EP3756258A1 - Twin-fed asynchronous machine having flywheel as phase shifter and energy source - Google Patents

Twin-fed asynchronous machine having flywheel as phase shifter and energy source

Info

Publication number
EP3756258A1
EP3756258A1 EP19716811.5A EP19716811A EP3756258A1 EP 3756258 A1 EP3756258 A1 EP 3756258A1 EP 19716811 A EP19716811 A EP 19716811A EP 3756258 A1 EP3756258 A1 EP 3756258A1
Authority
EP
European Patent Office
Prior art keywords
flywheel
speed
rotor
network
asynchronous machine
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Withdrawn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
EP19716811.5A
Other languages
German (de)
French (fr)
Inventor
Jens Rosendahl
Roland Sievert
Klaus-Dieter Walli
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 Energy Global GmbH and Co KG
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 EP3756258A1 publication Critical patent/EP3756258A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/30—Arrangements for balancing of the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
    • 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
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/007—Control circuits for doubly fed generators
    • 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
    • H02P2103/00—Controlling arrangements characterised by the type of generator
    • H02P2103/10—Controlling arrangements characterised by the type of generator of the asynchronous type
    • 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
    • Y02E40/30—Reactive power compensation
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Definitions

  • the invention relates to a system which can be used to support a three-phase network but also as energy storage.
  • synchronous rotating phase shifters are used, which differ structurally only slightly from classical synchronous machines in fossil power plants.
  • regenerators or energy storages which however require a certain amount of time to reach their full capacity or are limited in their output.
  • the invention is based on the problem, a Energyspei cher for a power grid, in particular three-phase network, to sheep fen, which is able to buffer an amount of energy that is significantly higher than that of a synchronously rotating phase shifter.
  • the problem is solved by a system having the features of claim 1. An.
  • the present invention has a combination of frequency and voltage stabilizing function with a ro tierenden energy storage. This is achieved by a variable-speed rotating, directly coupled to the transmission or distribution system.
  • the system of the invention opens up in combination with flywheels as a real energy storage a high performance class.
  • the rotor of the asynchronous machine is connected to the flywheel via a gearbox which boosts the rotational speed. This measure makes use of the knowledge that the ability of the momentum to store energy increases disproportionately with the speed.
  • Figure 1 shows a variable-speed double-fed Asynchronma machine in combination with a flywheel.
  • the system shown in Figure 1 comprises an asynchronous DFIG, which is connected via a transformer TRAFO with a three-phase network GRID.
  • the rotor of the asynchronous machine is electrically connected to the network via a frequency converter FC and mechanically coupled to a flywheel FW.
  • the stator of the asynchronous machine is electrically connected to the grid.
  • variable-speed, double-fed asynchronous machine in combination with a flywheel offers a combination of the features frequency support, voltage stabilization, energy storage and short-circuit power.
  • the rotor is - in contrast to the classic Synchronmaschi ne - fed with a three-phase variable frequency and can therefore - if all requirements for synchronous
  • phase shifter - the speed of the rotor and thus of the
  • Control flywheel In addition to the function as a voltage regulator render phase shifter energy stored in the flywheel at the same time changing the speed or removed who the.
  • the amount of energy depends on the design of the flywheel (for example, directly coupled or via a gearbox xn, which increases the speed) and the running speed range.
  • the transmission xn has a gear ratio times n, where n is a natural number.
  • the short-term available power corresponds to the performance class of the phase shifter. It can be achieved very high performance classes and power densities.
  • a power timing of the charging or discharging of the mechanical energy storage is possible, for example, via the following modes:
  • Control of the speed gradient to specifically control power consumption and output control, for example for energy storage over day / night cycles or as a preventive measure for visible stability bottlenecks.
  • the inventive system has over alternative fre quenzvariablen solutions with Vollumrichtersystemen (such as turbo generators with frequency converter at the output terminals, Synchrogrid to 380 MW) advantageously lower losses and significantly reduced effort.
  • Vollumrichtersystemen such as turbo generators with frequency converter at the output terminals, Synchrogrid to 380 MW
  • the system according to the invention has over other technical solutions based on expensive large-scale electronic power components, such as SVC Plus Super Capacitors and battery storage, significantly improved core properties of the network stabilization.
  • the current account of the plant will be about zero (absorbed minus released energy), whereby the plant form is not integrated into the producer technology, but in energy storage on the one hand and on the other hand network backup systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The present invention proposes a system that is directly coupled to the transmission network or the distribution network, wherein a variable-speed, twin-fed asynchronous machine is combined with a flywheel. Besides the function as a voltage-regulating phase shifter, energy in the flywheel can at the same time be stored or removed as the speed changes. The provided properties relate to a combination of frequency support, voltage stabilisation, energy storage and short-circuit capacity. In a particular embodiment the speed of the flywheel is increased in relation to the speed of the rotor by means of a transmission, wherein the capability of the flywheel to store energy advantageously rises disproportionally with the speed.

Description

Beschreibung description
Doppelt gespeiste Asynchronmaschine mit Schwungrad als Pha senschieber und Energiespeicher Double-fed asynchronous machine with flywheel as Pha senschieber and energy storage
Die Erfindung betrifft ein System, das zur Stützung eines Drehstromnetzes aber auch als Energiespeicher nutzbar ist. The invention relates to a system which can be used to support a three-phase network but also as energy storage.
Eine hoch volatile Energieproduktion benötigt Netzstützungs anlagen für die Spannungsstabilität und die Frequenzstabili tät. Die Ausgangsleistung von den meisten regenerativen Er zeugern unterliegt starken Schwankungen. Bei schnellen Ände rungen der Leistung müssen Reserven zur Kompensation von Blindleistung und Wirkleistung sowie Kurzschlussleistung be reit gestellt werden. Highly volatile energy production requires grid support systems for voltage stability and frequency stability. The output of most regenerative generators is subject to strong fluctuations. In the event of rapid changes in power reserves must be made available to compensate for reactive power and active power as well as short-circuit power.
Zur Stützung der Spannung werden unter anderem synchron ro tierende Phasenschieber eingesetzt, welche sich konstruktiv nur wenig von klassischen Synchronmaschinen in fossilen Kraftwerken unterscheiden. Zur Frequenzstützung müssen Reser veerzeuger oder Energiespeicher eingesetzt werden, die aber eine gewisse Zeit benötigen, um die volle Leistungsfähigkeit zu erreichen oder in ihrem Output begrenzt sind. To support the voltage, inter alia, synchronous rotating phase shifters are used, which differ structurally only slightly from classical synchronous machines in fossil power plants. To support the frequency, it is necessary to use regenerators or energy storages, which however require a certain amount of time to reach their full capacity or are limited in their output.
Zur Dämpfung sehr schneller Frequenzänderungen werden verein zelt auch Schwungmassen an synchron rotierenden Phasenschie bern angebracht, welche die Trägheit gegenüber diesen Ände rungen erhöhen und den Reserveanlagen mehr Zeit verschaffen, um die benötigte Leistung zu erreichen. To attenuate very fast frequency changes are also unequally also flywheels mounted on synchronously rotating phase shift bern, which increases the inertia against these changes ments and give the backup systems more time to achieve the required power.
Die genannten Lösungen sind auf Systemebene seit langem be kannt The solutions mentioned have long been known at the system level
Der Erfindung liegt das Problem zugrunde, einen Energiespei cher für ein Stromnetz, insbesondere Drehstromnetz, zu schaf fen, der imstande ist eine Energiemenge zwischenzuspeichern, die signifikant höher ist als die eines synchron rotierenden Phasenschiebers . Das Problem wird durch ein System mit den Merkmalen des An spruchs 1 gelöst. The invention is based on the problem, a Energiespei cher for a power grid, in particular three-phase network, to sheep fen, which is able to buffer an amount of energy that is significantly higher than that of a synchronously rotating phase shifter. The problem is solved by a system having the features of claim 1. An.
Als erfindungswesentliches Element ist eine Steuerbarkeit der Drehzahl der Schwungmasse und damit eine Möglichkeit zur Steuerung einer aufzunehmenden beziehungsweise abzugebenden hohen Energiemenge gegeben. Dies steht im Gegensatz zu kon ventionellen Phasenschieberanlagen, die auf Grund der starr netzgebundenen Drehzahl nur sehr geringe Mengen von Energie aufnehmen oder abgeben können. As an element essential to the invention is a controllability of the speed of the flywheel and thus given a way to control a male or to be delivered high amount of energy. This is in contrast to conven tional phase shifter systems that can absorb or release only very small amounts of energy due to the rigid network speed.
Die vorliegende Erfindung weist eine Kombination von fre- quenz- und spannungsstabilisierender Funktion mit einem ro tierenden Energiespeicher auf. Erreicht wird dies durch ein mit variabel steuerbarer Drehzahl rotierendes, direkt an das Übertragungungs- oder Verteilnetz gekoppeltes System. The present invention has a combination of frequency and voltage stabilizing function with a ro tierenden energy storage. This is achieved by a variable-speed rotating, directly coupled to the transmission or distribution system.
Das erfindungsgemäße System erschließt in der Kombination mit Schwungrädern als echter Energiespeicher eine hohe Leistungs klasse . The system of the invention opens up in combination with flywheels as a real energy storage a high performance class.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unter ansprüchen angegeben. Advantageous developments of the invention are specified in the subclaims.
In einer besonderen Weiterbildung der Erfindung ist der Rotor der Asynchronmaschine über ein Getriebe, das die Drehzahl hochsetzt, mit dem Schwungrad verbunden. Diese Maßnahme macht sich die Erkenntnis zu Nutze, dass die Fähigkeit des Schwung rades Energie zu speichern überproportional mit der Drehzahl ansteigt . In a particular development of the invention, the rotor of the asynchronous machine is connected to the flywheel via a gearbox which boosts the rotational speed. This measure makes use of the knowledge that the ability of the momentum to store energy increases disproportionately with the speed.
Die Erfindung wird im Folgenden als Ausführungsbeispiel in einem zum Verständnis erforderlichen Umfang anhand einer Fi gur näher erläutert . Dabei zeigt : The invention is explained in more detail below as an exemplary embodiment in a scope necessary for understanding with reference to a fi gure. Showing:
Fig 1 eine drehzahlvariable doppelt gespeiste Asynchronma schine in Kombination mit einem Schwungrad. Das in Fig 1 dargestellte System weist eine Asynchronmaschine DFIG auf, die über einen Transformator TRAFO mit einem drei phasigen Netz GRID verbunden ist. Der Rotor der Asynchronma schine ist elektrisch über einen Frequenzkonverter FC mit dem Netz verbunden und mechanisch mit einem Schwungrad FW gekop pelt. Der Stator der Asynchronmaschine ist elektrisch mit dem Netz verbunden. Figure 1 shows a variable-speed double-fed Asynchronma machine in combination with a flywheel. The system shown in Figure 1 comprises an asynchronous DFIG, which is connected via a transformer TRAFO with a three-phase network GRID. The rotor of the asynchronous machine is electrically connected to the network via a frequency converter FC and mechanically coupled to a flywheel FW. The stator of the asynchronous machine is electrically connected to the grid.
Die drehzahlvariable doppelt gespeiste Asynchronmaschine in Kombination mit einem Schwungrad bietet eine Kombination der Eigenschaften Frequenzstützung, Spannungsstabilisierung, Energiespeicher und Kurzschlussleistung. The variable-speed, double-fed asynchronous machine in combination with a flywheel offers a combination of the features frequency support, voltage stabilization, energy storage and short-circuit power.
Der Rotor wird - im Gegensatz zur klassischen Synchronmaschi ne - mit einem Drehstrom variabler Frequenz gespeist und kann daher - bei Erfüllung aller Anforderungen an Synchron The rotor is - in contrast to the classic Synchronmaschi ne - fed with a three-phase variable frequency and can therefore - if all requirements for synchronous
phasenschieber - die Drehzahl des Rotors und damit des phase shifter - the speed of the rotor and thus of the
Schwungrads steuern. Neben der Funktion als spannungsregulie render Phasenschieber kann gleichzeitig Energie im Schwungrad unter Änderung der Drehzahl gespeichert oder entnommen wer den . Control flywheel. In addition to the function as a voltage regulator render phase shifter energy stored in the flywheel at the same time changing the speed or removed who the.
Die Energiemenge hängt von der Ausführung des Schwungrades (zum Beispiel direkt gekoppelt oder über eine Getriebe xn, welches die Drehzahl hochsetzt) und dem ausgeführten Dreh zahlbereich ab. Das Getriebe xn weist ein Übersetzungsver hältnis mal n auf, wobei n eine natürliche Zahl ist. The amount of energy depends on the design of the flywheel (for example, directly coupled or via a gearbox xn, which increases the speed) and the running speed range. The transmission xn has a gear ratio times n, where n is a natural number.
Die kurzzeitig verfügbare Leistung entspricht der Leistungs klasse des Phasenschiebers. Es können sehr hohe Leistungs klassen und Leistungsdichten erreicht werden. The short-term available power corresponds to the performance class of the phase shifter. It can be achieved very high performance classes and power densities.
Eine Leistungs-Zeitsteuerung der Aufladung oder Entladung des mechanischen Energiespeichers ist zum Beispiel über folgende Modi möglich: A power timing of the charging or discharging of the mechanical energy storage is possible, for example, via the following modes:
Messung der Netzfrequenz und automatische Einstellung der Leistungsaufnahme beziehungsweise Leistungsabgabe gemäß An forderungsprofil des Netzbetreibers für die Services PRL (Primärregelleistung) oder EFR (enhanced frequency response, Great Britain) ; Measurement of the network frequency and automatic adjustment of the power consumption or power output according to the requirements profile of the network operator for the services PRL (Primary control power) or EFR (enhanced frequency response, Great Britain);
Messung des Netzfrequenz-Gradienten und Einstellen der Leis tung als Gegenmaßnahme für schnelle Frequenzänderungen (akti ve Dämpfung der RoCoF : Rate of change of frequency) ;  Measurement of the mains frequency gradient and adjustment of the power as a countermeasure for rapid frequency changes (active attenuation of the RoCoF: rate of change of frequency);
Steuerung des Drehzahlgradienten, um gezielt Leistungsaufnah me und -abgabe zu steuern, zum Beispiel zur Energiespeiche rung über Tag/Nacht Zyklen oder als Präventivmaßnahme für ab sehbare Stabilitätsengpässe.  Control of the speed gradient to specifically control power consumption and output control, for example for energy storage over day / night cycles or as a preventive measure for visible stability bottlenecks.
Die spannungsregulierenden Eigenschaften eines synchronen Phasenschiebers werden dabei weiter gewährleistet.  The voltage-regulating properties of a synchronous phase shifter are further ensured.
Das erfindungsgemäße System weist gegenüber alternativen fre quenzvariablen Lösungen mit Vollumrichtersystemen (wie zum Beispiel Turbogeneratoren mit Frequenzumrichter an den Aus gangsklemmen, Synchrogrid bis 380 MW) in vorteilhafter Weise geringere Verluste und erheblich verringerten Aufwand auf. The inventive system has over alternative fre quenzvariablen solutions with Vollumrichtersystemen (such as turbo generators with frequency converter at the output terminals, Synchrogrid to 380 MW) advantageously lower losses and significantly reduced effort.
Das erfindungsgemäße System weist gegenüber anderen techni schen Lösungen basierend auf teuren leistungselektronischen Großkomponenten, wie zum Beispiel SVC Plus Super Capacitors und Batteriespeicher, erheblich verbesserte Kerneigenschaften der Netzstabilisierung auf. The system according to the invention has over other technical solutions based on expensive large-scale electronic power components, such as SVC Plus Super Capacitors and battery storage, significantly improved core properties of the network stabilization.
Die Leistungsbilanz der Anlage wird etwa Null sein (aufgenom mene minus abgegebene Energie) , wodurch sich die Anlagenform nicht in die Erzeugertechnologie eingliedert, sondern in Energiespeicher einerseits und Netzstützungsanlagen anderer seits . The current account of the plant will be about zero (absorbed minus released energy), whereby the plant form is not integrated into the producer technology, but in energy storage on the one hand and on the other hand network backup systems.
Die vorliegende Erfindung wurde zu Illustrationszwecken an hand von konkreten Ausführungsbeispielen im Detail erläutert. Dabei können Elemente der einzelnen Ausführungsbeispiele auch miteinander kombiniert werden. Die Erfindung soll daher nicht auf einzelne Ausführungsbeispiele beschränkt sein, sondern lediglich eine Beschränkung durch die angehängten Ansprüche erfahren . The present invention has been explained for illustrative purposes with reference to concrete embodiments in detail. In this case, elements of the individual embodiments can also be combined with each other. The invention is therefore not intended to be limited to individual embodiments, but merely to be limited by the appended claims.

Claims

Patentansprüche claims
1. System zur Stützung eines Drehstromnetzes aber auch als EnergieSpeicher, 1. System for supporting a three-phase network but also as energy storage,
bei dem in which
- eine Asynchronmaschine (DFIG) , deren Rotor mit einem Schwungrad (FW) zusammenwirkt, gegeben ist,  an asynchronous machine (DFIG) whose rotor interacts with a flywheel (FW) is given,
- die Asynchronmaschine zum Einen aus dem Drehstromnetz (GRID) gespeist ist und zum Anderen mit einem Drehstrom variabler Frequenz gespeist ist.  - The asynchronous machine is fed on the one hand from the three-phase network (GRID) and fed to the other with a three-phase variable frequency.
2. System nach Anspruch 1, 2. System according to claim 1,
dadurch gekennzeichnet, dass characterized in that
das Schwungrad direkt mit dem Rotor der Asynchronmaschine verbunden ist. the flywheel is directly connected to the rotor of the asynchronous machine.
3. System nach Anspruch 1, 3. System according to claim 1,
dadurch gekennzeichnet, dass characterized in that
das Schwungrad über ein Getriebe (xn) mit dem Rotor der Asyn chronmaschine verbunden ist. the flywheel is connected via a gearbox (xn) to the rotor of the Asyn chron machine.
4. System nach Anspruch 3, 4. System according to claim 3,
dadurch gekennzeichnet, dass characterized in that
das Getriebe ein Übersetzungsverhältnis aufweist, das die Drehzahl des Schwungrades gegenüber der Drehzahl des Rotors erhöht . the transmission has a gear ratio that increases the speed of the flywheel relative to the speed of the rotor.
5. System nach einem der vorstehenden Ansprüche 3 bis 4, dadurch gekennzeichnet, dass 5. System according to one of the preceding claims 3 to 4, characterized in that
das Getriebe durch eine Bauart mit stufenlos verstellbarer Überstzung gegeben ist. the transmission is given by a design with continuously adjustable Überstzung.
6. System nach einem der vorstehenden Ansprüche, 6. System according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
der Rotor mit Drehstrom variabler Frequenz gespeist ist. the rotor is fed with three-phase variable frequency.
7. System nach Anspruch 6, 7. System according to claim 6,
dadurch gekennzeichnet, dass der Rotor aus dem Drehstromnetz über einen Frequenzumrichter (FC) gespeist ist. characterized in that the rotor is fed from the three-phase system via a frequency converter (FC).
8. System nach einem der vorstehenden Ansprüche, 8. System according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
das Drehstromnetz durch ein Verteilnetz gegeben ist. the three-phase network is given by a distribution network.
9. System nach einem der vorstehenden Ansprüche, 9. System according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
das Drehstromnetz durch ein Übertragungungsnetz gegeben ist. the three-phase network is given by a transmission network.
10. System nach einem der vorstehenden Ansprüche, 10. System according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
eine Leistungs-Zeitsteuerung der Energieaufladung oder Ener gieentladung gegeben ist. a power timing of the energy charge or energy discharge is given.
11. System nach einem der vorstehenden Ansprüche, 11. System according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Leistungsaufnahme beziehungsweise Leistungsabgabe nach Maßgabe der gemessenen Netzfrequenz geregelt wird. the power consumption or power output is regulated in accordance with the measured network frequency.
12. System nach einem der vorstehenden Ansprüche 12. System according to any one of the preceding claims
dadurch gekennzeichnet, dass characterized in that
die Leistungsaufnahme beziehungsweise Leistungsabgabe nach Maßgabe des Netzfrequenz -Gradienten geregelt wird. the power consumption or power output is regulated in accordance with the grid frequency gradient.
13. System nach einem der vorstehenden Ansprüche, 13. System according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Leistungsaufnahme beziehungsweise Leistungsabgabe nach Maßgabe des Drehzahlgradienten gesteuert wird. the power consumption or power output is controlled in accordance with the speed gradient.
EP19716811.5A 2018-03-28 2019-03-27 Twin-fed asynchronous machine having flywheel as phase shifter and energy source Withdrawn EP3756258A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018204787.1A DE102018204787A1 (en) 2018-03-28 2018-03-28 Double-fed asynchronous machine with flywheel as phase shifter and energy storage
PCT/EP2019/057788 WO2019185753A1 (en) 2018-03-28 2019-03-27 Twin-fed asynchronous machine having flywheel as phase shifter and energy source

Publications (1)

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EP3756258A1 true EP3756258A1 (en) 2020-12-30

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US (1) US20210028626A1 (en)
EP (1) EP3756258A1 (en)
DE (1) DE102018204787A1 (en)
WO (1) WO2019185753A1 (en)

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DE102018204787A1 (en) 2019-10-02
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