Patents by Inventor Deliang Yang
Deliang Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240135256Abstract: A method of training a machine learning algorithm comprises providing a set of input data, performing transforms on the input data to generate augmented data, to provide transformed base paths into machine learning algorithm encoders, segmenting the augmented data, calculating main base path outputs by applying a weighting to the segmented augmented data, calculating pruning masks from the input and augmented data to apply to the base paths of the machine learning algorithm encoders, the pruning masks having a binary value for each segment in the segmented augmented data, calculating sparse conditional path outputs by performing a computation on the segments of the segmented augmented data, and calculating a final output as a sum of the main base path outputs and the sparse conditional path outputs. A computer-implemented system for learning sparse features of a dataset is also disclosed.Type: ApplicationFiled: October 24, 2023Publication date: April 25, 2024Applicant: Arizona Board of Regents on behalf of Arizona State UniversityInventors: Jae-sun Seo, Jian Meng, Li Yang, Deliang Fan
-
Publication number: 20240095528Abstract: A method for increasing the temperature-resiliency of a neural network, the method comprising loading a neural network model into a resistive nonvolatile in-memory-computing chip, training the deep neural network model using a progressive knowledge distillation algorithm as a function of a teacher model, the algorithm comprising injecting, using a clean model as the teacher model, low-temperature noise values into a student model and changing, now using the student model as the teacher model, the low-temperature noises to high-temperature noises, and training the deep neural network model using a batch normalization adaptation algorithm, wherein the batch normalization adaptation algorithm includes training a plurality of batch normalization parameters with respect to a plurality of thermal variations.Type: ApplicationFiled: September 8, 2023Publication date: March 21, 2024Applicant: Arizona Board of Regents on behalf of Arizona State UniversityInventors: Jae-sun Seo, Jian Meng, Li Yang, Deliang Fan
-
Patent number: 7875397Abstract: An inlet fuel distributor (10-10d) has a permeable baffle (39, 54, 54a, 60) between a fuel supply pipe (11, 83) and a fuel inlet manifold (12, 53, 53a, 63) causing fuel to be uniformly distributed along the length of the fuel inlet manifold. A surface (53, 68) may cause impinging fuel to turn and flow substantially omnidirectionally improving its uniformity. Recycle fuel may be provided (25, 71) into the flow downstream of the fuel inlet distributor. During startup, fuel or inert gas within the inlet fuel distributor and the fuel inlet manifold may be vented through an exhaust valve (57, 86) in response to a controller (58, 79) so as to present a uniform fuel front to the inlets of the fuel flow fields (58).Type: GrantFiled: December 15, 2003Date of Patent: January 25, 2011Assignee: UTC Power CorporationInventors: James R. Geschwindt, Robin J. Guthrie, George S. Hirko, Jr., Jeremy P. Meyers, Carl A. Reiser, Javier Resto, Yu Wang, John H. Whiton, Leslie L. Van Dine, Elizabeth A. Allen, Deliang Yang
-
Patent number: 7410712Abstract: A procedure for starting up a fuel cell system that is disconnected from its primary load and has both its cathode and anode flow fields filled with air includes initiating a flow of air through the cathode flow field and rapidly displacing the air in the anode flow field by delivering a flow of fresh hydrogen containing fuel into the anode flow field, and thereafter connecting the primary load across the cell. Sufficiently fast purging of the anode flow field with hydrogen prior to connecting the cells to the load eliminates the need for purging the anode flow field with an inert gas, such as nitrogen, upon start-up.Type: GrantFiled: March 5, 2005Date of Patent: August 12, 2008Assignee: UTC Power CorporationInventors: Carl A. Reiser, Deliang Yang, Richard D. Sawyer
-
Patent number: 7282285Abstract: A cell stack assembly (102) coolant system comprises a coolant exhaust conduit (110) in fluid communication with a coolant exhaust manifold (108) and a coolant pump (112). A coolant inlet conduit (120) enables transportation of the coolant to the coolant inlet manifold. The coolant system further includes a bypass conduit (132) in fluid communication with the coolant exhaust manifold and the coolant inlet manifold, while a bleed valve (130) is in fluid communication with the coolant exhaust conduit and a source of gas. Operation of the bleed valve enables venting of the coolant from the coolant channels, and through a shut down conduit (124). An increased pressure differential between the coolant and reactant gases forces water out of the pores in the electrode substrates (107,109). An ejector (250) prevents air form inhibiting the pump. Pulsed air is blown (238,239,243,245) through the coolant channels to remove more water.Type: GrantFiled: April 5, 2002Date of Patent: October 16, 2007Assignee: UTC Fuel Cells, LLCInventors: Harold T. Couch, Carl A. Reiser, Gennady Resnick, Deliang Yang, Emily A. Dykeman, David A. Condit
-
Patent number: 7250229Abstract: A procedure for starting up a fuel cell system that is disconnected from its primary load and that has air in both its cathode and anode flow fields includes a) connecting an auxiliary resistive load across the cell to reduce the cell voltage; b) initiating a recirculation of the anode flow field exhaust through a recycle loop and providing a limited flow of hydrogen fuel into that recirculating exhaust; c) catalytically reacting the added fuel with oxygen present in the recirculating gases until substantially no oxygen remains within the recycle loop; disconnecting the auxiliary load; and then d) providing normal operating flow rates of fuel and air into respective anode and cathode flow fields and connecting the primary load across the cell. The catalytic reaction may take place on the anode or within a catalytic burner disposed within the recycle loop.Type: GrantFiled: September 20, 2005Date of Patent: July 31, 2007Assignee: UTC Power CorporationInventors: Deliang Yang, Margaret M. Steinbugler, Richard D. Sawyer, Leslie L. Van Dine, Carl A. Reiser
-
Patent number: 7201992Abstract: A fuel cell includes a membrane electrode assembly (46) having a first reactant flow field (80) secured adjacent a first or second surface (48, 50) of the assembly (46) for directing flow of a first reactant adjacent the first or second surface of the assembly (46). The first reactant flow field (80) defines a plurality of two-pass circuits (82, 84, 86, 88), and each two-pass circuit (82) is in fluid communication with both a first reactant inlet (90) for directing the first reactant into the fuel cell (12), and with a first reactant outlet (92) for directing the first reactant out of the fuel cell (12). The plurality of two-pass circuits (82) facilitate water movement (112) toward the reactant inlet (90) to aid in passive maintenance of fuel cell (12) water balance.Type: GrantFiled: December 31, 2003Date of Patent: April 10, 2007Assignee: UTC Fuel Cells, LLCInventors: Deliang Yang, Jung S. Yi
-
Publication number: 20060127723Abstract: A fuel cell includes a plurality of power-producing electrode-electrolyte assemblies and heat-conducting elements. Cathode air supplied to the fuel cell is heated inside the fuel cell by fuel cell by-product heat via the heat-conducting elements.Type: ApplicationFiled: December 15, 2004Publication date: June 15, 2006Applicant: General Electric CompanyInventors: Timothy Rehg, Pavel Sokolov, Deliang Yang
-
Publication number: 20060093879Abstract: A procedure for starting up a fuel cell system that is disconnected from its primary load and that has air in both its cathode and anode flow fields includes a) connecting an auxiliary resistive load across the cell to reduce the cell voltage; b) initiating a recirculation of the anode flow field exhaust through a recycle loop and providing a limited flow of hydrogen fuel into that recirculating exhaust; c) catalytically reacting the added fuel with oxygen present in the recirculating gases until substantially no oxygen remains within the recycle loop; disconnecting the auxiliary load; and then d) providing normal operating flow rates of fuel and air into respective anode and cathode flow fields and connecting the primary load across the cell. The catalytic reaction may take place on the anode or within a catalytic burner disposed within the recycle loop.Type: ApplicationFiled: September 20, 2005Publication date: May 4, 2006Inventors: Deliang Yang, Margaret Steinbugler, Richard Sawyer, Leslie Van Dine, Carl Reiser
-
Publication number: 20050147855Abstract: A procedure for starting up a fuel cell system that is disconnected from its primary load and has both its cathode and anode flow fields filled with air includes initiating a flow of air through the cathode flow field and rapidly displacing the air in the anode flow field by delivering a flow of fresh hydrogen containing fuel into the anode flow field, and thereafter connecting the primary load across the cell. Sufficiently fast purging of the anode flow field with hydrogen prior to connecting the cells to the load eliminates the need for purging the anode flow field with an inert gas, such as nitrogen, upon start-up.Type: ApplicationFiled: March 5, 2005Publication date: July 7, 2005Inventors: Carl Reiser, Deliang Yang, Richard Sawyer
-
Patent number: 6913845Abstract: Each cell of a fuel cell stack is provided, between the anode 37 and cathodes 38, with either (a) a permanent shunt (20) which may be a discrete resistor (42-44), a diode (95), a strip of compliant carbon cloth (65), or a small amount of conductive carbon black (22) in the ionomer polymer mixture of which the proton exchange membrane (39) is formed, or (b) a removeable shunt such as a conductor (69) which may be rotated into and out of contact with the fuel cell anodes and cathodes, or a conductor (85) which may be urged into contact by means of a shape memory alloy actuator spring (90, 91), which may be heated.Type: GrantFiled: October 28, 2002Date of Patent: July 5, 2005Assignee: UTC Fuel Cells, LLCInventors: Timothy A. Bekkedahl, Lawrence J. Bregoli, Richard D. Breault, Emily A. Dykeman, Jeremy P. Meyers, Timothy W. Patterson, Tommy Skiba, Chris Vargas, Deliang Yang, Jung S. Yi
-
Publication number: 20050142420Abstract: A fuel cell includes a membrane electrode assembly (46) having a first reactant flow field (80) secured adjacent a first or second surface (48, 50) of the assembly (46) for directing flow of a first reactant adjacent the first or second surface of the assembly (46). The first reactant flow field (80) defines a plurality of two-pass circuits (82, 84, 86, 88), and each two-pass circuit (82) is in fluid communication with both a first reactant inlet (90) for directing the first reactant into the fuel cell (12), and with a first reactant outlet (92) for directing the first reactant out of the fuel cell (12). The plurality of two-pass circuits (82) facilitate water movement (112) toward the reactant inlet (90) to aid in passive maintenance of fuel cell (12) water balance.Type: ApplicationFiled: December 31, 2003Publication date: June 30, 2005Inventors: Deliang Yang, Jung Yi
-
Patent number: 6887599Abstract: A procedure for starting up a fuel cell system that is disconnected from its primary load and has both its cathode and anode flow fields filled with air includes initiating a flow of air through the cathode flow field and rapidly displacing the air in the anode flow field by delivering a flow of fresh hydrogen containing fuel into the anode flow field, and thereafter connecting the primary load across the cell. Sufficiently fast purging of the anode flow field with hydrogen prior to connecting the cells to the load eliminates the need for purging the anode flow field with an inert gas, such as nitrogen, upon start-up.Type: GrantFiled: November 26, 2002Date of Patent: May 3, 2005Assignee: UTC Fuel Cells, LLCInventors: Carl A. Reiser, Deliang Yang, Richard D. Sawyer
-
Patent number: 6858336Abstract: A procedure for shutting down an operating fuel cell system includes disconnecting the primary electricity using device and stopping the flow of hydrogen containing fuel to the anode, followed by quickly displacing the residual hydrogen with air by blowing air through the anode fuel flow field. A sufficiently fast purging of the anode flow field with air eliminates the need for purging with an inert gas such as nitrogen.Type: GrantFiled: November 26, 2002Date of Patent: February 22, 2005Assignee: UTC Fuel Cells, LLCInventors: Carl A. Reiser, Deliang Yang, Richard D. Sawyer
-
Patent number: 6833211Abstract: A reduced volume fuel cell stack (10) includes a plurality of thin fuel cells (46, 48, 50, 52, 54) and a plurality of thick fuel cells (56, 58). The thin fuel cells include water management channels (62A, 62B, 62C, 62D) and the thick fuel cells include cooling channels (76A, 76B, 76C, 76D). At least two thin fuel cells (48, 50) are secured adjacent each other and adjacent each thick fuel cell (56, 58) within the stack (10). The water management channels (62A, 62B, 62C, 62D) have a depth that is at least four times less than a depth of the cooling channels (76A, 76B, 76C, 76D) so that volume, weight and water content of the stack (10) are reduced.Type: GrantFiled: October 20, 2003Date of Patent: December 21, 2004Assignee: UTC Fuel Cells, LLCInventor: Deliang Yang
-
Patent number: 6794077Abstract: A proton exchange membrane (PEM) fuel cell includes fuel and oxidant flow field plates (26, 40) having fuel and oxidant channels (27, 28; 41, 44), and water channels, the ends (29, 48) of which that are adjacent to the corresponding reactant gas inlet manifold (34, 42) are dead ended, the other ends (31, 50) draining excess water into the corresponding reactant gas exhaust manifold (36, 45). Flow restrictors (39, 47) maintain reactant gas pressure above exit manifold pressure, and may comprise interdigitated channels (65, 66; 76, 78). Solid reactant gas flow field plates have small holes (85, 88) between reactant gas channels (27, 28; 41) and water drain channels (29, 30; 49, 50). In one embodiment, the fuel cells of a stack may be separated by either coolant plates (51) or solid plates (55) or both.Type: GrantFiled: December 28, 2001Date of Patent: September 21, 2004Assignee: UTC Fuel Cells, LLCInventors: Jung S. Yi, Deliang Yang, Richard D. Breault, Albert P. Grasso, Glenn W. Scheffler
-
Publication number: 20040142217Abstract: A cell stack assembly (102) coolant system comprises a coolant exhaust conduit (110) in fluid communication with a coolant exhaust manifold (108) and a coolant pump (112). A coolant inlet conduit (120) enables transportation of the coolant to the coolant inlet manifold. The coolant system further includes a bypass conduit (132) in fluid communication with the coolant exhaust manifold and the coolant inlet manifold, while a bleed valve (130) is in fluid communication with the coolant exhaust conduit and a source of gas. Operation of the bleed valve enables venting of the coolant from the coolant channels, and through a shut down conduit (124). An increased pressure differential between the coolant and reactant gases forces water out of the pores in the electrode substrates (107, 109). An ejector (250) prevents air form inhibiting the pump. Pulsed air is blown (238, 239, 243, 245) through the coolant channels to remove more water.Type: ApplicationFiled: October 3, 2003Publication date: July 22, 2004Inventors: Harold T. Couch, Gennady Resnick, Carl A. Reiser, Deliang Yang, Emily A. Dykeman
-
Publication number: 20040081866Abstract: Each cell of a fuel cell stack is provided, between the anode 37 and cathodes 38, with either (a) a permanent shunt (20) which may be a discrete resistor (42-44), a diode (95), a strip of compliant carbon cloth (65), or a small amount of conductive carbon black (22) in the ionomer polymer mixture of which the proton exchange membrane (39) is formed, or (b) a removeable shunt such as a conductor (69) which may be rotated into and out of contact with the fuel cell anodes and cathodes, or a conductor (85) which may be urged into contact by means of a shape memory alloy actuator spring (90, 91), which may be heated.Type: ApplicationFiled: October 28, 2002Publication date: April 29, 2004Inventors: Timothy A. Bekkedahl, Lawrence J. Bregoli, Richard D. Breault, Emily A. Dykeman, Jeremey P. Meyers, Timothy W. Patterson, Tommy Skiba, Chris Vargas, Deliang Yang, Jung S. Yi
-
Patent number: 6617068Abstract: The invention is a bi-zone water transport plate for a fuel cell wherein the plate includes a water permeability zone and a bubble barrier zone. The bubble barrier zone extends between all reactive perimeters of the plate, has a pore size of less than 20 microns, and has a thickness of less than 25 percent of a shortest distance between opposed contact surfaces of the plate. The water permeability zone has a pore size of at least 100 percent greater than the pore size of the bubble barrier zone, and has a thickness of greater than 75 percent of the shortest distance between the opposed contact surfaces of the plate. By having a separate bubble barrier zone, the plate affords enhanced water permeability while the bubble barrier maintains a gas seal.Type: GrantFiled: August 27, 2001Date of Patent: September 9, 2003Assignee: UTC Fuel Cells, LLCInventors: Brian F. Dufner, Michael L. Perry, John C. Trocciola, Deliang Yang, Jung S. Yi
-
Patent number: 6596426Abstract: A coolant system is proposed for addressing temperature concerns during start-up and shut-down of a cell stack assembly. The coolant system comprises a coolant exhaust conduit in fluid communication with a coolant exhaust manifold and a coolant pump, the coolant exhaust conduit enabling transportation of exhausted coolant away from a coolant exhaust manifold. A coolant return conduit is provided to be in fluid communication with a coolant inlet manifold and a coolant pump, the coolant return conduit enabling transportation of the coolant to the coolant inlet manifold. The coolant system further includes a bypass conduit in fluid communication with the coolant exhaust conduit and the coolant return conduit, while a bleed valve is in fluid communication with the coolant exhaust conduit and a gaseous stream. Operation of the bleed valve enables venting of the coolant from the coolant channels, and through said bypass conduit.Type: GrantFiled: April 5, 2001Date of Patent: July 22, 2003Assignee: UTC Fuel Cells, LLCInventors: Deliang Yang, Emily A. Ballinger, David A. Condit