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ENABLING PULSED POWER TECHNOLOGIES FOR THE
GENERATION OF INTENSE, NANOSECOND ELECTRIC FIELDS
by
Jason M. Sanders
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Particular Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
August 2011
Copyright 2011 Jason M. Sanders
Object Description
| Title | Enabling pulsed power technologies for the generation of intense, nanosecond electric fields |
| Author | Sanders, Jason M. |
| Author email | jmsander@usc.edu;jason.m.sanders@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2011-06-08 |
| Date submitted | 2011-07-14 |
| Date approved | 2011-07-15 |
| Restricted until | 2011-07-15 |
| Date published | 2011-07-15 |
| Advisor (committee chair) | Gundersen, Martin A. |
| Advisor (committee member) |
Prata, Aluizio Shung, Koping K. |
| Abstract | This dissertation focuses on the design and implementation of pulsed power systems with an emphasis on systems that generate high peak powers on nanosecond and subnanosecond timescales. These systems are an enabling technology for many areas of scientific research focused on the effects of intense, nanosecond pulsed electric fields or pulsed discharges on physical processes. Researchers at USC use these systems in a variety of diverse application areas, including research into ignition and combustion using nanosecond discharges, research into the effects of pulsed electric fields on biological systems, and research into the efficacy of cold plasma discharges for disinfection. Each of these applications has its own set of pulsed power parameters, and in most cases these parameters necessitate that the systems be custom developed. ❧ The bulk of what follows will address the design methodologies, materials, and implementation techniques required for systems capable of generating high current (20 – 500 Amperes), high voltage (1 kV – 100 kV), nanosecond pulses. These principles culminate in the presentation of a new, compact, solid state architecture, which has been implemented into a system called the Rapid Pulser. This architecture uses diode opening switches at the output to switch inductively stored energy into a resistive load. To switch properly, these diodes must be pumped in the forward and reverse directions by a current, and this new architecture introduces a pumping circuit that significantly improves pulse shape as well as reduces amplitude jitter, time jitter, complexity, cost, and size. At 1.6 kg, this is the lightest pulsed power system developed at USC’s Pulsed Power Lab, which is significant because minimizing size and weight is necessary for applications focused on the ignition and combustion of fuels. ❧ A summary of research focused on magnetic and dielectric materials for nonlinear energy compression will also be presented. Nonlinearities inherent to ferro- and ferromagnetic materials and well as ferroelectric materials can be used for a number of energy compression techniques, including magnetic pulse compression, electromagnetic shockwave generation, and soliton formation. Research into a number of different materials has resulted in the development of ferrite based electromagnetic shocklines that can reduces rise times of tens of nanoseconds down to hundreds of picoseconds. These shocklines, as well as dispersive, nonlinear lines designed for soliton formation, will be discussed in detail. A significant outcome of this work has been the development of a shockline designed to integrate with the Rapid Pulser to produce high voltage subnanosecond rise times, which are useful for a number of research areas. The line, which is less than 30 cm long, can be placed inside the pulse generator’s enclosure resulting in a contained system capable of outputting high voltage, subnanosecond rise times into 50 Ω loads. |
| Keyword | pulsed power; nanosecond pulsed electric fields; high voltage; high current; nanosecond pulses; pulsed electric fields; pulsed plasma; plasma; nanosecond discharge; discharge; bioelectric |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Sanders, Jason M. |
| Access conditions | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@usc.edu |
| Archival file | uscthesesreloadpub_Volume71/etd-SandersJas-91.pdf |
Description
| Title | Page 1 |
| Contributing entity | University of Southern California |
| Full text | ENABLING PULSED POWER TECHNOLOGIES FOR THE GENERATION OF INTENSE, NANOSECOND ELECTRIC FIELDS by Jason M. Sanders A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Particular Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) August 2011 Copyright 2011 Jason M. Sanders |
