Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4652383
J. Swegle, J. Benford
In this paper, we describe the expert-system code HEIMDALL, which is used to model full high-power microwave systems using over 60 systems-engineering models, developed in the course of over a decade, that describe the prime and pulsed power, microwave sources, antennas, platforms, and propagation. We show an example of our calculations of the mass of a Supersystem producing 500-MW, 15-ns output pulses in the X band for bursts of 1 s, interspersed with 10-s interburst periods.
{"title":"End-to-end modeling with the HEIMDALL code to scope high-power microwave systems","authors":"J. Swegle, J. Benford","doi":"10.1109/PPPS.2007.4652383","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4652383","url":null,"abstract":"In this paper, we describe the expert-system code HEIMDALL, which is used to model full high-power microwave systems using over 60 systems-engineering models, developed in the course of over a decade, that describe the prime and pulsed power, microwave sources, antennas, platforms, and propagation. We show an example of our calculations of the mass of a Supersystem producing 500-MW, 15-ns output pulses in the X band for bursts of 1 s, interspersed with 10-s interburst periods.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129720327","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4651979
S. I. Tkachenko, D. Barishpoltsev, G. V. Ivanenkov, V. Romanova, A. E. Ter-Oganesyan, A. R. Mingaleev, T. Shelkovenko, S. Pikuz
The structure of the discharge channel upon nanosecond wire explosion has been studied using laser Schlieren probing. Wires of 25 μm diameter and 12 mm length were exploded in air and vacuum by 10 kA current pulse having a 50 A/ns rise time. The development of shock waves in the air was observed. The propagation of shock waves was analyzed using a simple model of flat piston. It became possible to draw conclusions the dislocation of the flow of the main part of the current in the volume of the discharge channel. This permitted to distinguish two scenarios of development of secondary breakdown of the interelectrode gap. The scenario (shunting or internal) in accordance with which secondary breakdown develops in each concrete case depends to a large extent on the properties of the material of the exploding conductor.
采用激光纹影探测技术研究了纳秒线爆炸放电通道的结构。将直径为25 μm、长度为12 mm的导线在空气和真空中以上升时间为50 a /ns的10 kA电流脉冲爆炸。观察了空气中激波的发展。采用扁平活塞的简单模型对激波的传播进行了分析。可以得出放电通道体积中主要部分电流的流动错位的结论。这可以区分电极间隙二次击穿的两种发展情况。在每种具体情况下，二次击穿发生的情况(分流或内部)在很大程度上取决于爆炸导体材料的性质。
{"title":"Different mechanisms of shock wave generation and scenarios of second breakdown development upon electrical explosion of wires","authors":"S. I. Tkachenko, D. Barishpoltsev, G. V. Ivanenkov, V. Romanova, A. E. Ter-Oganesyan, A. R. Mingaleev, T. Shelkovenko, S. Pikuz","doi":"10.1109/PPPS.2007.4651979","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4651979","url":null,"abstract":"The structure of the discharge channel upon nanosecond wire explosion has been studied using laser Schlieren probing. Wires of 25 μm diameter and 12 mm length were exploded in air and vacuum by 10 kA current pulse having a 50 A/ns rise time. The development of shock waves in the air was observed. The propagation of shock waves was analyzed using a simple model of flat piston. It became possible to draw conclusions the dislocation of the flow of the main part of the current in the volume of the discharge channel. This permitted to distinguish two scenarios of development of secondary breakdown of the interelectrode gap. The scenario (shunting or internal) in accordance with which secondary breakdown develops in each concrete case depends to a large extent on the properties of the material of the exploding conductor.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128680933","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4346279
B. Bures, M. Krishnan, P. Coleman, J. Thompson, K. Champagne, K. Wilson, A. Bixler
The scaling of x-ray output with (stored energy)2 and ∼10ns radiation pulse width of the dense plasma focus make it an interesting source of soft x-ray radiation for lithography, biological imaging, nano imaging or soft x-ray diagnostic calibration. AASC was funded by DTRA to explore soft x-ray diagnostic calibration*. In this follow-on study, we explore an alternative electrode configuration with Ar. The soft x-radiation (≫1 keV) yield, radiation pulse width and debris are characterized for our 500J dense plasma focus over 100’s of pulses fired at 0.2 Hz. The radiation yield is compared with (current)4 scaling. A soft x-ray spectrometer is installed to examine the soft x-ray spectrum.
{"title":"Characterization of a 500J dense plasma focus for producing soft x-rays","authors":"B. Bures, M. Krishnan, P. Coleman, J. Thompson, K. Champagne, K. Wilson, A. Bixler","doi":"10.1109/PPPS.2007.4346279","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346279","url":null,"abstract":"The scaling of x-ray output with (stored energy)2 and ∼10ns radiation pulse width of the dense plasma focus make it an interesting source of soft x-ray radiation for lithography, biological imaging, nano imaging or soft x-ray diagnostic calibration. AASC was funded by DTRA to explore soft x-ray diagnostic calibration*. In this follow-on study, we explore an alternative electrode configuration with Ar. The soft x-radiation (≫1 keV) yield, radiation pulse width and debris are characterized for our 500J dense plasma focus over 100’s of pulses fired at 0.2 Hz. The radiation yield is compared with (current)4 scaling. A soft x-ray spectrometer is installed to examine the soft x-ray spectrum.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128736180","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4346175
R. Edwards, M. Giesselmann
Nano-crystalline ferro-magnetic core material has very favorable magnetic properties for high frequency power applications. This paper investigates the properties of a nano-crystalline transformer with multiple secondary windings through experimental evaluation over a range of frequencies. Design considerations are addressed with special attention focused on scaling with respect to frequency, cores losses, and effective AC resistance of the windings. The data derived from the experimental evaluation helps determine a transformer optimal design for the best power density.
{"title":"Characterization of a high power nanocrystalline transformer","authors":"R. Edwards, M. Giesselmann","doi":"10.1109/PPPS.2007.4346175","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346175","url":null,"abstract":"Nano-crystalline ferro-magnetic core material has very favorable magnetic properties for high frequency power applications. This paper investigates the properties of a nano-crystalline transformer with multiple secondary windings through experimental evaluation over a range of frequencies. Design considerations are addressed with special attention focused on scaling with respect to frequency, cores losses, and effective AC resistance of the windings. The data derived from the experimental evaluation helps determine a transformer optimal design for the best power density.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129700842","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4652493
E. Spencer, S. Patra, T. Andriyas, C. Swenson, J. Ward
Sweeping frequency plasma impedance probes have been flown on recent sounding rocket missions and also on the International Space Station. These plasma impedance probes have been used to 1) Characterize the low latitude ionosphere. 2) Study the descending layers in the E-region. 3) Measure the electron temperature, density, and electron-neutral collision frequency within mid-latitude spread F and 4) Measure the ambient plasma properties around the international Space Station. The impedance of the electrically short monopole, dipole or patch antenna used in these missions is determined by generating sweeps of radio frequency voltages between 200 kHz and 20 MHz as the spacecraft travels through the ionospheric layers and measuring the current at the probe input terminals. The impedance data is analyzed using a Plasma Fluid Finite Difference Time Domain (PF-FDTD) model developed at the Utah State University. In this study, the results of the PF-FDTD simulations are compared with the measured data obtained from the Sudden Atomic Layer (SAL) mission, which was launched as a part of the COQUI II campaign from Puerto Rico on 19th February, 1998 at 2009 LT. The parameters that were to be determined were the electron plasma frequency, electron gyro frequency and the ambient magnetic field in the altitude range of 90 – 115 Kms.
{"title":"Plasma impedance probe analysis with a finite difference time domain simulation","authors":"E. Spencer, S. Patra, T. Andriyas, C. Swenson, J. Ward","doi":"10.1109/PPPS.2007.4652493","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4652493","url":null,"abstract":"Sweeping frequency plasma impedance probes have been flown on recent sounding rocket missions and also on the International Space Station. These plasma impedance probes have been used to 1) Characterize the low latitude ionosphere. 2) Study the descending layers in the E-region. 3) Measure the electron temperature, density, and electron-neutral collision frequency within mid-latitude spread F and 4) Measure the ambient plasma properties around the international Space Station. The impedance of the electrically short monopole, dipole or patch antenna used in these missions is determined by generating sweeps of radio frequency voltages between 200 kHz and 20 MHz as the spacecraft travels through the ionospheric layers and measuring the current at the probe input terminals. The impedance data is analyzed using a Plasma Fluid Finite Difference Time Domain (PF-FDTD) model developed at the Utah State University. In this study, the results of the PF-FDTD simulations are compared with the measured data obtained from the Sudden Atomic Layer (SAL) mission, which was launched as a part of the COQUI II campaign from Puerto Rico on 19th February, 1998 at 2009 LT. The parameters that were to be determined were the electron plasma frequency, electron gyro frequency and the ambient magnetic field in the altitude range of 90 – 115 Kms.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123920851","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4345680
T. Williams, S. Clough
At AWE, pulsed-power machines are routinely used to drive electron-beam diodes for flash X-ray radiographic applications in the 1–10 MV range. Some diode types are sensitive to relatively low levels of pre-pulse voltage, during the pulse-forming line (PFL) charging phase, due to small anode-cathode gaps and geometries that enhance electric fields. This results in electron emission prior to the main pulse, which alters conditions in the anode-cathode gap preventing proper diode operation. Limiting the pre-pulse voltage at the diode to below the emission level is therefore crucial.
{"title":"Pre-pulse minimisation on Blumlein-based X-ray machines by optimisation of balance circuit parameters","authors":"T. Williams, S. Clough","doi":"10.1109/PPPS.2007.4345680","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345680","url":null,"abstract":"At AWE, pulsed-power machines are routinely used to drive electron-beam diodes for flash X-ray radiographic applications in the 1–10 MV range. Some diode types are sensitive to relatively low levels of pre-pulse voltage, during the pulse-forming line (PFL) charging phase, due to small anode-cathode gaps and geometries that enhance electric fields. This results in electron emission prior to the main pulse, which alters conditions in the anode-cathode gap preventing proper diode operation. Limiting the pre-pulse voltage at the diode to below the emission level is therefore crucial.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121504840","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4345674
M. Domonkos, J. O'Loughlin, T. Tran, P. Turchi, Darwin Brown, C. W. Gregg, J. Parker, T. Montoya, K. Slenes
The stacked Blumlein line is a concept that has been touted as a highly compact pulsed power system because it combines the functions of energy storage, voltage scaling, and pulse shaping into a single sub-system. As a result, two single stage Blumlein lines have been fabricated and tested using a polymer-ceramic composite dielectric. Examination of the breakdown of the dielectric near the DC voltage specification led to the understanding of the degree of voltage reversal experienced by the lines. Voltage reversal is compounded in a stacked arrangement. The voltage reversal and transients induced by the switch jitter in a stacked configuration require significant derating of the dielectric strength. Consequently, the system must be operated much below the intrinsic dielectric energy density, compromising efforts to design a compact pulsed power system. This paper presents the conclusion that for derating below 0.72, as is likely necessary, a stacked Blumlein line will contain more dielectric than a comparable stacked transmission line.
{"title":"Stacked, parallel-plate solid-dielectric Blumlein lines for compact pulsed power","authors":"M. Domonkos, J. O'Loughlin, T. Tran, P. Turchi, Darwin Brown, C. W. Gregg, J. Parker, T. Montoya, K. Slenes","doi":"10.1109/PPPS.2007.4345674","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345674","url":null,"abstract":"The stacked Blumlein line is a concept that has been touted as a highly compact pulsed power system because it combines the functions of energy storage, voltage scaling, and pulse shaping into a single sub-system. As a result, two single stage Blumlein lines have been fabricated and tested using a polymer-ceramic composite dielectric. Examination of the breakdown of the dielectric near the DC voltage specification led to the understanding of the degree of voltage reversal experienced by the lines. Voltage reversal is compounded in a stacked arrangement. The voltage reversal and transients induced by the switch jitter in a stacked configuration require significant derating of the dielectric strength. Consequently, the system must be operated much below the intrinsic dielectric energy density, compromising efforts to design a compact pulsed power system. This paper presents the conclusion that for derating below 0.72, as is likely necessary, a stacked Blumlein line will contain more dielectric than a comparable stacked transmission line.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124082020","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4346186
J. Krile, A. Neuber, H. Krompholz
Undesired surface flashover of high voltage support structure can severely limit the compactness of open air high voltage systems. Only recently, increased effort has been invested in characterizing and quantifying the physical processes involved in surface flashover occurring under atmospheric conditions and under the influence of UV illumination. Presently, UV flash lamps as well as a solid-state UV source, for their much faster turn-off times, are utilized in conjunction with a high temporal resolution testing apparatus. The UV pulse, voltage, current and flashover self luminosity will be measured with high temporal precision. A simple model that describes the observed behavior as well as a more advanced analysis utilizing a Monte Carlo type code for the electron collision dynamics will be presented.
{"title":"Effects of UV illumination on surface flashover under pulsed unipolar excitation","authors":"J. Krile, A. Neuber, H. Krompholz","doi":"10.1109/PPPS.2007.4346186","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346186","url":null,"abstract":"Undesired surface flashover of high voltage support structure can severely limit the compactness of open air high voltage systems. Only recently, increased effort has been invested in characterizing and quantifying the physical processes involved in surface flashover occurring under atmospheric conditions and under the influence of UV illumination. Presently, UV flash lamps as well as a solid-state UV source, for their much faster turn-off times, are utilized in conjunction with a high temporal resolution testing apparatus. The UV pulse, voltage, current and flashover self luminosity will be measured with high temporal precision. A simple model that describes the observed behavior as well as a more advanced analysis utilizing a Monte Carlo type code for the electron collision dynamics will be presented.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128064903","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}
K. Takaki, K. Kanesawa, S. Mukaigawa, T. Fujiwara, T. Go
Influence of streamer-to-glow transition on NO removal from a simulated diesel exhaust gas in non-thermal plasma reactor is described in this paper. A co-axial cylinder type discharge chamber was used as the pulse streamer discharge non-thermal plasma reactor which was driven by inductive energy storage pulse power generator with fast recovery diode as a semiconductor opening switch. The pulsed power generator supplies 30 kV pulse with 300 pps repetition rate. The co-axial cylinder plasma reactor consists of 1 mm diameter tungsten wire and 19 mm i.d. copper tube with 30 cm length. NO removal from the simulated gas (N2:O2=9:1, Initial NO concentration=200 ppm) increased with input energy into the reactor. The energy efficiency for NO removal was obtained to be 25 g/kWh at 30 % removal in gas flow rate of 2 L/min. However, the energy efficiency decreased to 5 g/kWh with increasing capacitance of the primary capacitor from several hundreds pF to several nF. This decrease was caused by a streamer-to-glow transition.
{"title":"Influence of streamer-to-glow transition in NOx removal using pulsed power generator with SOS diodes","authors":"K. Takaki, K. Kanesawa, S. Mukaigawa, T. Fujiwara, T. Go","doi":"10.1541/IEEJFMS.127.165","DOIUrl":"https://doi.org/10.1541/IEEJFMS.127.165","url":null,"abstract":"Influence of streamer-to-glow transition on NO removal from a simulated diesel exhaust gas in non-thermal plasma reactor is described in this paper. A co-axial cylinder type discharge chamber was used as the pulse streamer discharge non-thermal plasma reactor which was driven by inductive energy storage pulse power generator with fast recovery diode as a semiconductor opening switch. The pulsed power generator supplies 30 kV pulse with 300 pps repetition rate. The co-axial cylinder plasma reactor consists of 1 mm diameter tungsten wire and 19 mm i.d. copper tube with 30 cm length. NO removal from the simulated gas (N2:O2=9:1, Initial NO concentration=200 ppm) increased with input energy into the reactor. The energy efficiency for NO removal was obtained to be 25 g/kWh at 30 % removal in gas flow rate of 2 L/min. However, the energy efficiency decreased to 5 g/kWh with increasing capacitance of the primary capacitor from several hundreds pF to several nF. This decrease was caused by a streamer-to-glow transition.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121958990","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}
Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4346039
J. Choi, T. Nagano, T. Namihira, T. Sakugawa, S. Katsuki, H. Akiyama
A low inductance circuit has been fabricated in order to obtain shorter time to saturation during core unsaturation and current pulses with shorter widths during core saturation. B-H curves have been derived from the measured voltage and current waveforms. Characteristics of the magnetic core for pulsed-power generators have been investigated and the Electromagnetic Transient Program (EMTP) simulation has been carried out in order to determine the effects of leakage current on the energy efficiency of a 3-staged magnetic pulse compressor (MPC). As results, the unsaturated and saturated permeability were obtained from the derived B-H curves. And, it is found that μun increases with time to saturation and that μsat is strongly influenced by the stray inductances of the core. By applying custom characteristics to each stage in EMTP simulation, more practical energy transfer in MPC is obtained.
{"title":"Application of derived characteristics of magnetic cores to 3-staged MPC simulation","authors":"J. Choi, T. Nagano, T. Namihira, T. Sakugawa, S. Katsuki, H. Akiyama","doi":"10.1109/PPPS.2007.4346039","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346039","url":null,"abstract":"A low inductance circuit has been fabricated in order to obtain shorter time to saturation during core unsaturation and current pulses with shorter widths during core saturation. B-H curves have been derived from the measured voltage and current waveforms. Characteristics of the magnetic core for pulsed-power generators have been investigated and the Electromagnetic Transient Program (EMTP) simulation has been carried out in order to determine the effects of leakage current on the energy efficiency of a 3-staged magnetic pulse compressor (MPC). As results, the unsaturated and saturated permeability were obtained from the derived B-H curves. And, it is found that μun increases with time to saturation and that μsat is strongly influenced by the stray inductances of the core. By applying custom characteristics to each stage in EMTP simulation, more practical energy transfer in MPC is obtained.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121633361","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}
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