Magnetization properties for Gd–Ba–Cu–O bulk superconductors with a couple of pulsed-field vortex-type coils

Ida, Tetsuya; Matsuzaki, H.; Akita, Yukio; Izumi, Mitsuru; Sugimoto, H.; Hondou, Y.; Kimura, Yosuke; Sakai, Naomichi; Nariki, S.; Hirabayashi, I.; Miki, M.; Murakami, Masato; Kitano, Masahiko

doi:10.1016/j.physc.2003.12.082

Cited by 64 publications

(50 citation statements)

References 6 publications

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“…However, there exists inhomogeneous field density distribution on each bulk. This is coming from a motion of flux during the pulsed magnetization process as indicated by Ida [3].…”

Section: B Twinned Rotor Type and Single Rotor Type Machinesmentioning

confidence: 99%

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Mechanical and cryogenic design of a synchronous rotating machines with HTS pole-field magnets

Matsuzaki

Kimura

Ohtani

et al. 2006

2006 IEEE Power Engineering Society General Meeting

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We studied a high-temperature superconducting (HTS) synchronous motor assembled with melt-textured Gd-BaCu-O bulk pole-field magnets. The structure of a HTS motor is an axial gap type with neither brushes/slip rings nor iron core. The specific feature is that the rotor pole-field magnets of bulk are magnetized with pulsed current flow through vortex-type armature copper windings. The rotor pole bulks and armature coils are separately cooled down with liquid nitrogen. Cooling and magnetization of bulk pole field magnets are performed inside of the rotor. In order to attain high output as well as torque, single rotor plate with 8 bulks was substituted with a twinned rotor plate assembly with 16 bulks into triple layer armature units. In addition, we mention a possible larger scaled machine with exchange of a bulk with a multilayered double pancake coil (DPC) with Bi-2223 wire. The test product of this type of DPC showed up to 1.98 T at the centre of the coil surface at 30 K.Index Terms-HTS motor, Gd-Ba-Cu-O bulk, pulse magnetization, double pan-cake coil with Bi-2223 wire

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“…However, there exists inhomogeneous field density distribution on each bulk. This is coming from a motion of flux during the pulsed magnetization process as indicated by Ida [3].…”

Section: B Twinned Rotor Type and Single Rotor Type Machinesmentioning

confidence: 99%

“…The bulk magnets are magnetized without connecting current leads like in the HTS wire winding coils. To magnetize a bulk, we have successfully designed a pulsed field magnetization technique of HTS bulk with a pair of vortex-type copper armature coils [2,3]. Recently, we have constructed a HTS bulk synchronous motor.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and cryogenic design of a synchronous rotating machines with HTS pole-field magnets

Matsuzaki

Kimura

Ohtani

et al. 2006

2006 IEEE Power Engineering Society General Meeting

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show abstract

“…Moreover, the solenoidtype coil has to include the bulk inner space, which means that we need a considerable space to put the solenoid in addition to the bulk itself. On the other hand, in 2002, we suggested the PFM using a split-type of vortex-type coil [3]. The generated B vectors become strictly parallel to the c-axis of the Gd123 bulk and the flux density distribution is conical shape which provides an advantage of avoiding invasion of excess flux inside the bulk.…”

Section: Introductionmentioning

confidence: 99%

Single pulsed field magnetization for a Gd–Ba–Cu–O high-temperature superconductor large bulk with a diameter of 140 mm

Yamaguchi

Kimura

Izumi

et al. 2008

Materials Science and Engineering: B

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“…High-T c bulk superconductors LREBa 2 Cu 3 O 7-δ (LRE123, LRE: light rare earth, Nd, Gd, Sm, Eu) has been widely studied due to engineering applications [1,2]. Second phase RE 2 BaCuO 5 (RE211) particles, and associated defects are responsible for flux pinning.…”

Section: Introductionmentioning

confidence: 99%

High performance of air-processed GdBa₂Cu₃O_7-δsuperconductors with fined Gd₂BaCuO₅and Gd₂Ba₄CuMoO_xadditions

Xu¹,

Hu²,

Sakai³

et al. 2006

J. Phys.: Conf. Ser.

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Magnetization properties for Gd–Ba–Cu–O bulk superconductors with a couple of pulsed-field vortex-type coils

Cited by 64 publications

References 6 publications

Mechanical and cryogenic design of a synchronous rotating machines with HTS pole-field magnets

Mechanical and cryogenic design of a synchronous rotating machines with HTS pole-field magnets

Single pulsed field magnetization for a Gd–Ba–Cu–O high-temperature superconductor large bulk with a diameter of 140 mm

High performance of air-processed GdBa₂Cu₃O_7-δsuperconductors with fined Gd₂BaCuO₅and Gd₂Ba₄CuMoO_xadditions

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Magnetization properties for Gd–Ba–Cu–O bulk superconductors with a couple of pulsed-field vortex-type coils

Cited by 64 publications

References 6 publications

Mechanical and cryogenic design of a synchronous rotating machines with HTS pole-field magnets

Mechanical and cryogenic design of a synchronous rotating machines with HTS pole-field magnets

Single pulsed field magnetization for a Gd–Ba–Cu–O high-temperature superconductor large bulk with a diameter of 140 mm

High performance of air-processed GdBa2Cu3O7-δsuperconductors with fined Gd2BaCuO5and Gd2Ba4CuMoOxadditions

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High performance of air-processed GdBa₂Cu₃O_7-δsuperconductors with fined Gd₂BaCuO₅and Gd₂Ba₄CuMoO_xadditions