A system for supplying energy to electrically operated mining machines, which system includes a hybrid power-generation arrangement for outputting electricity for the mining machines, a cable routing system for routing at least one power cable from the hybrid power-generation arrangement to the mining machines, and at least one energy source for supplying energy to the hybrid power-generation arrangement, wherein the hybrid power-generation arrangement has an electrochemical energy store, a fuel cell and an internal combustion engine generator.

A wind turbine includes a generator, a base, a nacelle, a tower having a first end mounted to the base and a second end supporting the nacelle, and an electrolytic unit electrically powered by the generator to produce hydrogen from an input fluid, in particular water, wherein the electrolytic unit is electrically coupled to the generator by an electric connection, wherein the electrolytic unit is housed in a housing, wherein the housing includes a pressure-relief section configured to detach from the housing in the event of an explosion inside the housing or when the pressure inside the housing exceeds a predetermined pressure.

A wind turbine includes a generator, a base, a nacelle, a tower having a first end mounted to the base and a second end supporting the nacelle, and an electrolytic unit electrically powered by the generator to produce hydrogen from an input fluid, in particular water, wherein the electrolytic unit is electrically coupled to the generator by an electric connection, wherein the electrolytic unit is housed in a housing, wherein the housing includes a pressure-relief section configured to detach from the housing in the event of an explosion inside the housing or when the pressure inside the housing exceeds a predetermined pressure.

A system and method by which energy from ocean waves is converted into hydrogen, and that hydrogen is used to manifest electrical and mechanical energies by an energy consuming device. A portion of the generated electrical power is communicated to water electrolyzers which produce oxygen and hydrogen from water as gases. At least a portion of the generated hydrogen gas is transferred to a transportation ship via a hose-carrying, remotely operated (or otherwise unmanned) vehicle, and subsequently transferred to an energy-consuming module or infrastructure, where a portion of the hydrogen is consumed in order to manifest a generation of electrical energy, a mechanical motion, and/or a chemical reaction.

This invention relates to an arrangement to optimize the production of hydrogen, the arrangement comprising at least a solar energy unit (12) and a wave and/or tidal energy recovery system (2), which are arranged to produce renewable energy, a water purification unit (5) and an electrolysis unit (9), which is arranged to produce hydrogen from pure water produced by the water purification unit (5), and the electrolysis unit (9) and the water purification unit (5) are powered by the renewable energy produced by the solar energy unit (12) and the wave and/or tidal energy recovery system (2). The arrangement comprises a buffer unit (6), into which pure water is supplied from the water purification unit (5) during periods when the production of the renewable energy exceeds the need of energy of the electrolysis unit (9).

A wind powered hydrogen generator with storage that is decoupled from an electric grid. A start-up fuel cell provides power to the generator to energize the generator's field coils, to the pitch adjustable blades to adjust pitch of the blades to maintain rotation rate of the rotor, and to power the yawing motor. Electrolyzers are stacked in the tower to generate hydrogen, which is stored in hydrogen impermeable piping mounted on the tower to receive hydrogen for storage and to provide hydrogen to the start-up fuel cell. The invention can be sited in locations having wind speeds within the operating range of wind speeds, regardless of whether connection can be made to the electric grid.

A wind powered hydrogen generator with storage that is decoupled from an electric grid. A start-up fuel cell provides power to the generator to energize the generator's field coils, to the pitch adjustable blades to adjust pitch of the blades to maintain rotation rate of the rotor, and to power the yawing motor. Electrolyzers are stacked in the tower to generate hydrogen, which is stored in hydrogen impermeable piping mounted on the tower to receive hydrogen for storage and to provide hydrogen to the start-up fuel cell. The invention can be sited in locations having wind speeds within the operating range of wind speeds, regardless of whether connection can be made to the electric grid.

A wind turbine comprising at least two separate units assembled to form a nacelle connected to a wind turbine tower. A first of said two units houses a rotor-supporting assembly and a generator. To enable a large degree of flexibility and the ability to reconfigure, a second of said two units houses an electrolysis cell stack powered by the generator.

A wind turbine comprising at least two separate units assembled to form a nacelle connected to a wind turbine tower. A first of said two units houses a rotor-supporting assembly and a generator. To enable a large degree of flexibility and the ability to reconfigure, a second of said two units houses an electrolysis cell stack powered by the generator.

A power control device for a hydrogen system according to the present embodiment is a power control device configured to control a supply of generated power generated by a renewable energy generation device, and includes an acquirer and a controller. The acquirer acquires information related to an amount of power sale in a predetermined period. The controller controls the power supplier of the renewable energy generation device to sell power from the generated power, such that the integrated value of the power sale in time series in a predetermined period becomes the power sale amount. The controller makes an average value of the power sale in a first period within the predetermined period larger than the average value of a second period within the predetermined period after the first period.