Abstract: A hydrogen refueling station including a first and a second dispensing module having first and second dispensing pressure detection means, where supply lines are fluidly connecting a storage module to an inlet compressor line and a compressor outlet line is fluidly connecting an outlet of the compressor to a dispensing line and thereby to the first and/or second dispensing module via output compressor valves, cascade lines are fluidly connecting the hydrogen storage module and the dispenser modules thereby configured for bypassing the compressor, where a controller is configured for controlling valves and thereby a fluid path from the hydrogen storage module to the dispensing modules, the controller is configured for controlling a bypass valve based on feedback from pressure detection means, from a first dispensing pressure detection means or from a second dispensing pressure detection means to establish a required pressure in the compressor outlet line.

Abstract: Systems and methods for fueling (or charging) communication, for example between a hydrogen fueling station and a hydrogen powered vehicle (or an electric vehicle and charging station) may utilize near field communication as well as vehicle to infrastructure communication. Safety information, fueling or charging information, payment information, and other information may be transmitted, and the redundant nature of the communication permits fault recovery and improved process monitoring. In this manner, fueling and/or recharging is made safer, faster, and more efficient.

Abstract: The invention relates to a large-scale hydrogen refueling station comprising at least one supply storage, a plurality of compressor modules comprising a local controller, a plurality of dispenser modules, and a hydrogen production system comprising a hydrogen production system controller mutually connected by one or more flow paths. Wherein one of the controllers facilitates control of valves and thereby flow of hydrogen gas in the flow paths between the at least one supply storage, compressor modules, dispenser modules and hydrogen production system. Wherein the control of the valves enables flow of hydrogen gas in at least three of the flow paths simultaneously.

Abstract: A method of controlling the injection of hydraulic fluid into a high pressure diaphragm compressor having a hydraulic system, the method including: measuring a representation of pressure in a high-pressure part of the hydraulic system of the diaphragm compressor, and maintaining a desired pressure in the high-pressure part of the hydraulic system by adding hydraulic fluid to the high-pressure part of the hydraulic system under the control of a controller on the basis of the measuring of pressure.

Abstract: A high-pressure compressor having a hydraulic system and a gas chamber, where the hydraulic system includes a reservoir, connected to a hydraulic fluid chamber by a hydraulic flow path and a pump assembly positioned in the hydraulic flow path, and the compressor furthermore includes a control element controlling the flow of hydraulic fluid in the hydraulic flow path and thereby the pressure in the hydraulic fluid chamber, where the control element and the pump assembly is configured for controlling the pressure of hydraulic fluid in the hydraulic fluid chamber when the compressor is not in operation.

Abstract: The invention related to a system for control of a hydrogen refueling station. The control of the hydrogen refueling station is optimized according to a high frequency tank profile in a time period between time A and time B. The high frequency tank profile includes selecting a first of the plurality of vessels as supply to the compressor during at least part of the refueling of the vehicle tank, the selection is based on pressure of hydrogen gas in one or more vessels of the supply storage. The control of the hydrogen refueling station is furthermore optimized according to a low frequency tank profile in a time period between time C and time D. The low frequency tank profile includes preparing one or more hydrogen refueling station components to enable a plurality of vehicle tank refuelings in the subsequent time period between time A and time B.

Abstract: A closed cooling system for cooling a fluid of an open fluid system including a first heat exchanger and a compressor facilitating circulation of a refrigerant in the closed cooling system, where the refrigerant facilitates providing a solid state cooling bank which is thermally coupled to the open fluid system thereby cooling fluid conducted through the open fluid system.

Abstract: Systems and methods for fueling (or charging) communication, for example between a hydrogen fueling station and a hydrogen powered vehicle (or an electric vehicle and charging station) may utilize near field communication as well as vehicle to infrastructure communication. Safety information, fueling or charging information, payment information, and other information may be transmitted, and the redundant nature of the communication permits fault recovery and improved process monitoring. In this manner, fueling and/or recharging is made safer, faster, and more efficient.

Abstract: A hydrogen refueling system including a hydrogen center enclosure fluidly connected to a dispenser by a supply pipe, a first portion of the supply pipe disposed within the hydrogen center enclosure and a second portion of the supply pipe extending between the hydrogen center enclosure and the dispenser, a cooling system having a first cooling circuit for cooling the supply pipe and a second cooling circuit for cooling the second portion of the supply pipe, and a controller, where the second cooling circuit has a return path fluidly connected to a forward path, where the second cooling circuit is thermally connected to the second portion of the supply pipe, and the controller initiates cooling of the supply line by the forward path or return path of the second cooling circuit when the temperature of the supply line is higher than a threshold value.

Abstract: A method for refueling of gas into a pressurized gas tank with repeated adjustment of a target pressure (Ptarget) for the refueling is disclosed, said method comprising the steps of: recording starting conditions for the refueling, establishing a mathematical relation between the recorded starting conditions, the actual refueling time (t_refueling) passed and the target pressure for the refueling, starting the refueling, and repeatedly calculating the target pressure corresponding to the actual refueling time passed and measuring the nozzle pressure of the refueling station, until the calculated target pressure has been reached.

Abstract: A HRS comprising at least a HRS center module, a HRS dispenser module and a first hydrogen supply line facilitating flow of hydrogen between the HRS center module and the HRS dispenser module, the HRS center module comprises a safety controller and a process controller, wherein data is communicated between the safety controller and safety components of the HRS dispenser module via a safety communication channel, and wherein data is communicated between the process controller and process components of the HRS dispenser module via a process communication channel.

Abstract: The invention relates to a HRS for filling a vessel of a vehicle with hydrogen, the HRS 1 comprising: a basic process control system comprising a process controller, a plurality of process measuring devices, a plurality of final process elements and a plurality of associated basic process control functions facilitating monitoring and controlling the operation of the HRS, wherein the HRS further comprises a safety instrumented system comprising a safety controller, a plurality of safety measuring devices, a plurality of final safety elements a plurality of associated safety instrumented functions, wherein at least one of the final process elements and the final safety elements facilitates tripping the operation of the HRS under the control of the associated process controller or the associated safety controller respectively.

Abstract: A method of refueling a vehicle tank with hydrogen, the refueling is controlled by a refueling station controller, the method including: connecting the tank to the station, initiating the refueling process, during the refueling monitoring the temperature of the gas inside the tank, establishing a pressure stop criterion for the refueling, based on a pressure category of the tank and the monitored temperature of the gas, the establishing of the pressure stop criterion being based on a lookup in a predefined table of a plurality of pressure stop criteria, during the refueling monitoring the pressure of the gas inside the tank, by the controller comparing the pressure of the gas with the pressure stop criterion and terminating the refueling when the pressure of the gas inside the tank has reached the pressure stop criterion, and disconnecting the vehicle and the refueling station.

Abstract: A method of refueling a tank of a vehicle with a hydrogen gas from a hydrogen refueling station, including initiating flow of hydrogen gas in a hose being controlled by a controller controlling a valve, opening the valve and monitoring the temperature and pressure of the hydrogen gas in tank, based on the monitored temperature and the monitored pressure establishing an estimated state of charge during the refueling, terminating the refueling when the estimated state of charge reaches an upper state of charge being above the tank rated density, the upper state of charge being determined on the basis of a pre-estimated correction of state of charge, the pre-estimated correction of state of charge designating a decrease of the estimated state of charge in the vehicle tank after the closing of the valve disconnecting the hose between the vehicle tank and the hydrogen source.

Abstract: a hydrogen refueling system for refueling a vehicle with hydrogen. The system comprises a hydrogen supply, a hydrogen center enclosure comprising a cooling system. The cooling system is arranged for cooling the hydrogen delivered to the vehicle. The system further comprises a dispenser arranged for supplying the hydrogen to the vessel of the vehicle. A supply pipe is arranged for guiding the hydrogen from the center enclosure to the dispenser. The system further comprises a forward path arranged for guiding a supply pipe cooling media from the hydrogen center enclosure towards the dispenser, and a return path arranged for guiding at least a fraction of the supply pipe cooling media back to the hydrogen center enclosure, where at least one of the forward and return paths are thermally connected with the cooling system.

Abstract: The invention relates to a HRS for filling a vessel of a vehicle with hydrogen, the HRS 1 comprising: a basic process control system comprising a process controller, a plurality of process measuring devices, a plurality of final process elements and a plurality of associated basic process control functions facilitating monitoring and controlling the operation of the HRS, wherein the HRS further comprises a safety instrumented system comprising a safety controller, a plurality of safety measuring devices, a plurality of final safety elements a plurality of associated safety instrumented functions, wherein at least one of the final process elements and the final safety elements facilitates tripping the operation of the HRS under the control of the associated process controller or the associated safety controller respectively.

Abstract: A HRS comprising at least a HRS center module, a HRS dispenser module and a first hydrogen supply line facilitating flow of hydrogen between the HRS center module and the HRS dispenser module, the HRS center module comprises a safety controller and a process controller, wherein data is communicated between the safety controller and safety components of the HRS dispenser module via a safety communication channel, and wherein data is communicated between the process controller and process components of the HRS dispenser module via a process communication channel.

Abstract: The present invention comprises a module for an electrolyzer of filterpress type comprising at least one closed frame defining at least one first opening, wherein said module comprises a sealing and electric insulating material, wherein said material at least partly covers the surface of the frame. In addition the present invention comprises a method for producing a module for an electrolyzer of filterpress type and use thereof.

Abstract: A method for the operation and control of gas filling from a filling station to a receiver is comprising actively controlling essential filling variables within the receiver such as temperature, pressure, and density of the gas; continuously updating estimates of the filling variables based on filling station side measurements interpreted using physical and thermodynamic relations as to make the variables available even when the receiver is not communicating with the filling station in so-called non-communication fueling; and continuously updating the estimated capacity of the receiver based on station side measurements in a non-communication fueling.

Abstract: The present invention relates to a device for storing gas under pressure comprising an inner cylindrical pressure vessel (1), the pressure vessel (1) comprising pipe connection (7). According to the present invention, the device is characterized in that the inner cylindrical pressure vessel (1) is arranged inside an outer vessel (3), whereby a substantially annular space (2) is formed between the inner pressure vessel (1) and the outer vessel (3), wherein the annular space (2) between the inner pressure vessel (1) and the outer vessel (3) is filled with a fluid, the outer vessel (3) further comprising venting means (5) at or in the vicinity of the highest point (4, 6) of the outer vessel (3).