Previously (1998), the authors reported on the operation and limitations of a six-point star gate design 125 mm thyristor pulsed power switch. An involute gate design has been developed that provides a significant increase in its ability to handle higher peak currents and di/dts. For this study, they selected a 2.5 kV symmetric version of the device. The test facility uses a 10 m/spl Omega/ PFN with a rectangular pulse width (FWHM) of 465 /spl mu/s. All tests were performed with an essentially shorted load in order to achieve 200 kA operation and to instantaneously apply a full voltage reversal in less than 3 /spl mu/S at the end of the current pulse. Reliable operation was demonstrated at 2.6 kV forward voltage with a reverse voltage of 2.3 kV. The peak current was 203 kA with a di/dt of 1.8 kA//spl mu/s. The charge was 82 C and the action was 13.8 MA/sup 2/s. The reverse charge was 0.19 C. The PFN was modified to reduce the impedance and simulate a sinusoidal pulse in excess of 1 kHz. Reliable operation was obtained at 221 kA with a di/dt at 2.0 kA//spl mu/s. The pulse width (FWHM) was 301 /spl mu/s. With a base width of 455 /spl mu/s. Forward voltage was 2.4 kV with a reverse voltage of 2.3 kV. The forward charge, reverse charge and action were 63 C, 0.51 C and 10.9 MA/sup 2/s respectively. Reliable repetitive operation was performed at 151 kA with a burst of 10 pulses and a 20 second interval between pulses. No temperature effects were observed.
{"title":"Single shot and burst repetitive operation of involute gate 125 mm symmetric thyristors up to 221 kA with a di/dt of 2.0 kA//spl mu/s","authors":"T. Podlesak, F. Simon, S. Schneider","doi":"10.1109/PPC.1999.825448","DOIUrl":"https://doi.org/10.1109/PPC.1999.825448","url":null,"abstract":"Previously (1998), the authors reported on the operation and limitations of a six-point star gate design 125 mm thyristor pulsed power switch. An involute gate design has been developed that provides a significant increase in its ability to handle higher peak currents and di/dts. For this study, they selected a 2.5 kV symmetric version of the device. The test facility uses a 10 m/spl Omega/ PFN with a rectangular pulse width (FWHM) of 465 /spl mu/s. All tests were performed with an essentially shorted load in order to achieve 200 kA operation and to instantaneously apply a full voltage reversal in less than 3 /spl mu/S at the end of the current pulse. Reliable operation was demonstrated at 2.6 kV forward voltage with a reverse voltage of 2.3 kV. The peak current was 203 kA with a di/dt of 1.8 kA//spl mu/s. The charge was 82 C and the action was 13.8 MA/sup 2/s. The reverse charge was 0.19 C. The PFN was modified to reduce the impedance and simulate a sinusoidal pulse in excess of 1 kHz. Reliable operation was obtained at 221 kA with a di/dt at 2.0 kA//spl mu/s. The pulse width (FWHM) was 301 /spl mu/s. With a base width of 455 /spl mu/s. Forward voltage was 2.4 kV with a reverse voltage of 2.3 kV. The forward charge, reverse charge and action were 63 C, 0.51 C and 10.9 MA/sup 2/s respectively. Reliable repetitive operation was performed at 151 kA with a burst of 10 pulses and a 20 second interval between pulses. No temperature effects were observed.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"47 1","pages":"206-209 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84777858","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}
The development of voltage and current probes for measuring an electron beam's current and position associated with several microsecond-long pulses from advanced linear induction accelerators requires a precision pulser that can deliver both high voltages and high currents to a diagnostics test line. Seven-stage, type-E PFNs have been utilized in both a transformer and 4-stage Marx (plus/minus) configuration. The resulting 50-ohm pulser delivers to the test line a repeatable 100 kV, /spl sim/2 /spl mu/s flat-top (/spl plusmn/1%), 2.5 /spl mu/s FWHM pulse with a rise time of 500 ns and 175 ns for the transformer and Marx options, respectively. Methods of reducing the rise time for both options are discussed and modeled. The coaxial test line is insulated at up to two atmospheres with SF/sub 6/ and includes two transition regions to hold and test different diameter beam current and position monitors (BPMs). The center conductor incorporates both translation and tip/tilt with an accuracy of 100 /spl mu/m. Finally, the line is terminated in a matched radial resistor that provides a planar region at fields up to 40 kV/cm for the testing of voltage probes. Both the transformer and Marx options are modeled and compared to experimental results.
{"title":"A 100-kV, 2-kA, 2.5-/spl mu/S pulser for developing and calibrating long-pulse diagnostics","authors":"R. Carlson","doi":"10.1109/PPC.1999.823798","DOIUrl":"https://doi.org/10.1109/PPC.1999.823798","url":null,"abstract":"The development of voltage and current probes for measuring an electron beam's current and position associated with several microsecond-long pulses from advanced linear induction accelerators requires a precision pulser that can deliver both high voltages and high currents to a diagnostics test line. Seven-stage, type-E PFNs have been utilized in both a transformer and 4-stage Marx (plus/minus) configuration. The resulting 50-ohm pulser delivers to the test line a repeatable 100 kV, /spl sim/2 /spl mu/s flat-top (/spl plusmn/1%), 2.5 /spl mu/s FWHM pulse with a rise time of 500 ns and 175 ns for the transformer and Marx options, respectively. Methods of reducing the rise time for both options are discussed and modeled. The coaxial test line is insulated at up to two atmospheres with SF/sub 6/ and includes two transition regions to hold and test different diameter beam current and position monitors (BPMs). The center conductor incorporates both translation and tip/tilt with an accuracy of 100 /spl mu/m. Finally, the line is terminated in a matched radial resistor that provides a planar region at fields up to 40 kV/cm for the testing of voltage probes. Both the transformer and Marx options are modeled and compared to experimental results.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"24 3 1","pages":"1429-1432 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91249117","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}
Albeit far from maturity, inductive storage is a promising technology for electromagnetic launchers. A system comprising a railgun coupled to an inductive storage power supply is analyzed again in this paper. An analytical nondimensional treatment of the lossless case is given, readily allowing the assessment of the performance limits of such a system. A lossy system has been analyzed numerically. A conclusion is drawn that, at the discharge process, the coil losses are of minor importance compared to the rail losses.
{"title":"To the theory of parallel railgun driven by an inductive storage power supply","authors":"A. Pokryvailo","doi":"10.1109/PPC.1999.823776","DOIUrl":"https://doi.org/10.1109/PPC.1999.823776","url":null,"abstract":"Albeit far from maturity, inductive storage is a promising technology for electromagnetic launchers. A system comprising a railgun coupled to an inductive storage power supply is analyzed again in this paper. An analytical nondimensional treatment of the lossless case is given, readily allowing the assessment of the performance limits of such a system. A lossy system has been analyzed numerically. A conclusion is drawn that, at the discharge process, the coil losses are of minor importance compared to the rail losses.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"10 17 1","pages":"1345-1348 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80645187","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}
Magneto-cumulative generators are high-power sources of magnetic energy pulses. Duration and shape of the pulses, created by these generators lies in a rather narrow range, which is determined by detonation velocity of the most powerful high explosive substances, used in these generators. Different schemes and device for generator parameters agreement with load parameters are used for formation of current pulses of different shape and duration on a wide load values range. These schemes and devices include inductive coupling of generator contour with load contour, accumulation of magnetic energy, created by MCG and its commutation to the load using breaking units, which use phase transition metal-insulator at conductor temperature increase, current open switches and different types of plasma-erosion open switches. The main purpose of these schemes and devices is to create current pulse of required shape with comparable or higher power value, than developed by MCG, on the load. We describe the source of high-power energy pulses, based on MCG. Transformer energy bending from MCG, breaking units, made of electrically exploding wires, and noncontrollable sharpening discharger are used in this source.
{"title":"Magnetocumulative source of high-power pulses with double inductive energy storage","authors":"Yu. V. Vilkov, A. Kravchenko, V. Selemir","doi":"10.1109/PPC.1999.823617","DOIUrl":"https://doi.org/10.1109/PPC.1999.823617","url":null,"abstract":"Magneto-cumulative generators are high-power sources of magnetic energy pulses. Duration and shape of the pulses, created by these generators lies in a rather narrow range, which is determined by detonation velocity of the most powerful high explosive substances, used in these generators. Different schemes and device for generator parameters agreement with load parameters are used for formation of current pulses of different shape and duration on a wide load values range. These schemes and devices include inductive coupling of generator contour with load contour, accumulation of magnetic energy, created by MCG and its commutation to the load using breaking units, which use phase transition metal-insulator at conductor temperature increase, current open switches and different types of plasma-erosion open switches. The main purpose of these schemes and devices is to create current pulse of required shape with comparable or higher power value, than developed by MCG, on the load. We describe the source of high-power energy pulses, based on MCG. Transformer energy bending from MCG, breaking units, made of electrically exploding wires, and noncontrollable sharpening discharger are used in this source.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"8 1","pages":"732-734 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78246909","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}
A. Buyko, V. Zmushko, V. Mokhov, P. N. Nizovtsev, V. Solovyev, V. B. Yakubov
Due to their interaction with end current leads during implosion, high-energy cylindrical liners driven by disk EMG currents can gain considerable longitudinal asymmetry, like, for example, in the joint RF-US experiment HEL-1 (1996), which agrees with computations using various 2D techniques. This paper using 2D DRAKON and MEDUZA computations demonstrates the possibility to cardinally improve the longitudinal compression symmetry for this liner type as compared to that in HEL-1. The influence of liner geometry and strength parameters as well as ponderomotive unit end current lead parameters on the liner compression longitudinal symmetry is studied. Data is obtained which is needed for selection of the ponderomotive unit for the second potential joint VNIIEF/LANL explosive magnetic experiment (HEL-2) in order to achieve a high longitudinal symmetry of impact of the cylindrical solid liner on the target at liner velocity up to 15 km/s.
{"title":"On feasibility to achieve a high longitudinal symmetry of cylindrical metal liners compressed by currents from most powerful disk EMG","authors":"A. Buyko, V. Zmushko, V. Mokhov, P. N. Nizovtsev, V. Solovyev, V. B. Yakubov","doi":"10.1109/PPC.1999.823724","DOIUrl":"https://doi.org/10.1109/PPC.1999.823724","url":null,"abstract":"Due to their interaction with end current leads during implosion, high-energy cylindrical liners driven by disk EMG currents can gain considerable longitudinal asymmetry, like, for example, in the joint RF-US experiment HEL-1 (1996), which agrees with computations using various 2D techniques. This paper using 2D DRAKON and MEDUZA computations demonstrates the possibility to cardinally improve the longitudinal compression symmetry for this liner type as compared to that in HEL-1. The influence of liner geometry and strength parameters as well as ponderomotive unit end current lead parameters on the liner compression longitudinal symmetry is studied. Data is obtained which is needed for selection of the ponderomotive unit for the second potential joint VNIIEF/LANL explosive magnetic experiment (HEL-2) in order to achieve a high longitudinal symmetry of impact of the cylindrical solid liner on the target at liner velocity up to 15 km/s.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"44 1","pages":"1145-1148 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76049547","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}
The authors present a study of the modulation at frequencies of hundreds of MHz of an electron beam (I/sub e//spl les/30 A, E/sub e//spl les/40 keV, /spl tau//sub p//spl les/35 /spl mu/s) produced by a plasma cathode. The plasma was prepared by a noncomplete discharge that was ignited by a driving pulse applied between the front strips and a solid rear electrode of a ferroelectric sample [BaTiO/sub 3/ or Pb(Zr,Ti)O/sub 3/]. Investigation of the plasma and the beam modulation properties and their dependence on the experimental parameters is presented. The results are discussed within the framework of electrons oscillating in the potential well created by the positively charged plasma having feedback coupling with the input cable.
{"title":"High-frequency current modulation in a diode with a plasma cathode","authors":"Y. Krasik, J. Felsteiner, A. Rosenberg","doi":"10.1109/PPC.1999.823645","DOIUrl":"https://doi.org/10.1109/PPC.1999.823645","url":null,"abstract":"The authors present a study of the modulation at frequencies of hundreds of MHz of an electron beam (I/sub e//spl les/30 A, E/sub e//spl les/40 keV, /spl tau//sub p//spl les/35 /spl mu/s) produced by a plasma cathode. The plasma was prepared by a noncomplete discharge that was ignited by a driving pulse applied between the front strips and a solid rear electrode of a ferroelectric sample [BaTiO/sub 3/ or Pb(Zr,Ti)O/sub 3/]. Investigation of the plasma and the beam modulation properties and their dependence on the experimental parameters is presented. The results are discussed within the framework of electrons oscillating in the potential well created by the positively charged plasma having feedback coupling with the input cable.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"41 1","pages":"837-840 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77549273","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}
G. Li, U. Czok, A. Kalimov, M. Winkler, H. Wollnik
For the focusing of pulsed ion beams of high rigidity, new pulsed magnetic quadrupole lenses have been developed. To reach high flux densities, these quadrupole lenses were built as optimized steel-free devices. Up to now, a flux density above 12 T has been reached in a quadrupole of 22 mm aperture. This value is higher than values reached in superconducting or pulsed plasma lenses.
{"title":"Magnetic quadrupole lenses with (dB/dr)/sub max/>1000 T/m","authors":"G. Li, U. Czok, A. Kalimov, M. Winkler, H. Wollnik","doi":"10.1109/PPC.1999.823692","DOIUrl":"https://doi.org/10.1109/PPC.1999.823692","url":null,"abstract":"For the focusing of pulsed ion beams of high rigidity, new pulsed magnetic quadrupole lenses have been developed. To reach high flux densities, these quadrupole lenses were built as optimized steel-free devices. Up to now, a flux density above 12 T has been reached in a quadrupole of 22 mm aperture. This value is higher than values reached in superconducting or pulsed plasma lenses.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"26 1","pages":"1022-1024 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77558583","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}
R. Baksht, B. Kovalchuk, V. Kokshenev, N. Kurmaev, A. Labetsky, V. Oreshkin, A. Russkikh, A. Fedunin, A. Shishlov
Long time implosion experiments with argon double gas puffs have been conducted on the GIT-12 pulsed current generator at the current level of 2.2-2.4 MA. The double gas puff was used as one of the alternative ways to provide a stable implosion at long implosion time. In the experiments the implosion time was in the range from 230 to 340 ns. The results of the experiments were compared to the results of the 2D snow plow simulations. The experiments and the simulations show that the final pinch is sufficiently stable, when the inner-to-outer shell mass ratio is greater than 0.7. The maximum argon K-shell yield obtained in the experiments is equal to 740 J/cm with the radiation power of 220 GW/cm. At the long implosion times, the K-shell yield obtained in the double gas puff implosion is twice as much as the K-shell yield of 4 cm radius single gas puff with the radiation power increased more than an order of magnitude.
{"title":"Study of the mass ratio effect on double gas puff implosion dynamics","authors":"R. Baksht, B. Kovalchuk, V. Kokshenev, N. Kurmaev, A. Labetsky, V. Oreshkin, A. Russkikh, A. Fedunin, A. Shishlov","doi":"10.1109/PPC.1999.823697","DOIUrl":"https://doi.org/10.1109/PPC.1999.823697","url":null,"abstract":"Long time implosion experiments with argon double gas puffs have been conducted on the GIT-12 pulsed current generator at the current level of 2.2-2.4 MA. The double gas puff was used as one of the alternative ways to provide a stable implosion at long implosion time. In the experiments the implosion time was in the range from 230 to 340 ns. The results of the experiments were compared to the results of the 2D snow plow simulations. The experiments and the simulations show that the final pinch is sufficiently stable, when the inner-to-outer shell mass ratio is greater than 0.7. The maximum argon K-shell yield obtained in the experiments is equal to 740 J/cm with the radiation power of 220 GW/cm. At the long implosion times, the K-shell yield obtained in the double gas puff implosion is twice as much as the K-shell yield of 4 cm radius single gas puff with the radiation power increased more than an order of magnitude.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"57 1","pages":"1041-1044 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77960949","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}
E. Schamiloglu, G. Park, V. S. Soualian, C. Abdallah, Frank Hegeler
Previous accomplishments pertaining to the control of various parameters of an intense beam-driven relativistic backward wave oscillator (BWO) include maintaining a specified or desired output power over a determined frequency bandwidth, and maintaining a constant frequency over a wide range of power. This was accomplished using an iterative learning control (ILC) algorithm that yielded the appropriate input variables for the electron beam, as well as the appropriate displacement of the slow wave structure from the cutoff neck. A problem of much greater complexity is the simultaneous control of both frequency and power, involving the independent mapping of both power and frequency dependence on the two input variables: cathode voltage and slow wave structure displacement. The resultant two-variable system has been successfully implemented and tested for convergence with minimal iterations. In this paper we present an overview of our "smart tube," its development, and our most recent results.
{"title":"Advances in the control of a \"smart tube\" high power backward wave oscillator","authors":"E. Schamiloglu, G. Park, V. S. Soualian, C. Abdallah, Frank Hegeler","doi":"10.1109/PPC.1999.823649","DOIUrl":"https://doi.org/10.1109/PPC.1999.823649","url":null,"abstract":"Previous accomplishments pertaining to the control of various parameters of an intense beam-driven relativistic backward wave oscillator (BWO) include maintaining a specified or desired output power over a determined frequency bandwidth, and maintaining a constant frequency over a wide range of power. This was accomplished using an iterative learning control (ILC) algorithm that yielded the appropriate input variables for the electron beam, as well as the appropriate displacement of the slow wave structure from the cutoff neck. A problem of much greater complexity is the simultaneous control of both frequency and power, involving the independent mapping of both power and frequency dependence on the two input variables: cathode voltage and slow wave structure displacement. The resultant two-variable system has been successfully implemented and tested for convergence with minimal iterations. In this paper we present an overview of our \"smart tube,\" its development, and our most recent results.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"94 1","pages":"852-855 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78055725","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}
The paper contains the further consideration of the idea to use the rotating pulsed generator with iron-free rotor which was discussed briefly in the poster presented on the IEEE Pulsed Power Conference 1997 and in the poster of 8th EML 1997, both not published. The estimations made previously with application of both mathematic simulation and measurements on the small laboratory model have yielded low coefficient of total inductance variation (on the level 10-15 instead of 300-400 and more for completely iron machines). Now the modeling of a bigger sample of generator is done with the following dimensions: rotor diameter 0.25 m, active length 0.425 m and rotation frequency 6000 rpm. The results have enabled the possibility to reach the value of this coefficient near 120 at the increased density of initial magnetic energy for excitation in the space occupied by the rotor, equal to 1.6 MJ/m/sup 3/, and increased volume of the excitation field. The output energy in the ohmic load of the generator considered is equal to 2.14 MJ, what is near 34% of peak total magnetic energy.
{"title":"The parameters and energy amplification of compression generator with iron-free rotor defined by the magnetic field simulation","authors":"V. Chemerys, Y. Vaskovsky","doi":"10.1109/PPC.1999.825504","DOIUrl":"https://doi.org/10.1109/PPC.1999.825504","url":null,"abstract":"The paper contains the further consideration of the idea to use the rotating pulsed generator with iron-free rotor which was discussed briefly in the poster presented on the IEEE Pulsed Power Conference 1997 and in the poster of 8th EML 1997, both not published. The estimations made previously with application of both mathematic simulation and measurements on the small laboratory model have yielded low coefficient of total inductance variation (on the level 10-15 instead of 300-400 and more for completely iron machines). Now the modeling of a bigger sample of generator is done with the following dimensions: rotor diameter 0.25 m, active length 0.425 m and rotation frequency 6000 rpm. The results have enabled the possibility to reach the value of this coefficient near 120 at the increased density of initial magnetic energy for excitation in the space occupied by the rotor, equal to 1.6 MJ/m/sup 3/, and increased volume of the excitation field. The output energy in the ohmic load of the generator considered is equal to 2.14 MJ, what is near 34% of peak total magnetic energy.","PeriodicalId":11209,"journal":{"name":"Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)","volume":"116 1","pages":"437-440 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1999-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77086714","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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