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| Number | Title | Issue Date |
| 8185214 | Online configurable control system for fuel cells A fuel cell system control system includes a fuel cell system and a controller. The controller includes a display and a processor configured to execute a program for managing an operation of a fuel cell state machine having a plurality of states and capable of execu... | 05/22/2012 |
| 8182956 | Fuel cell stack with internal fuel manifold configuration A fuel cell stack includes a plurality of fuel cells, and a plurality of fuel delivery ports. Each of the plurality of fuel delivery ports is positioned on or in the fuel cell stack to provide fuel to a portion of the plurality fuel cells in each stack. ... | 05/22/2012 |
| 8142943 | Solid oxide fuel cell column temperature equalization by internal reforming and fuel cascading A fuel cell system includes a fuel cell stack including a plurality of fuel cells. The fuel cell stack includes a middle portion of fuel cells and at least one end portion of fuel cells. The fuel cells of the end portion is arranged in a cascade configuration with t... | 03/27/2012 |
| 8137855 | Hot box design with a multi-stream heat exchanger and single air control A fuel cell stack module includes a plurality of fuel cell stacks, an anode tail gas oxidizer (ATO) which is located in a heat transfer relationship with the plurality of fuel cell stacks, a base supporting the plurality of fuel cell stacks and the ATO, and at least... | 03/20/2012 |
| 8110319 | Fuel cell stack components An interconnect for a fuel cell stack includes a first set of gas flow channels in a first portion of the interconnect, and a second set of gas flow channels in second portion of the interconnect. The channels of the first set have a larger cross sectional area than... | 02/07/2012 |
| 8101307 | Fuel cell system with electrochemical anode exhaust recycling A method of operating a fuel cell system includes providing a fuel inlet stream into a fuel cell stack, operating the fuel cell stack to generate electricity and a hydrogen containing fuel exhaust stream, separating at least a portion of hydrogen contained in the fu... | 01/24/2012 |
| 8097378 | Stack seal interface adapter A fuel cell system comprises a first fuel cell stack having a first end plate, wherein the first end plate has a first opening, and a fuel cell component having a second opening. An adapter connects the first opening in the first end plate and the second opening in ... | 01/17/2012 |
| 8097374 | System and method for providing reformed fuel to cascaded fuel cell stacks A fuel cell system includes a first fuel cell stack, a second fuel cell stack arranged in a cascade configuration with the first fuel cell stack, and at least one hydrocarbon fuel reformer which is thermally integrated with at least a portion of the first stack. The... | 01/17/2012 |
| 8071248 | Structure and method for optimizing system efficiency when operating an SOFC system with alcohol fuels A fuel cell system includes a fuel cell stack, a fuel inlet conduit, a water inlet conduit, and a hydrometer, such as an alcoholometer. The hydrometer is adapted to provide a measurement of a water-to-fuel ratio of a fuel inlet stream within the fuel inlet conduit. ... | 12/06/2011 |
| 8071246 | Method of optimizing operating efficiency of fuel cells A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost ... | 12/06/2011 |
| 8071241 | Method for the co-production of hydrogen and electricity in a high temperature electrochemical system A method in which a high temperature electrochemical system, such as a solid oxide fuel cell system, generates hydrogen and optionally electricity in a fuel cell mode. At least a part of the generated hydrogen is separated and stored or provided to a hydrogen using ... | 12/06/2011 |
| 8067129 | Electrolyte supported cell designed for longer life and higher power A solid oxide fuel cell (SOFC) includes a cathode electrode, an anode electrode, and a solid oxide electrolyte located between the anode electrode and the cathode electrode. The cathode electrode is a porous ceramic layer infiltrated with a cathode catalyst material... | 11/29/2011 |
| 8057944 | Hybrid reformer for fuel flexibility A reformer for a fuel cell system includes a leading segment and a trailing segment. The leading segment includes less reactive catalyst and/or more stabilizing catalyst than the trailing segment. The reformer may be used for reformation of high and low hydrocarbon ... | 11/15/2011 |
| 8053136 | SORFC system with non-noble metal electrode compositions A solid oxide regenerative fuel cell includes a ceramic electrolyte, a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode, and a second electrode which is adapted to be negatively bias... | 11/08/2011 |
| 7974106 | Ripple cancellation Systems, methods and devices for power generation systems are described. In particular, embodiments of the invention relate to the architecture of power conditioning systems for use with fuel cells and methods used therein. More particularly, embodiments of the pres... | 07/05/2011 |
| 7968245 | High utilization stack A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode. The anode electrode includes a first portion made of a first anode material and a second portion made of a second anode material. The first anode material... | 06/28/2011 |
| 7951509 | Compliant cathode contact materials A solid oxide fuel cell stack includes a plurality of solid oxide fuel cells, wherein each solid oxide fuel cell comprises an electrolyte located between an anode electrode and a cathode electrode, a plurality of gas separators, and at least one compliant cathode co... | 05/31/2011 |
| 7951496 | Model based real-time optimization of fuel cell clusters A power generation system is provided. The power generation system includes a fuel cell controller, at least one fuel cell cluster operably connected to the fuel cell controller and a data server operably connected to the fuel cell cluster. The data server is config... | 05/31/2011 |
| 7931997 | Multi-material high temperature fuel cell seals A fuel cell stack includes a plurality of fuel cells, a plurality of interconnects and a multi-material seal comprising a first seal material and a second seal material, where the second seal material first forms an effective seal at a higher temperature than the fi... | 04/26/2011 |
| 7901814 | High temperature fuel cell system and method of operating same A high temperature fuel cell stack system, such as a solid oxide fuel cell system, with an improved balance of plant efficiency includes a thermally integrated reformer, combustor and the fuel cell stack. ... | 03/08/2011 |
| 7887971 | SORFC system with non-noble metal electrode compositions A solid oxide regenerative fuel cell includes a ceramic electrolyte, a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode, and a second electrode which is adapted to be negatively bias... | 02/15/2011 |
| 7883813 | Fuel cell system ventilation scheme A method of operating a fuel cell system includes purging heavier and lighter than air gases from a system cabinet containing at least one fuel cell stack during a single purge step, and starting-up the fuel cell system after the purging step. The system includes an... | 02/08/2011 |
| 7883803 | SOFC system producing reduced atmospheric carbon dioxide using a molten carbonated carbon dioxide pump A solid oxide fuel cell power generation system's entire output is made up of three streams: water, sequestered carbon dioxide provided into a storage tank, and carbon dioxide depleted air. Thus, the system generates electricity from a hydrocarbon fuel, while output... | 02/08/2011 |
| 7846600 | Adaptive purge control to prevent electrode redox cycles in fuel cell systems A method of operating a fuel cell system during a fuel outage or shortage includes detecting an open circuit voltage (OCV) of the fuel cell system, and providing a reducing purge gas flow to anode electrodes of fuel cells of the fuel cell system when the OCV approac... | 12/07/2010 |
| 7846599 | Method for high temperature fuel cell system start up and shutdown A fuel cell system includes a fuel cell stack and a PEM stack for providing power to the system in a start up or shut down operating mode and hydrogen to the fuel cell stack in a steady state operating mode. ... | 12/07/2010 |
| 7878280 | Low pressure hydrogen fueled vehicle and method of operating same A hydrogen fueled vehicle includes a vehicle body, a hydrocarbon fuel tank, and a low pressure hydrogen gas storage vessel. ... | 02/01/2011 |
| 7858256 | High temperature fuel cell system with integrated heat exchanger network A fuel cell system (1) is provided and includes a fuel cell stack (3) and a heat transfer device (5) adapted to transfer heat from a cathode exhaust stream of the fuel cell stack (3) to water to be provided to a fuel inlet stream. ... | 12/28/2010 |
| 7833668 | Fuel cell system with greater than 95% fuel utilization A method of operating a fuel cell system includes providing a fuel inlet stream into a fuel cell stack, operating the fuel cell stack to generate electricity and a hydrogen containing fuel exhaust stream, separating at least a portion of hydrogen contained in the fu... | 11/16/2010 |
| 7785744 | Fuel cell water purification system and method A water purification system includes a fuel cell stack, a steam generator, and a water purification unit. The fuel cell stack is adapted to provide heat to the steam generator and the steam generator is adapted to provide steam to the water purification unit. ... | 08/31/2010 |
| 7781912 | Uninterruptible power supply with opto-electric couplers for detecting the status of each source A system, method and device for power switching and power control, particularly for switching the source of power between two or more power sources are provided. Power control elements testing the availability and stability of alternate power sources and switch load... | 08/24/2010 |
| 7781112 | Combined energy storage and fuel generation with reversible fuel cells An electrochemical system includes a reversible fuel cell system which generates electrical energy and reactant product from fuel and oxidizer in a fuel cell mode and which generates the fuel and oxidant from the reactant product and the electrical energy in an elec... | 08/24/2010 |
| 7713649 | Fuel cell stack with internal fuel manifold configuration A fuel cell stack includes a plurality of fuel cells, and a plurality of fuel delivery ports. Each of the plurality of fuel delivery ports is positioned on or in the fuel cell stack to provide fuel to a portion of the plurality fuel cells in each stack. ... | 05/11/2010 |
| 7705490 | Integral stack columns Systems and methods for power conversion are illustrated. Power conversion architecture for fuel cell systems in particular are described that use dual bus architectures having stack segment pairs and a center-tapped neutral line, and/or an architecture employing in... | 04/27/2010 |
| 7704618 | High temperature fuel cell system and method of operating same A high temperature fuel cell stack system, such as a solid oxide fuel cell system, with an improved balance of plant efficiency includes a thermally integrated reformer, combustor and the fuel cell stack. ... | 04/27/2010 |
| 7704617 | Hybrid reformer for fuel flexibility A reformer for a fuel cell system includes a leading segment and a trailing segment. The leading segment includes less reactive catalyst and/or more stabilizing catalyst than the trailing segment. The reformer may be used for reformation of high and low hydrocarbon ... | 04/27/2010 |
| 7700210 | Increasing thermal dissipation of fuel cell stacks under partial electrical load A method of operating a high temperature fuel cell system containing a plurality of fuel cell stacks includes operating one or more of the plurality of fuel cell stacks at a first output power while operating another one or more of the plurality of the fuel cell sta... | 04/20/2010 |
| 7599760 | Online configurable control system for fuel cells A fuel cell system control system includes a fuel cell system and a controller. The controller includes a display and a processor configured to execute a program for managing an operation of a fuel cell state machine having a plurality of states and capable of execu... | 10/06/2009 |
| 7591880 | Fuel cell anode exhaust fuel recovery by adsorption A method of operating a fuel cell system includes providing a fuel inlet stream into a fuel cell stack, operating the fuel cell stack to generate electricity and a hydrogen containing fuel exhaust stream, separating at least a portion of hydrogen contained in the fu... | 09/22/2009 |
| 7575822 | Method of optimizing operating efficiency of fuel cells A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost ... | 08/18/2009 |
| 7572530 | SORFC power and oxygen generation method and system A solid oxide regenerative fuel cell system is used to supply power in a fuel cell mode and to generate metabolic oxygen and a hydrocarbon fuel reserve in an electrolysis mode. The system may also be used as a secondary power source or for energy peak shaving applic... | 08/11/2009 |
