Patents by Inventor Jagadeesh Kumar TANGUDU
Jagadeesh Kumar TANGUDU 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).
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Publication number: 20240113585Abstract: A stator includes a stator hub, a plurality of stator teeth extending from stator hub that define a stator slot and at least one winding disposed in the stator slot, the winding including a cooling passage formed therein through. The cooling passage is connected to an inlet plenum and an outlet plenum. The stator can also include coil separators tint include cooling passages.Type: ApplicationFiled: February 9, 2021Publication date: April 4, 2024Inventors: Aritra Sur, Kimberly Rae Saviers, Abbas A. Alahyari, Andrzej Ernest Kuczek, Jagadeesh Kumar Tangudu
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Publication number: 20240113596Abstract: A header for an electric machine that include a stator core and one or more windings that include coolant passages formed therein. The header includes an inlet to receive a coolant, an outlet though which the coolant exits the header, an inlet plenum fluidly connected to the inlet, and an outlet plenum fluidly separated from the inlet plenum and fluidly connected to the outlet. The inlet and outlet plenums each have a varying cross section that varies from a top of the header as compared to a bottom of the header.Type: ApplicationFiled: February 9, 2021Publication date: April 4, 2024Inventors: Kimberly Rae Saviers, Andrzej Ernest Kuczek, Abbas A. Alahyari, Aritra Sur, Jagadeesh Kumar Tangudu
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Publication number: 20240097531Abstract: Disclosed is a heat exchanger having: an inlet manifold configured to receive a cooling fluid; a reservoir; first and second condenser arms connected between and that respectively fluidly couple the inlet manifold to the reservoir, so that fluid received at the inlet manifold travels from the inlet manifold into the reservoir; and an outlet pump having a pump inlet port coupled to the reservoir and having a pump outlet port, wherein the inlet manifold, the reservoir, the first and second condensers, in combination, form a continuous shape.Type: ApplicationFiled: February 9, 2021Publication date: March 21, 2024Inventors: Abbas A. Alahyari, Jagadeesh Kumar Tangudu
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Publication number: 20240048030Abstract: Electric motors and stators thereof are described. The stators of the electric motors include a first header, a second header fluidly connected to the first header, a plurality of windings fluidly connected to the first header and the second header to receive a cooling fluid passing from the first header to the second header along one or more flow channels, and one or more phase-change material elements arranged to thermally interact with at least one of the first header, the second header, the one or more flow channels, and the plurality of windings.Type: ApplicationFiled: February 9, 2021Publication date: February 8, 2024Inventors: Abbas A. Alahyari, Kimberly Rae Saviers, Jagadeesh Kumar Tangudu, Aritra Sur
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Patent number: 11884409Abstract: Aircraft electric motors include a motor unit having a rotor and a stator. The stator includes a plurality of windings and cooling channels arranged to provide cooling thereto. A drive unit is configured to drive operation of the motor unit. A cooling system includes a working fluid arranged within a cooling fluid flow path, wherein the cooling fluid flow path includes a liquid cooling path configured to direct flow of the working fluid through, at least, the cooling channels of the motor unit and a vapor cooling path configured to direct flow of the working fluid through the drive unit and a separator arranged upstream of each of the liquid cooling path and the vapor cooling path and configured to direct a liquid portion of the working fluid into the liquid cooling path and configured to direct a vapor portion of the working fluid into the vapor cooling path.Type: GrantFiled: November 1, 2021Date of Patent: January 30, 2024Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Abbas A Alahyari, Kimberly Rae Saviers, Joseph Turney, Jagadeesh Kumar Tangudu
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Patent number: 11876405Abstract: A stator of an electric motor includes a stator core including a rim and a plurality of stator teeth extending from the rim. The plurality of stator teeth define a plurality of tooth gaps between circumferentially adjacent stator teeth. A plurality of stator windings are wrapped along the plurality of stator teeth. The plurality of stator windings include a plurality of core segments extending along the plurality of tooth gaps, and a plurality of end turn segments connecting adjacent core segments. A plurality of non-electrically conductive cooling channels are located in the stator core. The plurality of cooling channels are configured to direct a cooling fluid flow therethrough to cool the plurality of stator windings.Type: GrantFiled: January 14, 2020Date of Patent: January 16, 2024Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Kimberly Rae Saviers, Ram Ranjan, Jagadeesh Kumar Tangudu
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Patent number: 11851196Abstract: Aircraft electric motors are described. The electric motors include an annular rotor sleeve having an inner wall, a connecting wall, and an outer wall, wherein the inner wall, the connecting wall, and the outer wall define a U-shaped channel configured to receive a U-shaped magnet structure and a sleeve inner cavity defined radially inward from the inner wall, a hub connector extending radially inward from the inner wall into the sleeve inner cavity, a hub arranged in the sleeve inner cavity and fixedly connected to the hub connector, wherein the hub is configured to rotate with rotation of the rotor sleeve, and a U-shaped magnet structure arranged within the U-shaped channel of the rotor sleeve. At least one of the rotor sleeve, the hub connector, and the hub are formed from a composite material.Type: GrantFiled: April 6, 2021Date of Patent: December 26, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Jagadeesh Kumar Tangudu, Andrzej Ernest Kuczek, Wenping Zhao
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Patent number: 11817752Abstract: Provided are embodiments for a method and a hybrid axial/radial motor. Embodiments can include a central rotor that includes an axial segment, a first radial segment, and a second radial segment, wherein the first radial segment extends axially from a first side of the axial segment and the second radial segment extends axially from a second side of the axial segment, wherein the first side is opposite the second side. Embodiments can also include a stator adapted to receive the first radial segment or the second radial segment of the central rotor.Type: GrantFiled: July 2, 2021Date of Patent: November 14, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Tod Policandriotes, Parag M. Kshirsagar, Suman Dwari, Beata I. Wawrzyniak, Jagadeesh Kumar Tangudu, Sreenivasa R. Voleti
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Patent number: 11817761Abstract: Aircraft electric motors are described. The aircraft electric motors include a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system having at least one directional feature forming a portion of at least one cooling channel, the at least one directional feature configured to prevent backflow of a cooling fluid that passes through the at least one cooling channel.Type: GrantFiled: November 5, 2021Date of Patent: November 14, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Abbas A. Alahyari, Joseph Turney, Jagadeesh Kumar Tangudu, Kimberly Rae Saviers
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Patent number: 11811268Abstract: Aircraft electric motors are described. The aircraft electric motors include a cooling system comprising an annular heat exchanger, a motor housing arranged radially inward from the heat exchanger, the motor housing defining a rotor-stator cavity and a gear assembly cavity, a rotor sleeve arranged within the rotor-stator cavity, a gear assembly arranged within the gear assembly cavity, a first shaft operably coupled to the rotor sleeve and configured to be rotationally driven by the rotor sleeve to drive rotation of a portion of the gear assembly, and a second shaft operably coupled to the gear assembly and configured to be rotationally driven by the gear assembly.Type: GrantFiled: April 6, 2021Date of Patent: November 7, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Jagadeesh Kumar Tangudu, Abbas A. Alahyari, Zaffir A. Chaudhry, Aritra Sur, Kimberly Rae Saviers, Wenping Zhao, Huan Zhang, Andrzej Ernest Kuczek
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Patent number: 11804754Abstract: An electric motor system includes an electric motor, and a thermal management system. The thermal management system includes a two-phase refrigerant circuit circulating a flow of refrigerant through the electric motor, and a refrigerant-air heat exchanger fluidly connected to the electric motor via the two-phase refrigerant circuit, such that the flow of refrigerant is boiled via heat generated by the electric motor, and returned to a subcooled liquid state to cool the electric motor. A method of dissipating thermal energy from an electric motor includes urging a flow of refrigerant through an electric motor, thereby boiling the flow of refrigerant, directing the flow of refrigerant from the electric motor to a refrigerant-air heat exchanger via a two-phase refrigerant circuit, and cooling the refrigerant to a sub-cooled liquid state at the refrigerant-air heat exchanger via thermal energy exchange with a flow of air through the refrigerant-air heat exchanger.Type: GrantFiled: December 18, 2020Date of Patent: October 31, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Kimberly Rae Saviers, Abbas A. Alahyari, Aritra Sur, Jagadeesh Kumar Tangudu
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Patent number: 11777374Abstract: A motor drive architecture is provided. The motor drive architecture includes a three-dimensional (3D) stack of cold plates on which power electronic components for an electric machine are mountable and supporting structures. Each cold plate has an annular shape with internal fluid pathways. The supporting structures hold the cold plates in the 3D stack. At least one supporting structure defines an internal cavity bifurcated into an internal inlet fluid pathway configured to direct fluid into the internal fluid pathways of each cold plate and an internal outlet fluid pathway receptive of the fluid from the internal fluid pathways of each cold plate.Type: GrantFiled: April 6, 2021Date of Patent: October 3, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Jagadeesh Kumar Tangudu, Aritra Sur
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Patent number: 11757335Abstract: A stator includes a stator hub and a plurality of stator teeth extending from the stator hub that define a stator slot having a stator slot base. At least one winding is disposed in the stator slot and the stator also includes a back iron. The winding surrounds the back iron and is held apart from the stator slot base so that a fluid channel is defined between an inner winding portion of the at least one winding so fluid can be passed between the stator slot base and the inner winding portion to cool the inner winding portion.Type: GrantFiled: April 6, 2021Date of Patent: September 12, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Jagadeesh Kumar Tangudu, Aritra Sur
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Patent number: 11728715Abstract: An electric motor is provided and includes inner and outer rotors, a stator supportive of back iron radially interposed between the inner and outer rotors and a winding structure. The winding structure includes first phase coils radially interposed between the inner rotor and a first side of the back iron, the first phase coils extending axially along the first side of the back iron, second phase coils radially interposed between a second side of the back iron and the outer rotor, the second phase coils extending axially along the second side of the back iron and end windings respectively extending radially between corresponding ones of the first and second phase coils.Type: GrantFiled: April 6, 2021Date of Patent: August 15, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventor: Jagadeesh Kumar Tangudu
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Patent number: 11705782Abstract: A stator and a motor including a stator. The stator includes a stator hub, a plurality of stator teeth extending from the stator hub that define a stator slot having a stator slot base, at least one winding disposed in the stator slot, and one or more oscillating heat pipes disposed at least partially in the at least one winding. The at least one winding is held apart from the stator slot base so that a cooling channel is defined between an inner winding portion of the at least one winding and a portion of the one or more oscillating heat pipes is disposed in the channel so cooling fluid can be passed between the stator slot base and the inner winding portion to cool the inner winding portion via at least operation of the one or more oscillating heat pipes.Type: GrantFiled: September 23, 2021Date of Patent: July 18, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Abbas A. Alahyari, Kimberly Rae Saviers, Jagadeesh Kumar Tangudu, Joseph Turney
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Publication number: 20230142019Abstract: Aircraft electric motors are described. The aircraft electric motors includes a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system. The cooling system includes at least one cooling channel integrally formed within at least one winding, wherein the at least one cooling channel comprises an inlet to receive a two-phase cooling fluid and an outlet configured to discharge the two-phase cooling fluid, wherein a cross-sectional area of the at least one cooling channel at the inlet is less than a cross-sectional area of the at least one cooling channel at the outlet.Type: ApplicationFiled: November 9, 2021Publication date: May 11, 2023Inventors: Kimberly Rae Saviers, Abbas A. Alahyari, Jagadeesh Kumar Tangudu, Joseph Turney
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Publication number: 20230143600Abstract: Aircraft electric motors are described. The aircraft electric motors include a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system. The cooling system includes an oscillating heat pipe containing a first working fluid, wherein the oscillating heat pipe is arranged to pick up heat from at least one winding, the oscillating heat pipe having an evaporator section arranged in thermal contact with the at least one winding and a condenser section arranged away from the evaporator section and a heat pickup portion arranged to receive a second working fluid to remove heat from the condenser section of the oscillating heat pipe.Type: ApplicationFiled: November 5, 2021Publication date: May 11, 2023Inventors: Kimberly Rae Saviers, Abbas A. Alahyari, Jagadeesh Kumar Tangudu, Joseph Turney
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Publication number: 20230141526Abstract: Aircraft electric motors are described. The aircraft electric motors include a motor unit having a rotor and a stator, wherein the stator includes a plurality of windings and cooling channels arranged to provide cooling to the plurality of windings, a drive unit configured to drive operation of the motor unit, and a cooling system having at least one directional feature forming a portion of at least one cooling channel, the at least one directional feature configured to prevent backflow of a cooling fluid that passes through the at least one cooling channel.Type: ApplicationFiled: November 5, 2021Publication date: May 11, 2023Inventors: Abbas A. Alahyari, Joseph Turney, Jagadeesh Kumar Tangudu, Kimberly Rae Saviers
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Patent number: 11646633Abstract: Aircraft electric motors are described. The electric motors include a substantially annular shaped motor housing having an outer wall and an inner wall, wherein a rotor-stator cavity is defined between the outer wall and the inner wall and a gear assembly cavity is defined radially inward from the inner wall and a gear assembly arranged within the gear assembly cavity. The gear assembly includes a sun gear operably connected to a first shaft, at least one planetary gear arranged radially outward from the sun gear and rotationally engaged with the sun gear, and a ring gear arranged radially outward from the at least one planetary gear and rotationally engaged with the at least one planetary gear, wherein the ring gear is operably connected to a second shaft.Type: GrantFiled: April 6, 2021Date of Patent: May 9, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Jagadeesh Kumar Tangudu, Huan Zhang, Zaffir A. Chaudhry, Andrzej Ernest Kuczek
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Publication number: 20230138133Abstract: Aircraft electric motors include a motor unit having a rotor and a stator. The stator includes a plurality of windings and cooling channels arranged to provide cooling thereto. A drive unit is configured to drive operation of the motor unit. A cooling system includes a working fluid arranged within a cooling fluid flow path, wherein the cooling fluid flow path includes a liquid cooling path configured to direct flow of the working fluid through, at least, the cooling channels of the motor unit and a vapor cooling path configured to direct flow of the working fluid through the drive unit and a separator arranged upstream of each of the liquid cooling path and the vapor cooling path and configured to direct a liquid portion of the working fluid into the liquid cooling path and configured to direct a vapor portion of the working fluid into the vapor cooling path.Type: ApplicationFiled: November 1, 2021Publication date: May 4, 2023Inventors: Abbas A. Alahyari, Kimberly Rae Saviers, Joseph Turney, Jagadeesh Kumar Tangudu