EP3440763A1 - Système et installation de génération d'une tension triphasée - Google Patents

Système et installation de génération d'une tension triphasée

Info

Publication number
EP3440763A1
EP3440763A1 EP17721542.3A EP17721542A EP3440763A1 EP 3440763 A1 EP3440763 A1 EP 3440763A1 EP 17721542 A EP17721542 A EP 17721542A EP 3440763 A1 EP3440763 A1 EP 3440763A1
Authority
EP
European Patent Office
Prior art keywords
rotor
phase
voltage
turbine
stator
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP17721542.3A
Other languages
German (de)
English (en)
Inventor
Christian Jäkel
Meinolf Klocke
Christoph Lehmann
Marian-Peter Pieczyk
Holger Romanowski
Milan Schmahl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP3440763A1 publication Critical patent/EP3440763A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
    • H02K19/32—Synchronous generators characterised by the arrangement of exciting windings for pole-changing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings

Definitions

  • the invention relates to a system and a system for Erzeu ⁇ gene of a three-phase AC voltage.
  • Such a plant may comprise at least one turbine and at least one driven by the turbine rotational power genes ⁇ rator, in particular turbogenerator, having.
  • the turbine may be, for example, a gas turbine of a gas and steam turbine power plant (CCGT) or a gas turbine power plant or a steam turbine of a steam turbine power plant.
  • CCGT gas and steam turbine power plant
  • a turbine rotor of the turbine is conventionally rigidly connected to a rotor of the alternator.
  • a three-phase ⁇ alternating voltage with a standard power frequency of 50 Hz or 60 Hz with the alternator and to be able to feed into a power grid the turbine rotor conventionally with an operating frequency of 50 Hz or 60 Hz rotate.
  • An object of the invention is to enable the applicability of turbines whose operating frequency is lower than the grid frequency of a power grid to supply the power grid with electrical energy.
  • a system for generating a three-phase AC voltage comprises at least one three-phase generator having a two-pole rotor with two magnetic poles which are arranged unevenly offset relative to each other with respect to the rotor axis of rotation of the rotor, and at least one filter unit having the phase voltages of one of the rotary current generator generated three-phase AC voltage are filterable.
  • the magnetic poles of the rotor are not on ei ⁇ ner joint perpendicular to the rotor axis of rotation of the rotor extending axis, that is not in a usual pole pitch of 180 ° to each other. Instead, an obtuse or acute angle is arranged between an axis connecting the one magnetic pole to the rotor rotational axis and an axis connecting the other magnetic pole to the rotor rotational axis. This causes the one magnetic pole with respect to the other magnetic pole in the direction of rotation of the rotor with followed by a 180 ° reduced or increased pole spacing.
  • a relatively strongly distorted oscillation is induced in a stator winding of a stator of the three-phase generator in comparison with a customary, approximately sinusoidal oscillation.
  • This oscillation is characterized in that the first half cycle is faster or slower than the second half wave.
  • a Fourier decomposition of the ⁇ ser induced voltage contains several vibration components in different frequency ranges. Depending on the grid frequency of the respective power grid into which the three-phase AC voltage is to be fed, those can
  • Vibration components that are not required for this feed in particular all vibration components except the
  • the filter unit may comprise a filter ⁇ circuit which is adapted to the generated by the alternator three-phase AC voltage and the AC frequency of a to be supplied so that the power system.
  • a special rotor can be produced.
  • Mechanically can be symmetrized by suitable means, such a conventional rotor, for example by EXISTING ⁇ dene, Vietnamesebewickelte grooves of the rotor are filled with replacement bodies of possibly ⁇ .
  • the three-phase generator according to the invention can be applied to systems for generating a three-phase alternating voltage, in which the operating frequency of the turbine rotor or the drive speed generated by the turbine can be arbitrarily below the grid frequency of the power grid into which the three-phase change ⁇ voltage is to be fed.
  • the operating frequency of the turbine rotor or the drive speed generated by the turbine can be arbitrarily below the grid frequency of the power grid into which the three-phase change ⁇ voltage is to be fed.
  • only the pole distance between the magnetic poles of the rotor to the respective difference between the operating fre- quency adjust the frequency of the turbine rotor and the grid frequency of the Stromnet ⁇ zes.
  • a 60Hz three-phase AC voltage using a rotor of the alternator driving 50Hz gas turbine can be generated.
  • 50 Hz gas turbines can be used to supply 60 Hz power grids.
  • a 50 Hz steam turbine can also be used to supply 60 Hz power grids.
  • the power and efficiency of a equipped with a fiction, modern ⁇ alternator system are the subject is higher than a conventional 60Hz gas turbine unit.
  • a conventional 60Hz gas turbine unit since the maximum output of a 50Hz gas turbine is greater by 44% than the maximum power of a corresponding 60Hz gas turbine, larger 60Hz power plants with Weni ⁇ ger blocks can be constructed.
  • power plants which have hitherto been realized with four 60 Hz gas turbine CCG trains, can now be implemented with three 50 Hz gas turbine CCG trains when using the three-phase generator according to the invention. This eliminates the need for a complete line consisting of gas turbine, geno, clutch, boiler, steam turbines and control technology, resulting in enormous cost savings.
  • a Polwinkelabstand between the magnetic poles in the direction of rotation of the rotor is preferably 210 °.
  • the first half wave of indu ⁇ ed in the stator winding voltage swing is faster than the second half wave of the voltage swing.
  • the magnetic south pole of the rotor with respect to a perpendicular to the rotor axis of rotation axis, on which the magnetic north pole of the rotor is located angled by 30 ° to be ⁇ ordered. This leads to the fact that the magnetic south pole opposite the magnetic north pole in reverse direction of the rotor already follows with a pole distance of 150 °.
  • the first Half-wave induced in the stator winding voltage oscillation can then correspond, for example, about a 60Hz half-wave, whereas the second half-wave of the voltage ⁇ oscillation, for example, a 4 OHz half-wave can correspond.
  • a Fourier decomposition of this induced voltage contains, among other vibration components, a 40 Hz, a 50 Hz and a 60 Hz oscillation.
  • This embodiment of the rotor induces a relatively strongly distorted oscillation in the stator winding relative to a customary, approximately sinusoidal 50 Hz oscillation.
  • This vibration is characterized in that the first half-wave of the vibration is faster than the second half-wave.
  • all the vibration components that are not required ie all the vibration components except for the 60 Hz oscillation, can be filtered out of the induced voltage by a suitable filter circuit.
  • the three-phase generator preferably comprises a stator with at least one extended stator winding.
  • a stator with at least one extended stator winding.
  • This filtering may alternatively or additionally achieved by a suitable otherwise, in particular geometric, from ⁇ design of the stator winding. By this filtering unwanted vibration components can be reduced in the three-phase AC voltage generated by the alternator.
  • the stator is a 60Hz stator and the rotor is a 50Hz rotor.
  • the stator is a stator of an alternator whose operating frequency is 60 Hz be ⁇
  • the rotor is a rotor of an alternator whose operating frequency is 50 Hz.
  • the 50Hz rotor is powered by a 50Hz turbine.
  • the filter unit preferably comprises a series resonant circuit per phase of the three-phase alternating voltage generated by the three-phase generator.
  • Each series resonant circuit comprises a Ka ⁇ capacity and an inductance, which are matched to the respective Filung- tion to the respective power grid to be able to supply a three-phase AC voltage whose frequency corresponds to the mains frequency of the power grid.
  • a plant according to the invention for generating a three-phase alternating voltage comprising at least one turbine and Wenig ⁇ least a system according to one of the aforementioned embodiments, or any combination thereof, wherein a turbine rotor of the gas turbine is rotationally fixedly connected to the rotor of the alternator, and wherein an operating frequency of the turbine runner is smaller than a frequency of the filtered with the filter unit three-phase AC voltage.
  • the turbine may be a gas turbine or a steam turbine.
  • the turbine may be a 50Hz turbine.
  • the three-phase generator and the filter unit can be configured such that a 60 Hz three-phase alternating voltage can be generated in the case of a rotor of the three-phase generator rotating at 50 Hz.
  • FIG. 1 shows a schematic representation of an embodiment for a three-phase generator according to the invention
  • FIG. and a schematic representation of awhosbei game for a system according to the invention
  • Fig. 1 shows a schematic cross-sectional view of an embodiment of a Drehstromge ⁇ generator 1 according to the invention for a system, not shown, for generating a three-phase AC voltage.
  • the three-phase generator 1 comprises a two-pole rotor 2 having two magnetic poles 3 and 4, the magnetic pole 3 being a magnetic north pole and the magnetic pole 4 being a south magnetic pole.
  • the three-phase generator 1 also comprises a stator 5, which has a, in particular, a long,
  • Stator winding 6 in which a voltage is induced by the rotation of the rotor 2 about its rotor axis of rotation 7.
  • the stator 5 is a 60Hz stator and the rotor 2 is a 50Hz rotor.
  • the magnetic poles 3 and 4 are arranged with respect to the rotor axis of rotation 7 of the rotor 2 unevenly circumferentially offset from one another.
  • the magnetic poles 3 and 4 with respect to the rotor axis of rotation 7 of the rotor 2 are so uneven ⁇ circumferentially offset from one another that a Polwinkelabstand 8 between the magnetic poles 3 and 4 in a direction indicated by an arrow 9 rotational direction of the rotor 2 is greater than 180 ° is.
  • the pole angle 8 is 210 ° in the direction of rotation of the rotor 2 in the exemplary embodiment shown.
  • the magnetic pole 4 of the rotor 2 with respect to a perpendicular to the rotor axis 7 extending axis 10, on which the magnetic pole 3 of the rotor 2 is disposed at an angle of 30 °. Therefore, the magnetic pole 4 with respect to the magnetic pole 3 in the opposite direction of rotation of the rotor 2 already follows with a pole pitch of 150 °.
  • the first half-wave of a voltage oscillation induced in the stator winding 6 corresponds approximately to a 60 Hz half-wave
  • the second half-wave corresponds to the voltage oscillation approximately to a 4 Hz half-wave.
  • the first half-wave of the vibration is faster than the second half-wave.
  • a Fourier decomposition of this induced voltage contains, among other vibrational components, a 40Hz, a 50Hz and one 60Hz oscillation.
  • a vibration which is relatively strongly distorted in comparison with a customary, approximately sinusoidal 50 Hz oscillation is induced.
  • To be able to supply a 60 Hz power supply with a 60 Hz three-phase AC voltage all vibration components that are not needed, so all vibration components except the 60Hz oscillation, filtered out by a filter circuit, not shown, from the induced voltage.
  • Fig. 2 shows a schematic representation of an execution ⁇ example of an inventive system 11 for generating a three-phase AC voltage.
  • the plant 11 comprises a turbine 12 in the form of a 50 Hz
  • the system 11 comprises a system 13 for generating the three-phase alternating voltage.
  • the system 13 is connected to a 60Hz power grid 14 into which the 60Hz three phase AC voltage is to be fed.
  • the system 13 includes an alternator 1, which may be formed as shown in FIG. Of the three-phase generator 1, only a stator circuit diagram with three winding resistances 15 representing the stator winding is shown in FIG. A turbine rotor, not shown, of the turbine 12 is non-rotatably connected to the rotor, not shown, of the Drehstromgene ⁇ generator 1.
  • the system comprises a filter unit 16, with the phase voltages generated by the alternator 1 can be filtered.
  • the filter unit 16 includes per phase of the three-phase AC voltage generated by the alternator 1 is a series resonant circuit 17.
  • Each series resonant circuit 17 includes an inductor 18 and a capacitor 19.
  • An operating frequency of the turbine rotor is less than a Fre acid sequence of the filtered with the filter unit 16 three-phase AC voltage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Eletrric Generators (AREA)
  • Synchronous Machinery (AREA)

Abstract

L'invention concerne un générateur de courant triphasé qui est destiné à une installation et qui assure la génération d'une tension triphasée, lequel générateur comprend un rotor bipolaire doté de deux pôles magnétiques, les pôles magnétiques étant disposés mutuellement de manière irrégulière et en décalage sur la périphérie.
EP17721542.3A 2016-05-18 2017-04-18 Système et installation de génération d'une tension triphasée Withdrawn EP3440763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16170135.4A EP3247023A1 (fr) 2016-05-18 2016-05-18 Generateur a courant rotatif et systeme et installation destines a produire une tension triphasee alternative
PCT/EP2017/059182 WO2017198409A1 (fr) 2016-05-18 2017-04-18 Système et installation de génération d'une tension triphasée

Publications (1)

Publication Number Publication Date
EP3440763A1 true EP3440763A1 (fr) 2019-02-13

Family

ID=56087120

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16170135.4A Withdrawn EP3247023A1 (fr) 2016-05-18 2016-05-18 Generateur a courant rotatif et systeme et installation destines a produire une tension triphasee alternative
EP17721542.3A Withdrawn EP3440763A1 (fr) 2016-05-18 2017-04-18 Système et installation de génération d'une tension triphasée

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16170135.4A Withdrawn EP3247023A1 (fr) 2016-05-18 2016-05-18 Generateur a courant rotatif et systeme et installation destines a produire une tension triphasee alternative

Country Status (5)

Country Link
US (1) US20190288589A1 (fr)
EP (2) EP3247023A1 (fr)
JP (1) JP2019521631A (fr)
CN (1) CN109155548A (fr)
WO (1) WO2017198409A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US809706A (en) * 1905-06-29 1906-01-09 Karl Arvid Lindstroem Electric alternating-current machine.
US1581828A (en) * 1924-11-08 1926-04-20 Gen Electric Alternator field
AT332485B (de) * 1974-01-14 1976-09-27 Siemens Ag Bezuglich der betriebsfrequenz von 50 auf 60 hz umstellbare elektrische synchronmaschine
CN2284471Y (zh) * 1996-12-31 1998-06-17 上海上自电气控制公司 60赫兹交流异步变频装置
CN101677224A (zh) * 2008-09-18 2010-03-24 上海亿途信息技术有限公司 一种高性价比变速恒频风力发电系统
GB201113694D0 (en) * 2011-08-09 2011-09-21 Univ Southampton Turbine generator
US10608509B2 (en) * 2016-10-17 2020-03-31 Roul Delroy MARTIN Rotatable electric machines

Also Published As

Publication number Publication date
EP3247023A1 (fr) 2017-11-22
CN109155548A (zh) 2019-01-04
JP2019521631A (ja) 2019-07-25
US20190288589A1 (en) 2019-09-19
WO2017198409A1 (fr) 2017-11-23

Similar Documents

Publication Publication Date Title
EP3134960B1 (fr) Moteur électrique
EP2301140B1 (fr) Machine synchrone à aimants permanents
DE102016202477B4 (de) Elektrische maschine
DE102014003658A1 (de) Reluktanzmotor
DE102013102900A1 (de) Synchronmaschine
EP1266446B1 (fr) Generateur synchrone
DE102004023253A1 (de) Elektrische Drehmaschine
DE112016000682T5 (de) Elektrische rotationsmaschine, fahrstuhl-hebevorrichtung und verfahren zum magnetisieren und entmagnetisieren eines permanentmagneten für eine elektrische rotationsmaschine
DE102012202735B4 (de) Dynamoelektrische Maschine mit einer Einschichtbruchlochwicklung
DE102006034993B4 (de) Magnetoelektrischer Generator
DE102008036704B4 (de) Gleichstrom-Maschine mit elektronischer Kommutierung
DE202011051851U1 (de) Hochwirksame elektrische Stromerzeugungsvorrichtung mit hoher Ausgangsdichte
DE202018001139U1 (de) Elektrische Universal Kraftmaschine
EP2266186A2 (fr) Machine électrique d'entraînement
WO2013034313A2 (fr) Machine synchrone à double excitation
WO2017198409A1 (fr) Système et installation de génération d'une tension triphasée
DE102018211462A1 (de) Elektrische rotierende maschine
DE102008029377B4 (de) Vorrichtung für eine Wind- oder Wasserkraftanlage zur Erzeugung elektrischer Energie
DE102014200394A1 (de) Reduzierung des Rastmoments und der Drehmomentwelligkeit eines elektrisch erregten Generators durch alternative Verlängerung von Rotorpolschuhen
DE102011001513A1 (de) Verfahren zur Steuerung oder Regelung einer rotierenden elektrischen Maschine und rotierende elektrische Maschine
EP1758229A2 (fr) Moteur électrique
DE102015202988A1 (de) Axialflussmaschine mit reduzierten axialen Kräften
EP3627666A1 (fr) Unité magnétique active d'une machine électrique rotative polyphasée
DE102011121009A1 (de) Doppelterregte Asynchronmaschine für Windenergieanlagen
WO2012122965A2 (fr) Générateur électrique pour une éolienne

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181108

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190612