EP4602686A1 - High frequency electric power system - Google Patents

High frequency electric power system

Info

Publication number
EP4602686A1
EP4602686A1 EP23794365.9A EP23794365A EP4602686A1 EP 4602686 A1 EP4602686 A1 EP 4602686A1 EP 23794365 A EP23794365 A EP 23794365A EP 4602686 A1 EP4602686 A1 EP 4602686A1
Authority
EP
European Patent Office
Prior art keywords
wind turbine
power system
converter
plant
electrical power
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Withdrawn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
EP23794365.9A
Other languages
German (de)
French (fr)
Inventor
Mogens Lund
Florin Valentin Traian Nica
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 Gamesa Renewable Energy AS
Original Assignee
Siemens Gamesa Renewable Energy AS
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 Gamesa Renewable Energy AS filed Critical Siemens Gamesa Renewable Energy AS
Publication of EP4602686A1 publication Critical patent/EP4602686A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/19—Combinations of wind motors with apparatus storing energy storing chemical energy, e.g. using electrolysis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/14—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network the power network being locally controlled, e.g. home energy management systems [HEMS]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/61—Application for hydrogen and/or oxygen production
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/28—Wind energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/10—Local stationary networks having a local or delimited stationary reach
    • H02J2105/16—Local stationary networks having a local or delimited stationary reach being internal to power sources or power generation plants
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to the power system trans forming the generated AC current into a DC current for the hydrogen plant .
  • the utility grid usually operates at pre-defined frequencies , typically 50Hz or 60Hz , and when connected to the grid, the wind turbine thus needs to be adapted to generate current at accordingly, independent of fluctuating wind conditions .
  • Wind turbines adapted to produce only hydrogen with no grid connection do not have the same requirement to generate power at a speci fic frequency .
  • the obj ect of the present invention is for a dedicated hydrogen producing wind turbine , operating without grid connection, to design the electrical power system more optimally by running the system at a higher frequency .
  • the more optimal design of electrical power system in the present refers to a higher ef ficiency, lower component mass , lower component volume and lower component cost .
  • the electrical power system may operate at signi ficantly higher frequencies than wind turbines adapted to feed electrical power to utility power grids . It thus can operate at signi ficantly higher frequencies than 50 Hz , or 60 Hz .
  • the electrical power system may operate with AC currents with at least two times , or five times or ten times higher frequencies than 50 or 60 Hz .
  • the electrical power system may comprise a back-to-back AC converter including an AC to DC converter, e . g . , an active or passive recti fier and an inverter, where the back-to-back AC converter is positioned between the generator and a trans former .
  • the power system may further comprise an AC to DC converter ( e . g . , active or passive recti fier ) positioned between the trans former and the plant .
  • the power system may comprise a direct AC/AC converter positioned between the generator and a frequency trans former .
  • the present invention further introduces a method to operate a wind turbine powering a hydrogen producing plant , where the wind turbine comprises a generator connected to a wind rotor, and where an electrical power system electrically connects the generator to a plant , wherein the method includes for the electric power system not to adapt any current frequency setpoint dictated by a utility power grid .
  • the present invention could with advantage be used on plant for hydrogen production plant where the powering current frequency is irrelevant .
  • Figure 1 shows a general wind turbine powering hydrogen production plants
  • Figure 5 shows an embodiment where the invention is introduced to a set of parallel and independent hydrogen production plants .
  • Figure 6 shows a flow chart of the method according to the present invention .
  • the illustration in the drawings is in schematic form . It is noted that in di f ferent figures , similar or identical elements may be provided with the same reference signs .
  • FIG 1 shows an embodiment wind turbine 1 positioned in the water, such as the ocean .
  • the wind turbine 1 comprises a tower 2 mounted on a non-depicted fundament .
  • a nacelle 3 is arranged on top of the tower 2 .
  • the wind turbine 1 further comprises a wind rotor 5 having two , three or more blades 4 ( in the perspective of Figure 1 only two blades 4 are visible ) .
  • the wind rotor 5 is rotatable around a longitudinal rotation axis Y .
  • a platform 6 is positioned at the tower 2 .
  • the position of the platform 6 at the tower 2 could be such that it is generally above water despite waves and tides .
  • the platform 6 is adapted for containers 7 to be positioned and optionally fixed on its surface .
  • the containers could comprise operational parts such as hydrogen production plant , but could be other systems , e . g . , CO2 extraction machines , solar heating plants etc . , in the following exampled as hydrogen producing plants each container including electrolyzers etc .
  • the operational parts could be placed remote from the wind turbine 1 .
  • Operation at a low frequency has the disadvantage that the si ze and weight of the magnetic components ( i . e . , trans former 14 , inductor etc . ) are large , leading to an increased complexity and cost of the structure and the foundation of the wind turbine generator 10 , which drives the price up .
  • FIG. 3 illustrates a first embodiment electric power system 9 where it is utilized that the electrolyzer of the hydrogen plant 40 uses DC-current.
  • the electrical power system 9 connects the generator 10 to a hydrogen plant 40.
  • the illustrated setup electrical power system 9 embodiment comprises a back-to-back AC converter including an AC to DC converter 11 (e.g., passive, active rectifier to change the generated AC current into a DC current) and an inverter 13 (to change the DC current back into an AC current) operating at different frequencies on the two AC sides.
  • an AC to DC converter 11 e.g., passive, active rectifier to change the generated AC current into a DC current
  • an inverter 13 to change the DC current back into an AC current
  • an AC to DC converter 11' e.g., passive or active rectifier to change the AC current from the transformer 14' ’ into the correct DC current and voltage to be supplied to the connected hydrogen plant 40.
  • the second transformer 14 and the further AC to DC converter 11' may be located away from or outside the nacelle 3, such as at a platform e.g., at the tower 2, e.g. at the tower 2 bottom.
  • the two transformers 14' 14' ’ thus are positioned in series to efficiently and reliably transport electrical power from the nacelle 3 down to e.g., a wind turbine 1 platform
  • Figure 4 illustrates a second embodiment electric power system 9, where the back-to-back AC converter of figure 3 of the electric power system 9 is replaced by a direct AC/AC converter 15 between generator and a first high frequency transformer 14' .
  • the AC/AC converter 15 operates at different frequencies on the two AC side.
  • generator-utility grid interface 9 of any version and embodiment architecture is illustrated as a single combined box comprising the means to transfer the generated AC current into a suitable DC current.
  • FIG. 6 illustrates the method to operate a wind turbine ( 1 ) powering a hydrogen production plant ( 40 ) .
  • a third step 120 supply output current from the power system to the hydrogen production plant 40 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The present invention relates to a wind turbine (1) powering a plant (40) especially a hydrogen production plant, where the wind turbine (1) comprises a generator (10) connected to a wind rotor (5), and where an electrical power system (9) electrically connects the generator (10) to the plant (40), characterized in that, the frequencies of the currents within the electrical power system (9) are not adapted according to a setpoint dictated by a utility power grid. The present invention further relates to the method to operate the wind turbine (1).

Description

Description
HIGH FREQUENCY ELECTRIC POWER SYSTEM
FIELD OF THE INVENTION
The invention relates to a wind turbine powering a hydrogen production plant , especially the plant electrolyzer .
More speci fically, the invention relates to the power system trans forming the generated AC current into a DC current for the hydrogen plant .
BACKGROUND OF THE INVENTION
It is well known to use wind turbines to power e . g . , the electrolyzers of hydrogen production plants . This can either be by dedicated wind turbines with no grid connection, or by dividing the generated power with the plant and the utility grid .
The utility grid usually operates at pre-defined frequencies , typically 50Hz or 60Hz , and when connected to the grid, the wind turbine thus needs to be adapted to generate current at accordingly, independent of fluctuating wind conditions .
To operate at such low frequencies has the disadvantage that the si ze and weight of the needed magnetic components ( i . e . , trans former, inductor etc . ) are large , leading to an increased complexity and cost of the structure and the foundation of the wind turbine generator, which drives the price up .
Wind turbines adapted to produce only hydrogen with no grid connection, do not have the same requirement to generate power at a speci fic frequency . The obj ect of the present invention is for a dedicated hydrogen producing wind turbine , operating without grid connection, to design the electrical power system more optimally by running the system at a higher frequency .
The more optimal design of electrical power system in the present refers to a higher ef ficiency, lower component mass , lower component volume and lower component cost .
SUMMARY OF THE INVENTION
The obj ect of the invention is achieved by the independent claims . The dependent claims describe advantageous developments and modi fications of the invention .
This includes introducing a wind turbine powering a plant where the wind turbine comprises a generator connected to a wind rotor, and where an electric power system electrically connects the generator to the plant , wherein the frequencies of the currents within the electrical power system are not adapted according to a setpoint dictated by a utility power grid .
The electrical power system may operate at signi ficantly higher frequencies than wind turbines adapted to feed electrical power to utility power grids . It thus can operate at signi ficantly higher frequencies than 50 Hz , or 60 Hz .
The electrical power system may operate with AC currents with at least two times , or five times or ten times higher frequencies than 50 or 60 Hz .
The electrical power system is adapted to deliver a DC current to the plant , through an optimi zed wind turbine configuration .
The frequencies of the currents within the power system may be independent of the plant . This ensures the present invention with advantage can be used for powering plants not connected to the power grid, and not operating at speci fied current frequencies .
The electrical power system may include two trans formers positioned in series , to trans fer electrical energy ef ficiently and reliably from the wind turbine nacelle , where electrical energy is produced, to the wind turbine tower bottom, where the plant consuming electrical energy can be located .
The electrical power system may comprise a back-to-back AC converter including an AC to DC converter, e . g . , an active or passive recti fier and an inverter, where the back-to-back AC converter is positioned between the generator and a trans former . The power system may further comprise an AC to DC converter ( e . g . , active or passive recti fier ) positioned between the trans former and the plant .
Two trans formers may be positioned intermediate to the DC to AC converter of the back-to-back AC converter and an AC to DC converter adapted to be positioned between the trans formers and the plant .
The power system may comprise a direct AC/AC converter positioned between the generator and a frequency trans former .
Two trans formers may be positioned intermediate the direct AC/AC converter and an AC to DC converter adapted to be positioned between the trans formers and the plant .
The present invention further introduces a method to operate a wind turbine powering a hydrogen producing plant , where the wind turbine comprises a generator connected to a wind rotor, and where an electrical power system electrically connects the generator to a plant , wherein the method includes for the electric power system not to adapt any current frequency setpoint dictated by a utility power grid .
The method may be used on the wind turbine according to any of the embodiments .
The present invention could with advantage be used on plant for hydrogen production plant where the powering current frequency is irrelevant .
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention are now described, by way of example only, with reference to the accompanying drawings , of which :
Figure 1 shows a general wind turbine powering hydrogen production plants ;
Figure 2 shows a grid connected power system connecting a generator of a wind turbine to the utility grid to supply it with the correct frequency AC current ;
Figures 3 and 4 show two embodiments of the present invention where the generator placed in the nacelle is connected to a hydrogen production plant , optionally placed at the tower bottom, by a power system forming power system optionally designed to operate at higher frequencies enabling optimi zation of the WTG design .
Figure 5 shows an embodiment where the invention is introduced to a set of parallel and independent hydrogen production plants .
Figure 6 shows a flow chart of the method according to the present invention . The illustration in the drawings is in schematic form . It is noted that in di f ferent figures , similar or identical elements may be provided with the same reference signs .
DESCRIPTION OF THE DRAWINGS
Figure 1 shows an embodiment wind turbine 1 positioned in the water, such as the ocean . The wind turbine 1 comprises a tower 2 mounted on a non-depicted fundament . A nacelle 3 is arranged on top of the tower 2 . The wind turbine 1 further comprises a wind rotor 5 having two , three or more blades 4 ( in the perspective of Figure 1 only two blades 4 are visible ) . The wind rotor 5 is rotatable around a longitudinal rotation axis Y .
In the illustrated embodiment a platform 6 is positioned at the tower 2 . The position of the platform 6 at the tower 2 could be such that it is generally above water despite waves and tides .
The platform 6 is adapted for containers 7 to be positioned and optionally fixed on its surface . In a non-exclusive manner the containers could comprise operational parts such as hydrogen production plant , but could be other systems , e . g . , CO2 extraction machines , solar heating plants etc . , in the following exampled as hydrogen producing plants each container including electrolyzers etc .
Alternatively, or additionally, the operational parts could be placed remote from the wind turbine 1 .
Figure 2 schematically shows the principle of construction of an electrical power system forming a grid connected power system 8 of a wind turbine 1 . A generator 10 is connected to the wind rotor 5 such that a rotation of the wind rotor 5 causes a rotor in the generator 10 to rotate , and to induce power in the stator coils of the generator 10 . Between the generator and the utility grid 30 is positioned a grid connected power system 8 which in the illustrated embodiment comprises a variable-voltage DC link with a capacitor 12 feed by the recti fied voltage pulses of the generator, and an inverter 13 , for example a force-commutated inverter, to create a defined alternating output voltage . A trans former 14 of the generator-utility grid interface brings the alternating voltage to a suitable level for feeding the energy into the utility grid 30 .
The utility grid 30 usually operates at 50Hz or 60Hz , whereas the generator generates current at variable frequencies in dependence of the fluctuating wind conditions . The electrical grid connected power system 8 including trans former 14 thus needs to be able to deliver a substantially constant output frequency with a setpoint frequency corresponding to the grid 30 requirements .
Operation at a low frequency has the disadvantage that the si ze and weight of the magnetic components ( i . e . , trans former 14 , inductor etc . ) are large , leading to an increased complexity and cost of the structure and the foundation of the wind turbine generator 10 , which drives the price up .
For wind turbines adapted solely for powering plants , such as for hydrogen production, however there are not the same requirement to generate power at a speci fic frequency .
The present invention aims to make a cheaper, smaller, and lighter system adapted to power a plant , such as for hydrogen production .
The basic solution is to design the electrical power system to operate without adapting to the setpoint frequency, such as the required frequency of a standard utility grid 30 ( e . g . , 50 or 60 Hz ) . Figure 3 illustrates a first embodiment electric power system 9 where it is utilized that the electrolyzer of the hydrogen plant 40 uses DC-current. Thus, rather than being connected to the utility grid 30, the electrical power system 9 connects the generator 10 to a hydrogen plant 40. The illustrated setup electrical power system 9 embodiment comprises a back-to-back AC converter including an AC to DC converter 11 (e.g., passive, active rectifier to change the generated AC current into a DC current) and an inverter 13 (to change the DC current back into an AC current) operating at different frequencies on the two AC sides.
Two high frequency transformers 14' , 14' ’ (HFT) positioned in series are adapted to operate at frequencies significantly higher than the 50-60 Hz in the utility grid 30, such as at least 2 times, or 5 times or 10 times higher. This enables the use of significantly lighter, smaller and cheaper transformers 14' , 14' ' .
Between the transformers 14' , 14' ' and a connected hydrogen plant 40 may be positioned a further an AC to DC converter 11' (e.g., passive or active rectifier) to change the AC current from the transformer 14' ’ into the correct DC current and voltage to be supplied to the connected hydrogen plant 40) .
The power system 9 first parts, such as the AC to DC converter 11 close to the generator 10, the DC link 12, inverter 13 and one transformer 14, in an embodiment all are in the nacelle 3 of the wind turbine. The second transformer 14 and the further AC to DC converter 11' may be located away from or outside the nacelle 3, such as at a platform e.g., at the tower 2, e.g. at the tower 2 bottom.
Introducing two transformers 14' 14' ’ enables the reduction of the number of cables, and therefore reduces the complexity and cost, while improving efficiency and reliability. The two transformers 14' , 14' ' thus are positioned in series to efficiently and reliably transport electrical power from the nacelle 3 down to e.g., a wind turbine 1 platform
Figure 4 illustrates a second embodiment electric power system 9, where the back-to-back AC converter of figure 3 of the electric power system 9 is replaced by a direct AC/AC converter 15 between generator and a first high frequency transformer 14' . The AC/AC converter 15 operates at different frequencies on the two AC side.
Again, two high frequency transformers 14' , 14' ’ is positioned, in this embodiment between the direct AC/AC converter 15 and an AC to DC converter 11' . As for figure 3 the AC to DC converter 11' is positioned between the transformers 14' ’ and a connected hydrogen plant 40 to change the AC current from the transformer 14' ’ into the correct DC current and voltage to be supplied to the connected hydrogen plant 40.
As for the embodiment of fig. 3 some parts are positioned in the nacelle 3, such as the AC/AC direct converter 15 and one transformer 14. Again, the second transformer 14 and the further AC to DC converter 11' may located at a wind turbine 1 platform e.g., at the tower 2 bottom.
Figure 5 illustrates how the embodiment architectures of figure 3 and 4 can be modularized, to supply multiple electrolyzers in parallel hydrogen plants 40 independently.
In the illustration generator-utility grid interface 9 of any version and embodiment architecture is illustrated as a single combined box comprising the means to transfer the generated AC current into a suitable DC current.
Three phase coils 50 of the generator 10 are seen with the power system 9 connecting them to the hydrogen plants 40. Figure 6 illustrates the method to operate a wind turbine ( 1 ) powering a hydrogen production plant ( 40 ) .
In a first step 100 an AC-current is generated by a wind turbine 1 .
In a second step 110 modi fy the frequency of the AC-current within a power system 9 where modi fication is unrelated to any setpoint frequency dictated by a utility power grid .
In a third step 120 supply output current from the power system to the hydrogen production plant 40 .
Although the present invention has been described in detail with reference to the preferred embodiment , it is to be understood that the present invention is not limited by the disclosed examples , and that numerous additional modi fications and variations could be made thereto by a person skilled in the art without departing from the scope of the invention .

Claims

Patent Claims
1. Wind turbine (1) powering a plant (40) where the wind turbine (1) comprises a generator (10) connected to a wind rotor (5) , and where an electrical power system (9) electrically connects the generator (10) to the plant (40) , characterized in that, the frequencies of the currents within the electrical power system (9) are not adapted according to a setpoint dictated by a utility power grid.
2. Wind turbine (1) according to claim 1, wherein the frequencies of the currents within the electrical power system (9) are not changed with reference to the plant (40) .
3. Wind turbine (1) according to claim 1 or 2, wherein the electrical power system (9) operates with AC currents with significantly higher frequencies than in the standard power grids ( 30 ) .
4. Wind turbine (1) according to claim 3, wherein the electrical power system (9) operates with AC currents with at least two times, or five times or ten times higher frequencies than 50 or 60 Hz.
5. Wind turbine (1) according to any of the preceding claims, wherein the electrical power system (9) is adapted to deliver a DC current output.
6. Wind turbine (1) according to any of the preceding claims, wherein the electrical power system (9) includes two transformers (14' , 14' ' ) positioned in series.
7. Wind turbine (1) according to any of the preceding claims, wherein a converter (11' ) is positioned between a transformer (14) and then plant (40) .
8. Wind turbine (1) according to claim 7, wherein the converter (11' ) is an AC to DC converter.
9. Wind turbine (1) according to any of the preceding claims, wherein the power system (9) comprises a back-to-back AC converter including an AC to DC converter (11) and an inverter (13) , where the back-to-back AC converter is positioned between the generator (10) and a transformer
(14' ) , the electrical power system (9) further comprising an AC to DC converter (11' ) positioned between the transformer ( 14 ' ' ) and the plant (40) .
10. Wind turbine (1) according to 6, 7, 8 and 9, wherein two transformers (14' , 14' ' ) are positioned intermediate the DC to AC converter (11) of the back-to-back AC converter and an AC to DC converter (11' ) adapted to be positioned between the transformers ( 14 ’ ’ ) and the plant (40) .
11. Wind turbine (1) according to any of the preceding claims 1-8, wherein the electrical power system (9) comprises a direct AC/AC converter (15) positioned between the generator (10) and a transformer (14' ) .
12. Wind turbine (1) according to 10 and 11, wherein two transformers (14' , 14' ' ) are positioned intermediate the direct AC/AC converter (15) and an AC to DC converter (11' ) adapted to be positioned between the transformers (14) and the plant (40) .
13. Method to operate a wind turbine (1) powering a hydrogen producing plant (40) , where the wind turbine (1) comprises a generator (10) connected to a wind rotor (5) , and where an electrical power system (9) electrically connects the generator (10) to a plant (40) , characterized in that, the method includes for the electric power system (9) not to adapt any current frequency setpoint dictated by a utility power grid.
14. Method according to claim 12 and used on the wind turbine according to any of claims 1-12.
15. Wind turbine (1) or method to operate the wind turbine (1) according to any of the preceding claims, wherein the plant (40) is a hydrogen production plant (40) .
EP23794365.9A 2022-12-14 2023-10-24 High frequency electric power system Withdrawn EP4602686A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22213482.7A EP4387026A1 (en) 2022-12-14 2022-12-14 Wind power generator with higher output frequency
PCT/EP2023/079649 WO2024125867A1 (en) 2022-12-14 2023-10-24 High frequency electric power system

Publications (1)

Publication Number Publication Date
EP4602686A1 true EP4602686A1 (en) 2025-08-20

Family

ID=84535729

Family Applications (2)

Application Number Title Priority Date Filing Date
EP22213482.7A Withdrawn EP4387026A1 (en) 2022-12-14 2022-12-14 Wind power generator with higher output frequency
EP23794365.9A Withdrawn EP4602686A1 (en) 2022-12-14 2023-10-24 High frequency electric power system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP22213482.7A Withdrawn EP4387026A1 (en) 2022-12-14 2022-12-14 Wind power generator with higher output frequency

Country Status (2)

Country Link
EP (2) EP4387026A1 (en)
WO (1) WO2024125867A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118659408A (en) * 2024-07-17 2024-09-17 华电重工股份有限公司 Energy management method, system, equipment and medium for off-grid wind power hydrogen production system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN215830636U (en) * 2021-01-20 2022-02-15 华南理工大学 Off-grid wind power generation system
EP4053402A1 (en) * 2021-03-01 2022-09-07 Siemens Gamesa Renewable Energy A/S Wind turbine and method

Also Published As

Publication number Publication date
EP4387026A1 (en) 2024-06-19
WO2024125867A1 (en) 2024-06-20

Similar Documents

Publication Publication Date Title
US9306473B2 (en) Variable rotor speed wind turbine, wind park, method of transmitting electric power and method of servicing or inspecting a variable rotor speed wind turbine
Faulstich et al. Medium voltage converter for permanent magnet wind power generators up to 5 MW
US7042110B2 (en) Variable speed distributed drive train wind turbine system
US9525284B2 (en) Medium voltage DC collection system with power electronics
US20150226185A1 (en) Wind farm
EP2497181A1 (en) A renewable energy storage and conversion system
WO2021219182A1 (en) Wind turbine with integrated hydrogen generation
US10107264B2 (en) Medium voltage wind power generation system and power generation method using the same
EP4602686A1 (en) High frequency electric power system
CN203352190U (en) Direct current power transmission system of wind generating set
JP6072650B2 (en) Fluid power system
CN103311951A (en) Wind power plant power transmission method based on voltage transformation of middle frequency or high frequency transformer
WO2021219176A1 (en) Wind turbine for dedicated hydrogen generation
EP4381580B1 (en) System and method for providing electrical power from a wind turbine to a hydrogen production system
CN119325677A (en) Device complex comprising at least two electrolysis devices and a power supply
CN105863964A (en) Wind turbine converter
Verdugo et al. Power station for large scale photovoltaic power plants
Díaz Control of the modular multilevel matrix converter for wind energy conversion systems
KR20110060289A (en) Multi-Wound Electric Appliance System
CN201821117U (en) Wind farm access device based on low-frequency transmission and high-voltage DC (direct current) transmission
CN201466744U (en) Wind power generation system with centralized power conversion
CN202707353U (en) Wave energy and offshore wind power united power generation system
CN213817250U (en) Offshore wind power composite arrangement mode energy storage system
CN102593870A (en) High-voltage high-power direct-drive offshore wind generating set based on superconducting motor
Sivachandran et al. A review of wind energy based decentralized power generation systems with new developments in India

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

17P Request for examination filed

Effective date: 20250513

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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR

18W Application withdrawn

Effective date: 20250723