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Hidrógeno electrolítico

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SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, WATER ELECTROLYSIS DEVICE, AND HYDROGEN PRODUCTION METHOD

NºPublicación:  WO2025143151A1 03/07/2025
Solicitante: 
AGC INC [JP]
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Resumen de: WO2025143151A1

Provided are a solid polymer electrolyte membrane having superior chemical durability, a membrane electrode assembly, and a water electrolysis device. The solid polymer electrolyte membrane according to the present disclosure comprises: a first membrane that contains a fluorine-containing polymer having an ion exchange group, and cerium oxide; and a second membrane that contains a fluorine-containing polymer having an ion exchange group and has a cerium oxide concentration lower than that of the first membrane. When the ratio of the thickness of the first membrane to the total thickness of the first membrane and the second membrane at an end part of the solid polymer electrolyte membrane is defined as ratio X, and the ratio of the thickness of the first membrane to the total thickness of the first membrane and the second membrane at the center of the solid polymer electrolyte membrane is defined as ratio Y, ratio X is greater than ratio Y.

PLANT AND METHOD FOR TREATING SULPHIDE-CONTAINING GASES AND FOR RECOVERING SULPHUR BY HIGH-TEMPERATURE ELECTROLYSIS UNIT COUPLING

NºPublicación:  WO2025141013A1 03/07/2025
Solicitante: 
GENVIA [FR]
SCHLUMBERGER TECH CORPORATION [US]
SCHLUMBERGER CANADA LTD [CA]
SERVICES PETROLIERS SCHLUMBERGER [FR]
SCHLUMBERGER TECH B V [NL]
GENVIA,
SCHLUMBERGER TECHNOLOGY CORPORATION,
SCHLUMBERGER CANADA LIMITED,
SERVICES P\u00C9TROLIERS SCHLUMBERGER,
SCHLUMBERGER TECHNOLOGY B.V

Resumen de: WO2025141013A1

The invention relates to a plant for treating gases containing hydrogen sulphide (H2S), the plant comprising: - a Claus-type sulphur recovery unit (1), the sulphur recovery unit (1) receiving, as input: a first stream comprising a gas containing H2S and a second stream comprising a gas that comprises O2; - a high-temperature steam electrolysis unit receiving, as input, a first stream comprising water vapour and supplying, as output, a second stream comprising O2 gas and a third stream comprising H2 gas. The invention is characterised in that the plant further comprises a water vapour forming unit (3) comprising means for recovering the heat from the sulphur recovery unit (1), this heat being used to produce at least some of the water vapour of the first stream received by the electrolysis unit.

A METHOD OF TRANSPORTING HYDROGEN

NºPublicación:  WO2025140933A1 03/07/2025
Solicitante: 
B9 TECH LIMITED [GB]
B9 TECHNOLOGIES LIMITED

Resumen de: WO2025140933A1

A method of transporting hydrogen comprising: forming an alcohol from hydrogen and carbon dioxide; transporting said alcohol; breaking down said alcohol to form carbon dioxide and hydrogen; using said hydrogen as a fuel; and capturing said carbon dioxide to transport for reuse in generating more alcohol.

INCREASED OXYGEN OUTLET PRESSURE IN AN ELECTROLYZER

NºPublicación:  WO2025140991A1 03/07/2025
Solicitante: 
KYROS HYDROGEN SOLUTIONS GMBH [DE]
KYROS HYDROGEN SOLUTIONS GMBH
US_2025215576_A1

Resumen de: WO2025140991A1

Systems and methods for increased oxygen output from an electrolyzer system are provided. The electrolyzer system includes a water storage tank. The electrolyzer system also includes an electrolyzer in fluid communication with the water storage tank and configured to produce oxygen and hydrogen from water e.g., (H2O). The electrolyzer system also includes one or more pressure isolating components configured to increase the oxygen output pressure of the system by pressure isolating the water storage tank from the electrolyzer stack.

CATALYST, IN PARTICULAR FOR CRACKING AMMONIA, METHOD FOR PREPARING THE CATALYST AND METHOD FOR SYNTHESISING HYDROGEN

NºPublicación:  WO2025141005A1 03/07/2025
Solicitante: 
ENERCAT [FR]
LYNAS RARE EARTHS LTD [AU]
ENERCAT,
LYNAS RARE EARTHS LIMITED
FR_3157228_PA

Resumen de: WO2025141005A1

The invention relates to a catalyst for the decomposition of ammonia into hydrogen and nitrogen, wherein the catalyst comprises at least ruthenium, mesoporous cerium oxide and at least one oxide selected from among cobalt, nickel and iron oxides, preferably nickel oxide, and to a method for producing hydrogen from ammonia comprising the following steps in this order: activating at least one catalyst according to the invention at a temperature ranging from 300°C to 600°C under a stream of a reducing gas; bringing the activated catalyst into contact with a gas to be treated comprising ammonia at a temperature ranging from 200°C to 800°C, and at a pressure ranging from atmospheric pressure to 100 bar.

Elektrolysesystem zur Gewinnung von Wasserstoff und Verfahren zum Betreiben desselben

NºPublicación:  DE102024126314A1 03/07/2025
Solicitante: 
QUEST ONE GMBH [DE]
Quest One GmbH
DE_102024126314_PA

Resumen de: DE102024126314A1

Elektrolysesystem (20) zur Gewinnung von Wasserstoff, mit mindestens einer Elektrolysevorrichtung (23), die zur Gewinnung des Wasserstoffs aus Prozesswasser mit Hilfe von elektrischem Strom eingerichtet, mit einem von dem Prozesswasser durchströmten Prozesswasserkreislauf (21), in den zusätzlich zu der mindestens einen Elektrolysevorrichtung (23) ein Wärmetauscher (24) eingebunden ist, der ferner in einen Kühlwasserkreislauf (22) eingebunden ist, und der eingerichtet ist, das Prozesswasser dadurch bedarfsweise zu kühlen, dass Wärme des Prozesswassers über den Wärmetauscher (24) auf durch den Kühlwasserkreislauf strömendes Kühlwasser übertragbar ist, wobei dem Prozesswasserkreislauf (21) ferner mindestens eine Heizeinrichtung (26) zugeordnet ist, die eingerichtet ist, das Prozesswasser bedarfsweise zu erwärmen.

SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, WATER ELECTROLYSIS DEVICE, AND METHOD FOR PRODUCING HYDROGEN

NºPublicación:  WO2025143145A1 03/07/2025
Solicitante: 
AGC INC [JP]
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Resumen de: WO2025143145A1

The present invention provides: a solid polymer electrolyte membrane which is excellent in terms of low gas permeability; a membrane electrode assembly; and a water electrolysis device. A solid polymer electrolyte membrane according to the present disclosure comprises: a first membrane which contains a fluorine-containing polymer that has an ion exchange group, and a platinum-containing material; and a second membrane which contains a fluorine-containing polymer that has an ion exchange group, and which has a lower concentration of the platinum-containing material than the first membrane. If a ratio X is the ratio of the thickness of the first membrane to the total thickness of the thickness of the first membrane and the thickness of the second membrane at an end of the solid polymer electrolyte membrane, and a ratio Y is the ratio of the thickness of the first membrane to the total thickness of the thickness of the first membrane and the thickness of the second membrane at the central part of the solid polymer electrolyte membrane, the ratio X is greater than the ratio Y.

SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE-ELECTRODE ASSEMBLY, WATER ELECTROLYSIS DEVICE, METHOD FOR PRODUCING HYDROGEN, AND METHOD FOR PRODUCING SOLID POLYMER ELECTROLYTE MEMBRANE

NºPublicación:  WO2025143156A1 03/07/2025
Solicitante: 
AGC INC [JP]
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Resumen de: WO2025143156A1

Provided is a solid polymer electrolyte membrane that resists tearing and, when employed in a water electrolysis device, resists the generation of pinholes. The solid polymer electrolyte membrane contains an ion-exchange group-bearing fluoropolymer and a woven fabric composed of a warp and a weft. When the solid polymer electrolyte membrane is observed from the direction normal to a surface of the solid polymer electrolyte membrane, the standard deviation on the area of regions delimited by the warp and the weft is 0.10 × 104 to 2.0 × 104 μm2.

HYDROGEN GAS PURIFICATION METHOD, HYDROGEN GAS PURIFICATION SYSTEM, HYDROGEN GAS REGENERATION METHOD, AND HYDROGEN GAS REGENERATION SYSTEM

NºPublicación:  WO2025143640A1 03/07/2025
Solicitante: 
DONGJIN SEMICHEM CO LTD [KR]
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Resumen de: WO2025143640A1

Disclosed is a hydrogen gas purification method for increasing the recovery rate and purity of purified hydrogen gas. According to one aspect, provided is a hydrogen gas purification method comprising purifying a mixed gas produced by an electrolysis method and containing chlorine gas and hydrogen gas.

SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, WATER ELECTROLYSIS DEVICE, METHOD FOR PRODUCING HYDROGEN, AND METHOD FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY

NºPublicación:  WO2025143203A1 03/07/2025
Solicitante: 
AGC INC [JP]
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Resumen de: WO2025143203A1

The present disclosure addresses the problem of providing a solid polymer electrolyte membrane which is capable of suppressing occurrence of curl and suppressing crossover of hydrogen. The present disclosure also addresses the problem of providing: a membrane electrode assembly; a water electrolysis device; and a method for producing a membrane electrode assembly. A solid polymer electrolyte membrane according to the present disclosure comprises: a first layer that contains a first fluorine-containing polymer which has an ion exchange group and a platinum-containing material; and a second layer that contains a second fluorine-containing polymer which has an ion exchange group. The concentration of the platinum-containing material in the second layer is lower than the concentration of the platinum-containing material in the first layer, and the ion exchange capacity of the first fluorine-containing polymer is higher than the ion exchange capacity of the second fluorine-containing polymer. This solid polymer electrolyte membrane further has a reinforcement body that is disposed closer to the first layer-side surface of the solid polymer electrolyte membrane than the center position of the solid polymer electrolyte membrane in the thickness direction.

SOLID POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, WATER ELECTROLYSIS DEVICE, METHOD FOR PRODUCING HYDROGEN, AND METHOD FOR PRODUCING MEMBRANE ELECTRODE ASSEMBLY

NºPublicación:  WO2025143143A1 03/07/2025
Solicitante: 
AGC INC [JP]
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Resumen de: WO2025143143A1

Provided is a solid polymer electrolyte membrane which is capable of suppressing an increase in electrolytic voltage after water electrolysis is performed for a certain period, and in which pinholes are hardly generated. This solid polymer electrolyte membrane includes: a fluorine-containing polymer having an ion exchange group; a platinum-containing material; aggregates of cerium oxide particles; and a woven fabric. The average particle diameter of the aggregates is 0.1-10 μm.

HYDROGEN ELECTROCHEMICAL SYSTEM, METHOD FOR DETERMINING STATE OF HYDROGEN CELL STACK, AND PROGRAM

NºPublicación:  WO2025142931A1 03/07/2025
Solicitante: 
HORIBA LTD [JP]
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Resumen de: WO2025142931A1

In the present invention, a hydrogen electrochemical system 100 comprises an acquisition unit 541, a storage unit 53, and a determination unit 544. The acquisition unit 541 acquires at least distribution information Ds2, De2, and Dt2 indicating the distribution of a physical quantity Q in a hydrogen cell stack 1. In the hydrogen cell stack 1, water is generated by an electrochemical reaction in which hydrogen is used, or vice versa. The storage unit 53 stores correlation data Dc. The correlation data Dc indicates a correlation between the state of the hydrogen cell stack 1 and a feature amount φ that is converted from at least the information Ds2 and De2 regarding the distribution in the hydrogen cell stack 1 in a state including a normal state and one or more abnormal states. On the basis of the correlation information Dc, the determination unit 544 determines the state of the hydrogen cell stack 1 from at least the distribution information Dt2 of the hydrogen cell stack 1 in operation.

METHANOL PRODUCTION METHOD AND METHANOL PRODUCTION DEVICE

NºPublicación:  WO2025142740A1 03/07/2025
Solicitante: 
MITSUBISHI GAS CHEMICAL COMPANY INC [JP]
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Resumen de: WO2025142740A1

A methanol production method comprising: a step (A) for acquiring a synthesis gas comprising at least carbon dioxide and hydrogen; a step (B) for reacting the synthesis gas in the presence of a catalyst to obtain a methanol mixture; a step (C) for distilling the methanol mixture to separate out each of methanol, a distillation waste liquid, and distillation wastewater; and a step (D) for subjecting the distillation waste liquid and/or the distillation wastewater to an organic matter decomposition treatment to obtain a decomposition gas and treated water.

WATER ELECTROLYSIS DEVICE AND OPERATION CONTROLLING METHOD FOR WATER ELECTROLYSIS DEVICE

NºPublicación:  WO2025142261A1 03/07/2025
Solicitante: 
TOYOTA MOTOR KYUSHU INC [JP]
KYUSHU UNIV NATIONAL UNIV CORPORATION [JP]
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Resumen de: WO2025142261A1

In order to provide a water electrolysis device and an operation controlling method for the water electrolysis device which, when the operation is stopped, are capable of reducing energy consumption and suppressing deterioration of an electrolyte membrane due to hydrogen peroxide generated in a cathode-side hydrogen flow passage when the operation is stopped, this operation controlling method for a water electrolysis device having at least one water electrolysis cell which is divided into an anode-side oxygen flow passage 5 and a cathode-side hydrogen flow passage 6 by an electrolyte membrane, electrolyzes pure water supplied to the oxygen flow passage 5, and discharges hydrogen from the hydrogen flow passage 6 comprises: supplying pure water to the oxygen flow passage 5 during the operation of the water electrolysis device; when the operation of the water electrolysis device is stopped, stopping the supply of pure water to the oxygen flow passage 5, and supplying pure water to the hydrogen flow passage 6 for a prescribed period of time and discharging the same to the outside; and then stopping the supply of pure water to the hydrogen flow passage 6.

BATCH SYSTEMS AND METHODS FOR HYDROGEN GAS EXTRACTION FROM A LIQUID HYDROGEN CARRIER

NºPublicación:  AU2025204349A1 03/07/2025
Solicitante: 
ELECTRIQ GLOBAL ENERGY SOLUTIONS LTD
Electriq-Global Energy Solutions Ltd
AU_2025204349_A1

Resumen de: AU2025204349A1

Abstract: A system for extracting hydrogen gas from a liquid hydrogen carrier may include a hydrogen gas reactor, a catalyst for facilitating extraction of the hydrogen gas from the liquid hydrogen carrier, and a reservoir for containing the liquid hydrogen carrier and a spend liquid hydrogen carrier. The system may be configured to regulate a flow of liquid hydrogen carrier in and out of the hydrogen gas reactor, to move a catalyst relative to a volume of the liquid hydrogen carrier, and to provide a continuous flow of the hydrogen gas, in response to a demand for the hydrogen gas. Abstract: A system for extracting hydrogen gas from a liquid hydrogen carrier may include a hydrogen gas reactor, a catalyst for facilitating extraction of the hydrogen gas from the liquid hydrogen carrier, and a reservoir for containing the liquid hydrogen carrier and a spend liquid hydrogen carrier. The system may be configured to regulate a flow of liquid hydrogen carrier in and out of the hydrogen gas reactor, to move a catalyst relative to a volume of the liquid hydrogen carrier, and to provide a continuous flow of the hydrogen gas, in response to a demand for the hydrogen gas. un b s t r a c t : s y s t e m f o r e x t r a c t i n g h y d r o g e n g a s f r o m a l i q u i d h y d r o g e n c a r r i e r m a y i n c l u d e a h y d r o g e n g a s r e a c t o r , a c a t a l y s t f o r f a c i l i t a t i n g e x t r a c t i o n o f t h e h y d r o g e n g a s f r o m t h e l i q u i d h y

WATER ELECTROLYZER CELLS AND METHODS FOR ELECTROLYZING WATER

NºPublicación:  US2025214034A1 03/07/2025
Solicitante: 
LUDLOW DARYL J [US]
Ludlow Daryl J
US_2025214034_A1

Resumen de: US2025214034A1

Hydrogen gas purifier electrochemical cells, systems for purifying hydrogen gas, and methods for purifying hydrogen gas are provided. The cells, systems, and methods employ double membrane electrode (DMEA) electrochemical cells that enhance purification while avoiding the complexity and cost of conventional cells. The purity of the hydrogen gas produced by the cells, systems, and methods can be enhanced by removing at least some intermediate gas impurities from the cells. The purity of the hydrogen gas produced by the cells, systems, and methods can also be enhanced be introducing hydrogen gas to the cells to replenish any lost hydrogen. Water electrolyzing electrochemical cells and methods of electrolyzing water to produce hydrogen gas are also disclosed.

CARBON DIOXIDE SEQUESTRATION WITH MAGNESIUM HYDROXIDE AND REGENERATION OF MAGNESIUM HYDROXIDE

NºPublicación:  US2025214037A1 03/07/2025
Solicitante: 
CARBONFREE CHEMICALS HOLDINGS LLC [US]
CARBONFREE CHEMICALS HOLDINGS, LLC
US_2025214037_A1

Resumen de: US2025214037A1

Embodiments of the present disclosure are directed to systems and methods of removing carbon dioxide from a gaseous stream using magnesium hydroxide and then regenerating the magnesium hydroxide. In some embodiments, the systems and methods can further comprise using the waste heat from one or more gas streams to provide some or all of the heat needed to drive the reactions. In some embodiments, magnesium chloride is primarily in the form of magnesium chloride dihydrate and is fed to a decomposition reactor to generate magnesium hydroxychloride, which is in turn fed to a second decomposition reactor to generate magnesium hydroxide.

APPARATUS FOR TREATMENT OF ELECTRODES

NºPublicación:  US2025215602A1 03/07/2025
Solicitante: 
LATENT DRIVE LTD [GB]
Latent Drive Ltd
US_2025215602_A1

Resumen de: US2025215602A1

Apparatus is provided for treating an electrode in an electrochemical cell. The electrode is treated to evolve catalytic oxide layers on the electrode surface, which make the electrode suitable for use in hydrogen production. The apparatus includes a signal generator, a switching arrangement, and a filtering stage including a differential choke and the common mode choke, to supply power to the electrochemical cell for commercial scale treatment and production of electrodes.

ELECTROLYSIS SYSTEM AND OPERATION METHOD THEREOF

NºPublicación:  US2025215591A1 03/07/2025
Solicitante: 
H2PRO LTD [IL]
H2PRO LTD
US_2025215591_A1

Resumen de: US2025215591A1

Electrolysis techniques and system implementations are disclosed comprising a plurality of reactors, each comprising electrolysis electrodes and configured to carry out a sequence of phases of an electrolysis process phase-shifted with respect to a sequence of phases of the electrolysis process carried out by at least another one of said plurality of reactors, one or more power sources for driving the electrolysis processes carried out by the plurality of reactors, and a control system configured to monitor changes in a power capacity of at least one of the one or more power sources and based thereon perform at least one of the following: (i) activate or deactivate one or more of the electrolysis processes carried out by the plurality of reactors, (ii) adjust a time duration of at least one of the phases of the electrolysis process; (iii) adjust the power supplied to at least one of the plurality of reactors from the one or more power sources; and/or (iv) adjust, remove or introduce, at least one phase of the electrolysis process.

GAS-PERMEABLE ELECTRONICALLY CONDUCTIVE PLATE FOR USE AS POROUS TRANSPORT LAYER FOR AN ELECTROLYZER

NºPublicación:  US2025215588A1 03/07/2025
Solicitante: 
BASF SE [DE]
BASF SE
US_2025215588_A1

Resumen de: US2025215588A1

Described are a gas-permeable electronically conductive plate for use as porous transport layer for an electrolyzer and a process for preparing said gas-permeable electronically conductive plate. a building unit for an electrolyzer, and an electrolyzer.

Ultra-High Efficiency Hydrogen Hybrid Regenerative Thermodynamic System

NºPublicación:  US2025215587A1 03/07/2025
Solicitante: 
GURIN MICHAEL [US]
Gurin Michael
US_2025215587_A1

Resumen de: US2025215587A1

The present invention relates to a non-combustion heat source preferably integrated with a net-positive electricity hydrogen production system and integral feedforward control system maximizing value creation by enabling superior high-radiant heat transfer and energy efficiency while minimizing carbon dioxide footprint. The feedforward control system further enhances broad system performance including determining optimal combustion emissivity and waste heat recovery operations.

ELECTROLYTE MEMBRANE, ELECTROLYTE MEMBRANE WITH CATALYST LAYER, MEMBRANE ELECTRODE ASSEMBLY, AND WATER ELECTROLYSIS DEVICE

NºPublicación:  US2025215590A1 03/07/2025
Solicitante: 
TORAY IND INC [JP]
TORAY INDUSTRIES, INC
US_2025215590_A1

Resumen de: US2025215590A1

An object of the present invention is to provide an electrolyte membrane having a good durability when performing water electrolysis. The gist of the present invention is an electrolyte membrane including: a first electrolyte layer having a first main surface and a second main surface; and a second electrolyte layer provided on the first main surface of the first electrolyte layer; wherein the first electrolyte layer has a thickness of 40 μm or more and 250 μm or less, and contains a polymer electrolyte; and wherein the second electrolyte layer contains a polymer electrolyte and carbon particles.

INCREASED OXYGEN OUTLET PRESSURE IN AN ELECTROLYZER

NºPublicación:  US2025215576A1 03/07/2025
Solicitante: 
KYROS HYDROGEN SOLUTION S GMBH [DE]
Kyros Hydrogen Solution s GmbH
US_2025215576_A1

Resumen de: US2025215576A1

Systems and methods for increased oxygen output from an electrolyzer system are provided. The electrolyzer system includes a water storage tank. The electrolyzer system also includes an electrolyzer in fluid communication with the water storage tank and configured to produce oxygen and hydrogen from water e.g., (H2O). The electrolyzer system also includes one or more pressure isolating components configured to increase the oxygen output pressure of the system by pressure isolating the water storage tank from the electrolyzer stack.

TRANSFORMER COUPLED MODULAR MULTILEVEL CONVERTER AS RECTIFIER FOR HYDROGEN ELECTROLYSER

NºPublicación:  US2025219549A1 03/07/2025
Solicitante: 
HITACHI ENERGY LTD [CH]
Hitachi Energy Ltd
CN_119137846_PA

Resumen de: US2025219549A1

A system comprises at least one transformer for galvanically isolating the system from an electrical power grid and adapting an input voltage level associated with an alternating current received from the electrical power grid. A converter unit connected to the transformer is configured to convert the alternating current into a direct current output between a positive pole and a negative pole. The converter unit comprises at least one modular multilevel converter comprising at least two converter branches. Each branch comprises a converter cell and an inductor. One branch is connected from an AC line of the transformer to the positive pole and another branch is connected from the AC line to the negative pole. An electrolyser unit may be arranged between the positive and negative poles, and a control unit may be configured to control the direct current output based on a reference value.

METHODS TO PROVIDE ELECTRIC POWER FROM RENEWABLE ENERGY EQUIPMENT TO AN ELECTRICAL LOAD

Nº publicación: US2025219421A1 03/07/2025

Solicitante:

SHELL USA INC [US]
SHELL USA INC

AU_2025202132_A1

Resumen de: US2025219421A1

An HVDC system comprising an AC/DC converter sub-system electrically connected to a renewable energy equipment and a VSC sub-system is provided. A method comprises operating the renewable energy equipment to function as a voltage source to energize an HVDC link between the AC/DC converter sub-system and the VSC sub-system; operating the VSC sub-system as a voltage source to energize an electrical load electrically connected thereto; if it is determined the power production rate of the renewable energy equipment is not within a designated parameter, operating the equipment to follow the VSC sub-system such that controlling the AC electric power output influences the power production rate. If it is within the designated parameter, operating the VSC sub-system to follow the renewable energy equipment such that the VSC sub-system adjusts the properties of its AC electric output to match the properties of the electric power generated by the renewable energy equipment.

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