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公开(公告)号：JPH11262211A
公开(公告)日：1999-09-24
申请号：JP17198198
申请日：1998-05-15
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , OESTERHELD JOERG DR , SCHULER ROLAND
Abstract: PROBLEM TO BE SOLVED: To constitute a stator wire insulating member having a satisfactory dielectric characteristic and a heat characteristic, by setting the capacity ratio of a warp against a weft in a layer-like supporting body, and the weight ratio of micro mica against the layer-like supporting body in a mica band material to be not less than specified values which are separately decided. SOLUTION: A layer-like supporting body 4 is formed as an inorganic glass textile layer, by filling epoxy resin 8 in a space between adjacent glass threads. The capacity ratio of a warp 7a against a weft 7b is set to be larger than 2.5:1 or similar to it. The weight ratio of a mica paper layer constituted of fine mica against the layer-like supporting body 4 is set larger than 6:1 or similar to it so as to constitute a mica band material 11. Thus, the dielectric characteristic and the heat characteristic of the main insulating part of a stator wire can be improved.
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公开(公告)号：JP2000040420A
公开(公告)日：2000-02-08
申请号：JP19555599
申请日：1999-07-09
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , BJOERKLUND ANDERS , OESTERHELD JOERG
Abstract: PROBLEM TO BE SOLVED: To provide insulative material of unchanging electric particle discharge adaptable to the environment and suitable for use at a relatively high temperature and under a high voltage. SOLUTION: Electric insulative material includes an insulation layer 10 and a polymer, particularly thermoplastic resin. The insulation layer 10 has mineral which has particle size particularly not more than 20 μm and is formed in a thin plate shape, particularly a micro mica thin plate 2. The micro mica thin plates 2 are laminated so that hollow parts are formed between the micro mica thin plates 2 and are substantially in parallel to the insulation layer 10. The polymer is permanently linked with the insulation layer 10 and the hollow parts 3 of the insulation layer 10 are filled with the polymer, and thus more uniform insulative material 1 can be obtained.
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公开(公告)号：JPH11332154A
公开(公告)日：1999-11-30
申请号：JP10975499
申请日：1999-04-16
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , FRIED REINHARD , JOHO REINHARD , OESTERHELD JOERG DR
Abstract: PROBLEM TO BE SOLVED: To provide a winding bar whose maximum electric field strength at an edge region is decreased, without making the thickness of an insulator large. SOLUTION: In a winding bar 10, which is for a high-voltage winding of an electric machine especially for a stator winding, has piled-up conductors 13 whose bundle has a rectangular cross section, and is surrounded by an insulator 14 around, an electric field strength improved at edges as a whole is achieved without changing the insulator thickness. This is performed by making a thickness d2 of the insulator 14 at an edge 15 of the winding bar 10 larger than the thickness d1 of the insulator 14 at a flat surface of the winding bar 10. In this case, it is preferable that a correcting process is performed for forming the edge regions.
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4.发明专利
公开(公告)号：JP2000197300A
公开(公告)日：2000-07-14
申请号：JP37569799
申请日：1999-12-28
Applicant: ABB RESEARCH LTD
Inventor： OESTERHELD JOERG DR , GASPARINI RICO , BAUMANN THOMAS DR
IPC: B32B1/08 , F16L11/112 , H02K3/30 , H02K3/50
Abstract: PROBLEM TO BE SOLVED: To facilitate the assembly of a conductor and form a supporting section having a high ridigity in such a structure that a mechanical creep to be generated may be minimum, by covering a bundle of glass fibers with a tightly woven glass woven cloth tube and then surrounding the glass woven fabric tube with a polymer layer and another tightly woven glass woven cloth tube. SOLUTION: A bundle of glass fibers 1 is covered with a tightly woven inside glass woven fabric tube 2. Outside the inside glass woven fabric tube 2, an airtight and liquidtight flexible polymer layer 3 is formed. Then, the polymer layer 3 is covered with a tightly woven outside glass woven fabric tube 4. The polymer layer 3 is formed by extrusion molding or lacquer finish so as to cover the inside glass woven fabric tube 2. As a result, a part of a pressure tube fastened with a winding element can be completely hardened at the time of heat treatment, thereby securing a complete and excellent mechanical characteristic for a thermosetting system.
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公开(公告)号：CZ151998A3
公开(公告)日：1998-12-16
申请号：CZ151998
申请日：1998-05-15
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , OESTERHELD JORG DR , SCHULER ROLAND
Abstract: The stator winding insulation uses a mica band (11) with a carrier layer (4) provided with longitudinal and transverse threads (7a,7b), to which a layer (5) containing mica and a binder material is applied on at least one side. The volume ratio between the longitudinal threads and the transverse threads in the carrier layer is at least 2.5 : 1, the applied layer containing fine mica particles with a high packing density. The weight ratio of the mica particles to the carrier layer within the mica band is 6 or above.
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Patent Agency Ranking
公开(公告)号：DE4234311A1
公开(公告)日：1994-04-14
申请号：DE4234311
申请日：1992-10-12
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR
Abstract: Prodn. of a high temp. superconductor based on bismuth alkali-earth cuprates comprises: (a) partially melting a powdered starting material at a 1st process temp. (T1) above the melting point at an O2 partial pressure p(O2); (b) calcining at a 2nd process temp. (T2) at 830-870 deg.C at an O2 partial pressure p(O2); and (c) cooling to room temp. below 700 deg.C in inert gas atmosphere. The novelty is that partial melting at 1st process temp. (T1) is carried out in range of Tm (melting point of powdered starting material) K greater than T1 greater than Tm + 10K over a 1st process period (D1) of 1 hr. greater than D1 greater than 3 hrs. ADVANTAGE - High current density achieved.
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公开(公告)号：DE4234310A1
公开(公告)日：1994-04-14
申请号：DE4234310
申请日：1992-10-12
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , UNTERNAEHRER PETER
IPC: C04B35/00 , C04B35/45 , C04B35/50 , C04B35/622 , C04B35/65 , C04B35/653 , C30B29/22 , C30B30/00 , H01L39/24 , C04B35/64 , H01B12/00
Abstract: To achieve a critical current density jc >/= 800 A/cm in a rotationally symmetrical workpiece of a high temperature superconductor at a temperature of 77 K, a powder mixture (8) having the stoichiometric composition Bi2+xEA3Cu2Oy is used, with -0.15 /= 0.8 bar, a first long-term heat treatment at from 840@C to 850@C is carried out for from 20 to 40 hours. A second long-term heat treatment is then carried out at reduced oxygen partial pressure p(O2) and below 700@C, cooling to room temperature in a nitrogen atmosphere. A third long-term heat treatment can follow.
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公开(公告)号：DE59304353D1
公开(公告)日：1996-12-05
申请号：DE59304353
申请日：1993-08-28
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , UNTERNAEHRER PETER
IPC: C04B35/00 , C04B35/45 , C04B35/50 , C04B35/622 , C04B35/65 , C04B35/653 , C30B29/22 , C30B30/00 , H01L39/24
Abstract: To achieve a critical current density jc >/= 800 A/cm in a rotationally symmetrical workpiece of a high temperature superconductor at a temperature of 77 K, a powder mixture (8) having the stoichiometric composition Bi2+xEA3Cu2Oy is used, with -0.15 /= 0.8 bar, a first long-term heat treatment at from 840@C to 850@C is carried out for from 20 to 40 hours. A second long-term heat treatment is then carried out at reduced oxygen partial pressure p(O2) and below 700@C, cooling to room temperature in a nitrogen atmosphere. A third long-term heat treatment can follow.
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公开(公告)号：DE4434819C1
公开(公告)日：1996-01-04
申请号：DE4434819
申请日：1994-09-29
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , PAUL WILLI DR , RHYNER JAKOB DR
Abstract: In order to limit overload currents in electric lines, caused by a short circuit for instance, the invention calls for a current limiter to be inserted in the electric line to limit the overload current to a given multiple of the nominal current. The simple, compactly designed current limiter has, disposed on each side of a disc-shaped insulator (1), a composite conductor made up of a high-temperature superconductor (3, 3') and a normal conductor (4, 4') connected flat against each other to give good electrical contact. Between the composite conductors and the insulator (1) is a chemically insulating buffer layer (2) made of 2- mu m-thick silver. Either the superconductor side or the normal-conductor side of the composite conductor makes flat contact with the insulator (1). The electrical resistance of the shunt (4, 4') should not be greater than that of the superconductor (3, 3') connected to it. Each composite conductor is meander-shaped in design and electrically connected so that the current in adjacent strips of the composite conductor flows in opposite directions.
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公开(公告)号：DE4302267A1
公开(公告)日：1994-08-04
申请号：DE4302267
申请日：1993-01-28
Applicant: ABB RESEARCH LTD
Inventor： BAUMANN THOMAS DR , HOIDIS MARKUS , SCHUELER CLAUS DR
Abstract: Electroplating of a Ni or Ni-alloy metal substrate with Ag is effected to give a blister-free coating, the Ag-coated substrate undergoing annealing at 600-950 deg.C in an atmos. from which O2 is excluded.Also claimed is a smelting device of the prodn. of metal oxide-contg. melts, esp. in the mfr. of high temp. superconductors, comprising fo a Ni or Ni-alloy substrate with an Ag coating applied by the claimed process.Pref. Ag-coated metal substrate undergoes annealing at 800-900 deg.C in an inert gas atmos. or an atmos. from which O2 is excluded, at an O2-partial pressure of below 10 Pa, pref. belo1 1 pa and for a period of 0.1-10 hours, pref. 1-3 hours.
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