TY - JOUR
T1 - Compact explosive-driven generator of primary power based on a longitudinal shock wave demagnetization of hard ferri- and ferromagnets
AU - Shkuratov, Sergey I.
AU - Talantsev, Evgueni F.
AU - Dickens, James C.
AU - Kristiansen, Magne
N1 - Funding Information:
Manuscript received September 29, 2001; revised August 29, 2002. This work was supported by the New World Vistas Program, Air Force Office of Scientific Research (AFOSR). The authors are with the Center for Pulsed Power and Power Electronics, Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, TX 79409-3102 USA. Digital Object Identifier 10.1109/TPS.2002.806638
PY - 2002/10
Y1 - 2002/10
N2 - A new type of compact explosive-driven generator of primary power, which utilizes phenomena of a shock wave demagnetization of hard ferri- and ferromagnets, was developed. The shock wave initiated by high explosive, as well as accelerated flyer plate, passes along the hard ferri- or ferromagnetic body, which serves as initial energy carrier. The shock wave demagnetizes the energy-carrying element, reducing the initial magnetic flux Φ0. In accordance with Faraday's law, this change of magnetic flux Δ Φ0 generates an electromotive force in a coil wound on the energy carrier. Several types of compact generators with energy-carrying element of 10 cm3 in volume were explored. High-voltage generators that utilize energy of BaFe12O19 hard ferrimagnets are capable of producing pulses of amplitude 5.5 kV with full width at half maximum (FWHM) of 1 μs. The generators that utilize energy of Nd2Fe14B high-energy hard ferromagnets are capable of producing pulses with amplitude more than 10 kV and FWHM about 5 μs. The high-current generators based on Nd2Fe14B produced pulses yielded 826 A and FWHM of 180 μs. The developed generator can be used as the most reliable and effective source of primary power capable of seeding magnetocumulative generators.
AB - A new type of compact explosive-driven generator of primary power, which utilizes phenomena of a shock wave demagnetization of hard ferri- and ferromagnets, was developed. The shock wave initiated by high explosive, as well as accelerated flyer plate, passes along the hard ferri- or ferromagnetic body, which serves as initial energy carrier. The shock wave demagnetizes the energy-carrying element, reducing the initial magnetic flux Φ0. In accordance with Faraday's law, this change of magnetic flux Δ Φ0 generates an electromotive force in a coil wound on the energy carrier. Several types of compact generators with energy-carrying element of 10 cm3 in volume were explored. High-voltage generators that utilize energy of BaFe12O19 hard ferrimagnets are capable of producing pulses of amplitude 5.5 kV with full width at half maximum (FWHM) of 1 μs. The generators that utilize energy of Nd2Fe14B high-energy hard ferromagnets are capable of producing pulses with amplitude more than 10 kV and FWHM about 5 μs. The high-current generators based on Nd2Fe14B produced pulses yielded 826 A and FWHM of 180 μs. The developed generator can be used as the most reliable and effective source of primary power capable of seeding magnetocumulative generators.
KW - Hard-ferromagnetic materials
KW - Pulsed-power generation
KW - Shock waves
UR - http://www.scopus.com/inward/record.url?scp=0036826776&partnerID=8YFLogxK
U2 - 10.1109/TPS.2002.806638
DO - 10.1109/TPS.2002.806638
M3 - Article
AN - SCOPUS:0036826776
SN - 0093-3813
VL - 30
SP - 1681
EP - 1691
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 5 I
ER -