-
Mr Nathan Wemple (Sandia National Laboratories)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
The Z pulsed power driver at Sandia National Laboratories is used for a wide range of high energy density physics experiments in areas such as inertial confinement fusion, radiation effects, and dynamic material properties. Experimental demands are pushing for the highest energy attainable with more reliability and precision in timing and pulse compression. A previous version of the...
Go to contribution page -
Yuan Hui Wu21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
To eliminate the common mode signal, the new magnetic probe (B-dot) is employed with balance design with two loops wired at opposite direction. The magnetic probe is capable of measuring signal up to 150Mhz, we will present the design details and calibration procedures.
Go to contribution page -
Masoume Amirbande (IUST)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Unlike other types of switches can be used in pulsed power, magnetic switch has not control gate. This means that the switching time is a function of load conditions, the source of the initial pulse, switch terminal voltage waveforms caused by these two and the switch design parameters. Considering the fact that the switch should be designed to suit the load and source and not vice versa, we...
Go to contribution page -
Dr Adam Schreiber (NSWC Dahlgren)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Of general interest to the scientific and engineering community is the development of facilities for testing, validation, and qualification of pulsed power systems, components, and assemblies. Naval Surface Warfare Center Dahlgren Division (NSWCDD) has a long history of designing and implementing facilities for testing pulsed power systems capable of generating, transmitting, and sinking...
Go to contribution page -
Dr Jordan Chaparro (Naval Surface Warfare Center Dahlgren)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
A low impedance modulator made up of ceramic-loaded parallel-plate transmission line sections in a Marx configuration has been developed as a test bed for high power microwave sources. The generator has configurable impedance between 15 and 25 ohms, pulse-width between 50 and 200 ns, and can operate at repetition rates up to 100 Hz with a 200 kW high voltage power supply. The energy stored...
Go to contribution page -
Ricky Tang (Sandia National Laboratories)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
The Z machine is a high-current pulsed-power generator located at Sandia National Laboratories capable of delivering 100-ns, 30-MA current pulses to a variety of targets. Under certain conditions, however, a significant fraction of the current does not reach the load but is shunted across the inter-electrode vacuum gap that leads to the load. That undesirable current loss is believed to be...
Go to contribution page -
Andrew Fierro (Sandia National Laboratories)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Initial optimization of the Sandia National Laboratories Z accelerator has enabled the delivery of tens of MA’s of current to various load types. However, plasma formation in the vacuum magnetically insulated transmission lines (MITLs) is seen as one of the limiting factors in improving machine performance. It is believed that severe heating of the electrode surfaces, due to a combination of...
Go to contribution page -
Dr Hiren Canacsinh (ISEL/INESC-ID/GIA2P2)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
The Marx generator, also known as switched capacitor voltage multipliers, is one of the most used topology to generate high-voltage unipolar or bipolar pulses. The Marx generator is composed of n capacitors, charged by a parallel connection to the power supply and discharged to the load by a series connection. The connections are enabled using switching power semiconductors. Current...
Go to contribution page -
Seth Miller (SNL`)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
ABSTRACT
Go to contribution page
High energy density metalized film capacitors can be an enabling technology for pulsed power systems. High electric field stress (i.e. high voltage) is known to limit shot life on these capacitors from breakdowns through the thin film which reduces the capacitance. This is commonly referred to as the “self-healing” property of metalized film caps. Much research has been done to... -
Tyler Buntin (Texas Tech University)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Transient magnetic diffusion through conductors of thickness comparable to the skin depth is investigated. Since an analytical solution is unavailable in this case, such magnetic diffusion results must be determined via simulation or experimentation.
Go to contribution page
In the experimental approach a sinusoidal current with peak values in the range of 20-30 kA (approx. 7 kHz ringing frequency) is pushed through... -
Dr Hiren Canacsinh (ISEL/INESC-ID/GIA2P2)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Nowadays there are many topologies based on the Marx concept using power semiconductors devices as switches that are capable to generate unipolar or bipolar high voltage pulses. In some industrial applications such as water decontamination or liquid food processing, the use of bipolar pulses instead of unipolar pulses, has demonstrated an enhanced final product or industrial process. Generally...
Go to contribution page -
Faisal Peer Mohamed (University of Strathclyde, Glasgow, UK)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
The breakdown of insulation in cables while in service can cause considerable damage to equipment and the accessories to which it is connected. It has been understood that such failures may be related to the occurrence and severity of partial discharges. Protrusions are one of the most critical types of imperfection, and affect primarily the semiconductor shields. The effects are more severe...
Go to contribution page -
Bai-peng Song (Xi’an Jiaotong University)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
With the development of high power microwave (HPM) technology and its transmitted power increasing from the level of MW to GW, dielectric window, as an important part of transmission and radiation system, is suffered with high gradient electric field, resulting in phenomena of surface flashover. Secondary electron emission yield (SEEY) is an important parameter determining build up of...
Go to contribution page -
Veda Prakash Gajula (Institute for Plasma Research)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Liquid dielectric breakdown properties are studied towards the development of efficient intermediate storage devices for pulsed power applications. A Tesla based pulse generator along with suitable voltage (V-dot) and current (self-integrating Rogowski coil) sensors are indigenously developed. The experiments are performed by applying few 100 KV with few tens of nanosecond pulse under uniform...
Go to contribution page -
SAIBAL CHATTERJEE (NERIST, Deemed University)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
ABSTRACT:
Go to contribution page
Pulse Transformers are used in pulse power generating system when Output Voltage is to be raised, to invert the polarity and provide a DC isolation between discharging source and Load with minimum loss of energy and maximum transformation efficiency. Among different kinds of high-voltage pulse transformers, Authors have studied Pulse Transformer with closed magnetic core. Studies... -
ARIJIT BASURAY (NEO TELE-TRONIX PVT. LTD)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Arijit Basuray1, Saibal Chatterjee2
1.NEO TELE-TRONIX PVT. LTD.(NTPL), Kolkata,India email: abasuray@gmail.com 2.DEPARTMENT OF ELECTRICAL ENGINEERING, NERIST (Deemed University),Arunachal Pradesh,India email: saibalda@ieee.orgABSTRACT:
Go to contribution page
Pulsed Power in the form of Recurrent Surge Generator (RSG) can... -
Mr Weikang Zhao (Chinese Academy of Sciences)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
The efficiency of the electromagnetic launch system depends on the electromagnetic energy which is converted into the kinetic energy of the projectile. The energy loss of electromagnetic rail launch system mainly includes electromagnetic loss, friction loss and aerodynamic loss. The aerodynamic loss may reach up to 10% of the system energy, and the higher the projectile velocity, the higher...
Go to contribution page -
Weikang Zhao (Chinese Academy of Sciences)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
The surface flashover across the insulators is the major limitation of the performance for the high voltage system. Surface flashover voltage is mainly affected by the surface properties of the materials. Therefore, it has become an important technical means to improve the surface flashover voltage of insulation materials by a series of surface treatment technology. As a new material surface...
Go to contribution page -
Dr Athanasios Mermigkas (Univeristy of Strathclyde)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
The insulating level of a pulsed-power system is usually limited by the voltage that initiates flashover over the surface of its solid insulators, rather than by the bulk solid breakdown strength. Due to environmental concerns, the use of SF6 is being reduced and it is therefore imperative to investigate the surface flashover performance of various commonly used solid insulating materials, in...
Go to contribution page -
Zhao Ying (Chinese Academy of Sciences)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
Electromagnetic rail launcher (EMRL) is one of the new propulsor based on impulse discharge with high current technique. In recent years, the research of EMRL has attracted the attention of domestic and foreign institutions, such as China, the United States Navy Laboratory, the French German Joint Laboratory, and has made great progress. In order to solve the fracture problem between bus-bar...
Go to contribution page -
Dr Miguel Hinojosa (Army Research Laboratory)21/06/2017, 13:30Pulsed Power Physics and Technology, Components and HV InsulationPoster
This research details the high action pulse evaluation and corresponding modeling and simulation of a high voltage bipolar silicon carbide power device. A model of a high power bipolar device was developed in the Silvaco Atlas software to better understand the extreme electro-thermal stresses in the power device when subjected to an elevated-pulse current at a very unique time scale....
Go to contribution page
Choose timezone
Your profile timezone: