physical modeling, processing, detection and parameter estimation, learning, mining, retrieval, and information extraction. The term "signal" includes speech, audio, sonar, radar, geophysical, physiological, (bio-) medical, image, video, and multimodal natural and man-made signals, including communication signals and data. Topics of interest include: statistical signal processing, spectral estimation and system identification; filter design, adaptive filtering / stochastic learning; (compressive) sampling, sensing, and transform-domain methods including fast algorithms; signal processing for machine learning and machine learning for signal processing applications; in-network and graph signal processing; convex and nonconvex optimization methods for signal processing applications; radar, sonar, and sensor array beamforming and direction finding; communications signal processing; low power, multi-core and system-on-chip signal processing; sensing, communication, analysis and optimization for cyber-physical systems such as power grids and the Internet of Things.
信号和数据分析的理论、算法、性能分析和应用,包括物理建模、处理、检测和参数估计、学习、挖掘、检索和信息提取。“信号”一词包括语音、音频、声纳、雷达、地球物理、生理、(生物)医学、图像、视频和多模态自然和人为信号,包括通信信号和数据。感兴趣的主题包括:统计信号处理、谱估计和系统辨识;滤波器设计;自适应滤波/随机学习;(压缩)采样、传感和变换域方法,包括快速算法;用于机器学习的信号处理和用于信号处理应用的
机器学习;网络与图形信号处理;信号处理中的凸和非凸优化方法;雷达、声纳和传感器阵列波束形成和测向;通信信号处理;低功耗、多核、片上系统信号处理;信息物理系统的传感、通信、分析和优化,如电网和物联网。
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一级分类:Physics 物理学
二级分类:Instrumentation and Detectors 仪器仪表和探测器
分类描述:Instrumentation and Detectors for research in natural science, including optical, molecular, atomic, nuclear and particle physics instrumentation and the associated electronics, services, infrastructure and control equipment.
用于自然科学研究的仪器和探测器,包括光学、分子、原子、核和粒子物理仪器和相关的电子学、服务、基础设施和控制设备。
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英文摘要:
Many applications that use high energy plasma are realized using Microwave tubes (MWT) that operate at peak power in the range of hundreds of MW and frequency in GHz. One failure mode of the MWT is due to the excess energy in the tube during internal arcing events. Crowbar is used to protect the MWT by diverting the energy during fault. To compute the energy released into the MWT, the dc fault current model and the MWT model are essential. An equivalent fuse wire model is utilized for the MWT for the crowbar applications. The paper proposes a model for the dc fault current, the analysis for which is based on Joules Integral energy concept. The model provides flexibility to choose a range of practically observed reactance to resistance ratio (X/R) of transformer and also allows the use of a range of dc current limiting resistances that are utilized in the High Voltage (HV) power supply circuits in Microwave applications. The non-linearity of the system due to the multipulse diode rectifier is also considered by introducing a correction factor in the model. This paper shows that the same correction factor can be applied for both dc side parallel and series connected rectifier circuits. Both dc fault current and MWT models are verified experimentally. Using the model a 10kV , 1kA crowbar is built to limit the energy in MWT below 10J.
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PDF链接:
https://arxiv.org/pdf/1802.09346