Matches 1 - 50 out of 313 1 2 3 4 5 6 7 >


Match Document Document Title
US20110189569 AUTO-LEARNING OF BASE STACK RESISTANCE FOR HFR BASED RH CONTROL  
A method for determining membrane humidification by determining the membrane protonic resistance of a fuel cell stack at humidified conditions, and normalizing the base resistance of the fuel cell...
US20120028150 POWER PLANT FUSE ARRANGEMENT  
An exemplary power plant assembly includes a plurality of cell stack assemblies each having a plurality of fuel cells and a manifold. A fuse includes an indicator that provides an output when the...
US20050084723 Fuel cell system  
A fuel cell system which includes: a fuel cell having an electrolyte membrane; a tank for storing water for humidifying the electrolyte membrane; a pump for circulating the water through the tank...
US20060063048 Optimal temperature tracking for necessary and accurate thermal control of a fuel cell system  
A temperature control scheme for a fuel cell stack thermal sub-system in a fuel cell system. The thermal sub-system includes a coolant loop directing the cooling fluid through the stack, a pump...
US20150244011 Electrochemical Impedance Spectroscopy (EIS) Analyzer And Method of Using Thereof  
Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy (“EIS”) to be performed on multiple...
US20150147670 SOLID OXIDE FUEL CELL SYSTEM  
A suitable control in a system provided with a solid oxide fuel cell at the time of paralleling-off from a grid power source and switching to an autonomous operation, is provided. The generated...
US20060046116 Series type air supply system for fuel cell-powered vehicles  
A series type air supply system for fuel cell-powered vehicles wherein a low speed air supplier and a high speed air supplier are connected in a series for performance of a multi-staged...
US20080096064 Current: A Total Energy Management System  
The invention is a complete energy management system that utilizes renewable energy to generate electricity, makes hydrogen via electrolysis and then utilizes hydrogen to generate electricity on...
US20100323260 FUEL CELL SYSTEM  
A fuel cell system capable of adequately controlling the water content of a fuel cell is provided. An impedance reference value is stored in a memory for an impedance comparator. The impedance...
US20120225366 IDENTIFYING FUEL CELL DEFECTS  
A test system for testing a unit such as multiple solid oxide fuel cells. The test system includes a thermal test chamber in which a non-contact electrostatic voltage probe is mounted to scan the...
US20090246577 FUEL CELL CABINET WASTE WATER MANAGEMENT SYSTEM  
A waste water management system for a fuel cell cabinet is provided. The waste water management system includes a sealed device that collects and manages the flow of the water from a fuel cell....
US20110033764 FUEL CELL SYSTEM WITH WETNESS SENSOR  
A fuel cell system may have at least one sensor including a pair of electrodes disposed on a substrate. The sensor may be configured to produce an output signal having a magnitude that is...
US20060216556 Gas flow control assembly for use with fuel cell systems operating on fuels with varying fuel composition  
A gas flow control assembly for use in a fuel cell system comprising an airflow control assembly for adjusting flow of air to a cathode side of the fuel cell system based on content variations in...
US20060216560 Fuel cell systems  
A fuel cell system wherein system components are arranged to facilitate the transfer of heat from those components which generate heat in operation to those which cool in operation.
US20150263359 ELECTRICAL SIGNAL PROCESSING SYSTEM FOR FUEL CELL STACK  
A system and method for processing the electric signals from a plurality of fuel cells in a fuel cell system is disclosed. Groups of the plurality of fuel cells, such as five bipolar plates, are...
US20150249280 Fuel Cell System to Power a Portable Computing Device  
The disclosed embodiments relate to the design of a portable and cost-effective fuel cell system for a portable computing device. This fuel cell system includes a fuel cell stack which converts...
US20110311895 FUEL CELL SYSTEM TO POWER A PORTABLE COMPUTING DEVICE  
The disclosed embodiments relate to the design of a portable and cost-effective fuel cell system for a portable computing device. This fuel cell system includes a fuel cell stack which converts...
US20070243433 Reformer with a plurality of heaters and fuel cell system using the same  
Disclosed are a reformer with a plurality of heaters for precisely controlling the temperature thereof, and a fuel cell system using the same. The fuel cell system is constructed with an electric...
US20050031916 Electronic apparatus, fuel tank unit, and method of controlling a power supply for the electronic apparatus  
The body of an electronic apparatus houses a DMFC unit which produces energy by causing methanol supplied as fuel to react with oxygen. The body further houses a cartridge fuel tank which holds...
US20070065695 Coolant flow estimation for the thermal loop of a fuel cell system using stack loss power  
A thermal sub-system for a fuel cell system that calculates a desired volume flow or mass flow of a cooling fluid pumped through a fuel cell stack solely on thermal stack power loss and cooling...
US20080026263 Startup circuit for electronics in a hazardous environment  
A fuel cell system includes a first subsystem that is classified to operate in a hazardous environment and a second subsystem that is classified to operate in a hazardous environment. The second...
US20150244012 METHOD FOR SUPPLYING AIR TO A FUEL CELL  
A method for supplying air to a fuel cell (2), using a controllable air conveying device (7) which delivers an air mass flow for a cathode chamber (4) of the fuel cell (2), and using at least one...
US20090068521 Cooling System for a Fuel Cell  
The invention relates to a cooling system (13) for a fuel cell (1) having at least one cooler (14), a thermostat (18), a pump (15) for conveying a coolant (17) in a cooling circuit (16), and an...
US20140089055 Fuel Cell Fleet Optimization  
A fuel cell fleet has a plurality of fuel cell systems each connected to a data server. The data server may be configured to obtain operational data from of the plurality of fuel cell systems. An...
US20140349201 FUEL CELL ASSEMBLY AND METHOD OF CONTROL  
An exemplary method includes of operating a fuel cell at a first power output level that includes a plurality of operation parameters. Each operation parameter has a value to satisfy a first power...
US20060029856 Modular electrochemical power system  
Electrochemical power systems of modular design are provided. In accordance with one embodiment of the present invention, an electrochemical power system is provided comprising a container, at...
US20100330440 METHOD OF OPERATING FUEL CELL WITH HIGH POWER AND HIGH POWER FUEL CELL SYSTEM  
A fuel cell is operated with high power such that which a humidified gas and a dry gas are selectively supplied as oxidant to a cathode of the fuel cell. This method includes (S1) supplying a...
US20050084724 Regenerative compressor motor control for a fuel cell power system  
A variable capacity compressor that is operable in a normal mode and either an upward or downward rapid transient mode includes a compressor that compresses a fluid and a motor that drives the...
US20060280978 Fuel cell system running on high pressure gas and process for controlling the system  
Disclosed is a fuel cell system which includes a fuel cell, a high-pressure tank for containing a fuel, a supply device for delivering the fuel of the high-pressure tank to the fuel cell, a fuel...
US20080187803 Use of Wax Elements as Passive Control Devices in Fuel Cell Power Systems  
A fuel cell system that employs one or more wax elements to provide passive control. In one embodiment, a wax element device is positioned within a coolant stream pipe. The wax element device...
US20140120440 COOLANT FLOW PULSING IN A FUEL CELL SYSTEM  
Systems and methods to control the delivery of coolant to a coolant loop within a vehicular fuel cell system. During periods of low power output from one or more fuel cell stacks, operation of a...
US20070253875 Hydrogen supply for micro fuel cells  
A disposable, compact, and efficient storage apparatus (10) contains a fuel source (24) and water for supplying hydrogen fuel (36) to a micro-fuel cell. The storage apparatus comprises a housing...
US20130164644 SYSTEM AND METHOD FOR CONTROLLING PRESSURE OSCILLATION IN ANODE OF FUEL CELL STACK  
Disclosed is a system and method for controlling pressure oscillation in an anode of a fuel cell stack. In particular, an electronic control unit is configured to determine operation information...
US20140120434 METHOD FOR DETERMINING MEMBRANE PROTONIC RESISTANCE OF A FUEL CELL STACK  
A method for determining membrane humidification by determining the membrane protonic resistance of a fuel cell stack at humidified conditions, and normalizing the base resistance of the fuel cell...
US20080152987 Fuel cell system and vehicle with fuel cell system mounted thereon  
A fuel cell system of the invention includes a tubular switching member 70 with slits 70a to shift their position and thereby vary an opening area of outlets of oxidizing gas conduits 36 in...
US20110070512 Device and method for determining the operating parameters of individual fuel cells or short stacks of fuel cells  
The invention relates to a device and a method for determining the operating parameters of individual cells or short stacks of fuel cells, preferably of medium-temperature or high-temperature fuel...
US20150024298 SYSTEM AND METHOD FOR TUNING AN ELECTROCHEMICAL CELL STACK  
The present disclosure is directed to a method for tuning the performance of at least one electrochemical cell of an electrochemical cell stack. The method includes supplying power to an...
US20060263656 Power system with reformer  
The present invention is a power system using a reformer/fuel cell arrangement as the primary source of power. The reformer is operated on either natural gas or propane. A backup source of power...
US20140193671 Portable Fuel Cell System Having a Fuel Cell System Controller  
A portable fuel cell system includes a fuel cell having a plurality of flow inputs and a power output, a temperature sensor configured to measure operating temperature of the fuel cell, a power...
US20140134508 FUEL CELL SYSTEM AND METHOD FOR CONTROLLING FUEL CELL SYSTEM  
To improve an output of a fuel cell and power generation efficiency by enhancing drainage of the fuel cell upon actuation below freezing temperature. In a fuel cell system that generates power by...
US20120183874 METHOD AND DEVICE FOR INCREASING THE SERVICE LIFE OF A PROTON EXCHANGE MEMBRANE FUEL CELL  
The method of using a fuel cell (1) of the PEFMC type, composed of a polymer membrane (2) and electrodes (3, 4) present on either side of the membrane (1), according to the invention comprises at...
US20080292914 Fuel cell system and hydrogen supply unit  
A fuel cell system includes: a fuel cell which generates electricity using hydrogen and oxygen; a hydrogen storage which stores hydrogen supplied to the fuel cell and which has a supply port...
US20090136801 REFORMING APPARATUS  
A reformer including a reforming section generating reformed gas from reforming fuel supplied thereto, a combustion section burning combustion fuel supplied thereto with combustion oxidizer gas...
US20060102398 Fuel cell equipped vehicle  
In a fuel cell equipped vehicle (10), hydrogen cylinders (18) storing hydrogen gas to be supplied to a fuel cell battery (30), a fuel cell (30), fuel cell accessories (31), a storage battery (40),...
US20060083966 Fuel cell unit and method for controlling liquid volume  
A fuel cell unit including: a fuel cell which generates water vapor; a mixing tank which mixes fuel and water so as to produce an aqueous fuel solution, the water in the mixing tank includes water...
US20150162625 MULTI-RESPONSIVE FUEL CELL SYSTEM  
An electrical power generation system includes a first fuel cell having a first responsiveness, a second fuel cell having a second responsiveness different from the first responsiveness, and a...
US20150228990 STRUCTURE AND METHOD FOR FUEL CELL SYSTEM WHERE MULTIPLE FUEL CELLS AND POWER ELECTRONICS FEED LOADS IN PARALLEL ALLOWING FOR INTEGRATED ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS)  
Systems, methods, and devices of the various embodiments enable electrochemical impedance spectroscopy (“EIS”) to be performed on electrochemical devices, such as fuel cell stack segments, by...
US20140255810 FUEL CELL POWER CONTROL BY OFFSET ESTIMATION  
A system and method for managing power flow in a fuel cell vehicle. The method provides a difference between a power limit signal and an actual power signal to a PI controller to generate a power...
US20070281187 Membrane Fuel Cell Countercurrent-Fed With Non-Humidified Air  
A membrane fuel cell delimited by bipolar plates comprising a cathodic compartment and an anodic compartment, said cathodic compartment comprising means for feeding air from the bottom to the top,...
US20090035630 FUEL CELL SYSTEM AND SHUTDOWN METHOD OF THE SAME  
At shutdown of a fuel cell system, a system-shutdown controller is configured to cause a current extraction device to extract current from a fuel cell in a state where a supply of a fuel gas...

Matches 1 - 50 out of 313 1 2 3 4 5 6 7 >