106 patents
Page 4 of 6
Utility
Cerium and cerium oxide containing alloys, fuel cell system balance of plant components made therefrom and method of making thereof
11 May 21
A method of making a metal alloy includes providing a molten metal alloy containing chromium, cerium and at least one of iron and nickel and providing an oxidizing gas and a reducing gas into the molten metal alloy to at least partially preferentially oxidize the cerium to ceria.
Adil A. Ashary
Filed: 21 Nov 17
Utility
System and method for impedance testing DC power sources
27 Apr 21
A method includes selecting a test waveform to inject from a first DC converter to at least one first DC power source other than a fuel cell, determining a first resulting ripple that will be generated in response to injecting the test waveform onto the battery, determining at least one offset waveform to inject from at least one second DC converter to at least one second DC power source to generate one or more second ripples which cancel the first resulting ripple, injecting the test waveform from the first DC converter to the at least one first DC power source, injecting the at least one offset waveform from the at least one second DC converter to the at least one second DC power source, and determining a characteristic of the first DC power source based at least in part on the impedance response of the first DC power source.
Arne Ballantine, Ranganathan Gurunathan, Anilkumar Vishnuvarjula, Chockkalingam Karuppaiah
Filed: 27 Dec 18
Utility
Doped scandia stabilized zirconia electrolyte compositions
13 Apr 21
A solid oxide fuel cell (SOFC) electrolyte composition includes zirconia stabilized with scandia, and at least one of magnesia, zinc oxide, indium oxide, and gallium oxide, and optionally ceria in addition to the oxides above.
David N. Miller, Cristian Savaniu, John T S Irvine, Tad Armstrong
Filed: 8 May 19
Utility
Method of measurement and estimation of the coefficient of thermal expansion in components
30 Mar 21
Methods and systems for measuring and/or estimating a coefficient of thermal expansion (CTE) of a component of a fuel cell system.
Cheng-Yu Lin, Daniel Darga, Michael Groesch, Harald Herchen, Vijay Srivatsan
Filed: 21 Mar 18
Utility
SOFC with cathode exhaust partial bypass of the ATO and additional air cooling of a hotbox
23 Mar 21
One method of operating a fuel cell system including splitting a cathode exhaust from one or more fuel cell stacks in the system into a majority cathode exhaust stream comprising more than 50% of the cathode exhaust and a first cathode exhaust bypass stream, providing the majority cathode exhaust stream to an inlet of an anode tail gas oxidizer (ATO) containing a catalyst and providing the first cathode bypass stream downstream of the catalyst such that it bypasses the catalyst.
David Weingaertner, Michael Petrucha, David Edmonston, Yashas Keshav, Nilanjana Basu, Martin Perry
Filed: 28 Nov 18
Utility
SOFC system and method to decrease anode oxidation
16 Mar 21
A solid oxide fuel cell system and method, the system including a hotbox containing a fuel cell stack, a fuel supply configured to provide a fuel to the fuel cell stack, and a blower configured to provide air to the fuel cell stack.
Vijay Radhakrishnan, Manoj Pillai, Tad Armstrong, Padiadpu Shankara Anantha
Filed: 24 Oct 18
Utility
Fuel cell system including inductive heating element and method of using same
23 Feb 21
A fuel cell system and method of operating the same, the system including: a fuel cell stack and a reaction zone configured to receive a fuel/air mixture; an electromagnetic induction glow plug configured to heat the fuel/air mixture; and an alternating current (AC) generator configured to provide an AC voltage to the glow plug.
Aniket Pratap, Siddharth Patel, Sumit Raj, Shraddesh Malviya, Mosur K. Premkumar, Arne Ballantine, Martin Perry, Michael Petrucha
Filed: 12 Dec 18
Utility
Compliant contact material for fuel cells and method of making thereof
16 Feb 21
A method of making a fuel cell stack includes applying an electrically conductive, compliant contact print ink containing an electrically conductive material, a plasticizer, a solvent, and a binder to at least one of a surface of an electrode of a fuel cell or a surface of an interconnect, and placing the fuel cell and the interconnect in the fuel cell stack such that the compliant contact print ink is located between the electrode of the fuel cell and the interconnect.
Andres Leming
Filed: 4 Dec 18
Utility
Method for joining a ceramic matrix composite to dense ceramics for improved joint strength
9 Feb 21
A fuel cell stack assembly includes a fuel cell stack column, and side baffles disposed on opposing sides of the column.
David Edmonston, Michael Petrucha, Martin Perry, Avinash Verma
Filed: 10 Sep 18
Utility
Fuel cell interconnect with reduced voltage degradation and manufacturing method
21 Dec 20
A method of making an interconnect for a solid oxide fuel cell stack includes contacting an interconnect powder located in a die cavity with iron, the interconnect powder including a chromium and iron, compressing the interconnect powder to form an interconnect having ribs and fuel channels on a first side of the interconnect, such that the iron is disposed on tips of the ribs; and sintering the interconnect, such that the iron forms an contact layer on the tips of the ribs having a higher iron concentration than a remainder of the interconnect.
Sanchit Khurana, Tad Armstrong, Harald Herchen, Emily Wong, Cheng-Yu Lin
Filed: 22 Feb 18
Utility
Storage system controller
21 Dec 20
Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid.
Ranganathan Gurunathan, Arne Ballantine, Prasad Pmsvvsv, Rakesh Kumar Roy, Badrinarayanan Thiruvengadaswamy, Rajesh Gopinath, Saravanakumar Narayanasamy, Vishal Anand Gopalakrishnan, Anilkumar Vishnuvarjula, Tad Armstrong, Ian Russell
Filed: 9 Mar 17
Utility
Fuel cell system including high-temperature desulfurization subsystem and method of operating the same
23 Nov 20
A fuel cell system includes a hot box, a stack of fuel cells disposed in the hot box, and a desulfurization subsystem.
David Weingaertner, Emad El Batawi
Filed: 12 Sep 18
Utility
Fuel cell mechanical components
16 Nov 20
A modular fuel cell system includes a base, at least four power modules arranged in a row on the base, and a fuel processing module and power conditioning module arranged on at least one end of the row on the base.
Gilbert Richards, David Trevisan, Michael Lee, Jessica Mahler, Ross Parker, Alex Clarabut, Chad Pearson, Arne Ballantine, David Weingaertner, Jason Hixson, Fred Mitlitsky
Filed: 30 Jul 14
Utility
System and method for impedance testing DC power sources
19 Oct 20
A method includes selecting a test waveform to inject to a battery from a first DC converter, determining a first resulting ripple that will be generated in response to injecting the test waveform, determining at least one offset waveform to inject to at least one second DC power source from at least one second DC converter such that one or more second ripples will be provided that will cancel the first resulting ripple if the battery is charging, injecting the test waveform to the battery, injecting the at least one offset waveform to the at least one second DC power source, determining if the first resulting ripple has been cancelled, and determining if the battery is charging or discharging based on the step of determining if the first resulting ripple has been cancelled.
Arne Ballantine, Ranganathan Gurunathan, Anilkumar Vishnuvarjula, Chockkalingam Karuppaiah
Filed: 26 Dec 18
Utility
SOFC hot box components
5 Oct 20
Various hot box fuel cell system components are provided, such as heat exchangers, steam generator and other components.
Martin Perry, David Weingaertner, Nilanjana Basu, Michael Petrucha, William David Lyle, Navaneetha Krishnan, Matthias Gottmann
Filed: 1 Mar 18
Utility
Fuel cell system for information technology loads
5 Oct 20
A fuel cell system having a power module including at least one fuel cell segment, an input output module including at least one inverter, a rectifier, and an electric distribution module having at least a first electrical connector and a second electrical connector.
Peter Gross, Carl Cottuli, Arne Ballantine
Filed: 23 Feb 17
Utility
Multi-layered coating providing corrosion resistance to zirconia based electrolytes
21 Sep 20
A solid oxide fuel cell (SOFC) stack including a plurality of SOFCs and a plurality of interconnects.
Emad El Batawi, Eric Petersen, Mina Touma, Richard Stephenson
Filed: 3 Sep 14
Utility
Solid oxide fuel cell interconnect having a magnesium containing corrosion barrier layer and method of making thereof
31 Aug 20
An interconnect for a fuel cell stack includes an interconnect body having an air surface having air flow channels and ribs and a fuel surface having fuel flow channels and ribs, an electrically conductive contact layer located on the air surface of the interconnect, the electrically conductive contact layer containing at least one of Co and Mn, and a corrosion barrier layer containing zirconium silicate and magnesium aluminosilicate crystals located over the electrically conductive contact layer.
Emad El Batawi, Sanchit Khurana, Michael Gasda, Tad Armstrong
Filed: 13 Dec 17
Utility
Systems and methods for recycling fuel cell stack components
24 Aug 20
System and methods for refurbishing fuel cell stack components, the methods including singulating the stack using a splitting apparatus or a liquid nitrogen bath.
Elson Seiki, Cheng-Yu Lin, Bijan Moslehi, Jakob Hilton, Drew Paran, Ali Delkaninia, Young Bui
Filed: 20 Feb 17
Utility
Methods of advanced grid and microgrid support functionalities through hybrid fuel cell systems
24 Aug 20
A method of controlling an inverter having a three phase output and a plurality of single phase loads connected to respective one of the three phases of the three phase output includes determining if a first phase of the three phase output has a heavier load than a second phase of the three phase output, and providing a higher output power from the inverter to the first phase than to the second phase if it is determined that the first phase has a heavier load than the second phase.
Prasad Pmsvvsv, Ranganathan Gurunathan, Swaminathan Venkataraman, Arne Ballantine, Deepak Balakrishnan
Filed: 8 Aug 18