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WO2007036430A1 - Procede et dispositif de transmission d'energie par induction a des bobines d'excitation supraconductrices d'une machine electrique - Google Patents

Procede et dispositif de transmission d'energie par induction a des bobines d'excitation supraconductrices d'une machine electrique Download PDF

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Publication number
WO2007036430A1
WO2007036430A1 PCT/EP2006/066288 EP2006066288W WO2007036430A1 WO 2007036430 A1 WO2007036430 A1 WO 2007036430A1 EP 2006066288 W EP2006066288 W EP 2006066288W WO 2007036430 A1 WO2007036430 A1 WO 2007036430A1
Authority
WO
WIPO (PCT)
Prior art keywords
transformer
transmission
polradspulen
rotating
voltage
Prior art date
Application number
PCT/EP2006/066288
Other languages
German (de)
English (en)
Inventor
Ralf Cordes
Reinhard Maier
Gerd Griepentrog
Jürgen RUPP
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2007036430A1 publication Critical patent/WO2007036430A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
    • H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
    • H02K55/04—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type with rotating field windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/03—Synchronous motors with brushless excitation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment

Definitions

  • the invention relates to a method for exciting the pole wheel of an electrical machine, wherein the pole wheel is designed to rotate.
  • the method is particularly suitable for superconducting motors or generators.
  • the invention also relates to an associated apparatus for carrying out the method.
  • HTS high-temperature superconductor
  • electrical machines operating therewith are becoming increasingly important, especially in the case of electric synchronous machines made of stator and rotor (Laufer). especially the rotor should have superconducting Polradspulen.
  • slip rings require maintenance and are subject to negligible wear. They are suitable for use in aggressive environments, e.g. Salt water, not suitable or at least must be encapsulated.
  • the object of the invention is therefore to provide suitable methods for
  • the invention thus relates to the inductive transmission of the excitation or deenergization of a rotor coil and the transmission of the necessary electrical power to or from the arranged on the rotating shaft coil. It is essential that the superconducting machine itself
  • Transmitter for transmitting the electric power to the Polradspulen in the low temperature range are.
  • the basis of the invention is the recognition that due to the supply of electrical power by higher voltage in the cryostat a reduction of the warm flow in the Kry- ostaten takes place and thus a reduction of the necessary cooling power is possible.
  • slip rings are not necessarily required. If slip rings are used, the transmission of the necessary for Er- or de-energizing the Polradspulen electrical power in the cryostat. This results in a much lower heat input into the machine, so that increases their cost-effectiveness. Since the inductive energy transfer takes place without contact, there is no mechanical wear.
  • Figure 1 is a block diagram with the combination of a
  • Schleifringubertragers and a voltage-current transformer for feeding a HTS Polradwicklung
  • FIG. 2 shows a block diagram with the combination of a rotating transformer and a voltage-current converter for feeding a HTS pole-wheel winding
  • FIG. 3 shows a block diagram according to FIG. 1 with a multiplex operation of individual pole wheel coils
  • FIG. 4 shows a block diagram according to FIG. 1 with a parallel control of individual pole wheel coils
  • FIG. 5 shows a block diagram with a combination of a rotating transformer and a voltage-current transformer
  • FIG. 8 shows an axial arrangement of the rotary transformer of FIGS. 1 to 4
  • FIG. 9 shows a radial arrangement of the rotating transformer of FIGS. 1 to 4,
  • FIG. 10 shows the structure of an electrical shunt across the rotating shaft of the machine
  • FIG. 11 shows an alternative embodiment of the shunt according to FIGS. 9 and
  • FIG. 12 shows an alternative arrangement to FIGS. 9 and 10 with a modified pot core.
  • identical or identically acting parts have the same reference numerals. The figures are described in groups together.
  • the machine can be a motor or even a generator.
  • the machine is a superconducting machine, i.
  • the coils, in particular in the Laufer consist of superconducting material and thus work largely lossless.
  • a voltage source 1, a slip ring 2 with subsequent inverter 2 and a transformer 5 are present.
  • the transmitter 5 is located in a cryostat 20 to ensure a predetermined temperature at which the inductors used in the machine are superconducting.
  • the switching and measuring means are assigned.
  • the slip ring arrangement according to FIG. 1 is used for voltage transmission to moving parts. It is advantageous that the slip rings produce no appreciable losses. The losses are generated by the thick wires.
  • a voltage source 1 with an inverter 2 forms an AC voltage source of predetermined frequency, a rotating transformer 3, a power converter 4 and a voltage / current transformer 5 being present.
  • the power converter 4 is composed of an AC-DC converter 4a and a subsequent DC-AC converter 4b.
  • the voltage / current Transformer 5 With the voltage / current Transformer 5, a suitable voltage for feeding a HTS Polradwicklung is generated.
  • a voltage intermediate circuit is therefore present between the rotating transformer 3 and the voltage / current transformer 5.
  • Inverter 4, voltage / current transformer 5 and rectifier may optionally be located in the cold part of the machine.
  • the voltage / current transformer 5 here goes with its seconds on the individual Polradspulen, each individual Polradspule 10, 10 ', 10' ', ... is controlled individually. This is done by multiplexing. In this case, a current sensor 11 is connected in the voltage line.
  • the units 1 to 4a are formed according to Figure 2.
  • the inverter 4b, the voltage / current Ubertrager and the coil for each individual Polradspule are present in parallel and are therefore driven in parallel.
  • the protection concept for each coil can be dimensioned individually, resulting in greater security.
  • this variant can be combined with the embodiments according to FIGS. 1 to 3.
  • the transformer is in the warm part of the machine.
  • FIGS. 6 and 7 arrangements corresponding to FIG. 1 are shown.
  • a heating resistor 55 is present.
  • this resistor 55 is arranged between the rotary transformer 3 and the rectifier 4 and is consequently actuated by an AC switch 56.
  • the heating resistor 55 is arranged between the rectifier and the inverter 4b and is therefore operated with a DC switch 66.
  • the voltage-current transmission for adaptation of the intermediate circuit voltage and the DC link current to the Polradbeginn and the Polradstrom
  • a power electronics for the rectification and for the freewheeling circuit at the Polradstrom and control electronics.
  • the power electronics are provided on copper rails with power semiconductors and the control electronics on printed circuit boards.
  • a fixed / rotating transformer for the energy transfer to the rotating shaft which consists of two ferrite half-shells, which face each other on the rotating and stationary part of the machine, and associated means for attachment to the shaft (???). Since the exciter means are at the axial, i. loose end of the shaft must be expected at the rotating transformer, a temperature-induced axial play of about 0.4 mm. This results in two possibilities for the mechanical design of the rotating transformer according to Figure 7 on the one hand and Figure 8 on the other.
  • the shaft is denoted by 71 and the associated shield by 72.
  • the transformer of two half-shells 73 and 74 is designated overall by 75. He carries the electrical means. While in Figure 7 the assembly 75 is axially, i. is arranged in the axial direction of the shaft 71, it is radial in Figure 8, i. positioned perpendicular to the axial direction of the shaft 71.
  • the axial clearance of the transformer according to FIG. 8 influences the air gap and thus the main inductance of the transformer due to the axial play of the shaft. This can be compensated for by an active control of the air gap nachge- is presented.
  • the detection of the air gap can optionally be effected electrically by determining the magnetizing current of the transformer and from this the main inductance of the transformer. For measuring the magnetizing current reference is made to a parallel application of the applicant.
  • the assembly of the ferrite cores, the control electronics and the power semiconductor within the shaft takes place.
  • Such an embodiment has the advantage that the shaft for cable penetrations does not have to be drilled and that the ferrite cores do not have to be segmented.
  • the ferrite cores are mounted inside the shaft, with the control electronics and the power semiconductors enclosing the shaft from the outside. This has the advantage that the electronics can be easily removed and that the ferrite cores need not be segmented.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superconductive Dynamoelectric Machines (AREA)

Abstract

Selon la présente invention, une puissance électrique doit être transmise aux bobines de roue polaire du rotor d'une machine électrique. Les bobines de roue polaire sont notamment constituées d'un matériau supraconducteur, de manière que le rotor se trouve protégé dans une plage de basses températures. Selon cette invention, la puissance électrique est transmise aux bobines de roue polaire par induction. A cette fin, au moins un transformateur électrique est prévu et des conditions secondaires sont maintenues dans les bobines de roue polaire afin de produire un flux magnétique uniforme. Il est préférable de disposer d'au moins un transformateur rotatif et d'un transformateur pour hautes tensions dans la plage de basses températures.
PCT/EP2006/066288 2005-09-30 2006-09-12 Procede et dispositif de transmission d'energie par induction a des bobines d'excitation supraconductrices d'une machine electrique WO2007036430A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005047553 2005-09-30
DE102005047553.1 2005-09-30

Publications (1)

Publication Number Publication Date
WO2007036430A1 true WO2007036430A1 (fr) 2007-04-05

Family

ID=37529429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/066288 WO2007036430A1 (fr) 2005-09-30 2006-09-12 Procede et dispositif de transmission d'energie par induction a des bobines d'excitation supraconductrices d'une machine electrique

Country Status (1)

Country Link
WO (1) WO2007036430A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3026796A1 (fr) 2014-11-28 2016-06-01 Deutsches Zentrum für Luft- und Raumfahrt e.V. Generateur a induction electrique
DE102015117296A1 (de) * 2015-10-09 2017-04-13 Oswald Elektromotoren Gmbh Elektrische Maschine
DE102009018513B4 (de) 2009-04-24 2023-07-13 Sew-Eurodrive Gmbh & Co Kg Elektromotor, insbesondere fremderregte Synchronmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126798A (en) * 1975-01-02 1978-11-21 Westinghouse Electric Corp. Superconductive winding
JPS5775564A (en) * 1980-10-28 1982-05-12 Hitachi Ltd Exciter for superconductive rotary machine
JPH089628A (ja) * 1994-06-16 1996-01-12 Toshiba Corp 回転電機及びその冷却装置、並びに発電機の運転方法
WO2001058005A2 (fr) * 2000-01-11 2001-08-09 American Superconductor Corporation Telemesure d'assemblage d'excitatrice
DE10156212A1 (de) * 2001-11-15 2003-06-05 Siemens Ag Vorrichtung zur elektrischen Versorgung wenigstens eines Supraleiters
WO2005028242A1 (fr) * 2003-09-05 2005-03-31 Bombardier Transportation Gmbh Ensemble convertisseur de puissance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126798A (en) * 1975-01-02 1978-11-21 Westinghouse Electric Corp. Superconductive winding
JPS5775564A (en) * 1980-10-28 1982-05-12 Hitachi Ltd Exciter for superconductive rotary machine
JPH089628A (ja) * 1994-06-16 1996-01-12 Toshiba Corp 回転電機及びその冷却装置、並びに発電機の運転方法
WO2001058005A2 (fr) * 2000-01-11 2001-08-09 American Superconductor Corporation Telemesure d'assemblage d'excitatrice
DE10156212A1 (de) * 2001-11-15 2003-06-05 Siemens Ag Vorrichtung zur elektrischen Versorgung wenigstens eines Supraleiters
WO2005028242A1 (fr) * 2003-09-05 2005-03-31 Bombardier Transportation Gmbh Ensemble convertisseur de puissance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009018513B4 (de) 2009-04-24 2023-07-13 Sew-Eurodrive Gmbh & Co Kg Elektromotor, insbesondere fremderregte Synchronmaschine
EP3026796A1 (fr) 2014-11-28 2016-06-01 Deutsches Zentrum für Luft- und Raumfahrt e.V. Generateur a induction electrique
DE102014117524A1 (de) 2014-11-28 2016-06-02 Deutsches Zentrum für Luft- und Raumfahrt e.V. Elektrische Drehfeldmaschine
DE102015117296A1 (de) * 2015-10-09 2017-04-13 Oswald Elektromotoren Gmbh Elektrische Maschine
WO2017060509A1 (fr) * 2015-10-09 2017-04-13 Oswald Elektromotoren Gmbh Machine électrique
US10886820B2 (en) 2015-10-09 2021-01-05 Oswald Elektromotoren Gmbh Electrical machine

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