Patents by Inventor Debabrata Pal

Debabrata Pal 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).

  • Electrical machine with reduced windage
    Patent number: 9793782
    Abstract: A rotating machine has a shaft rotatable about an axis, a rotor rotatable with the shaft, and a rotor end winding at an axial end of the rotor. A stator is spaced from the rotor and forms a gap therebetween. The stator comprises a stator winding. A fluid system directs fluid through to the stator. A baffle to diverts fluid away from the gap and toward the stator.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: October 17, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • CIRCUIT BREAKER ARRANGEMENTS
    Publication number: 20170295672
    Abstract: A circuit breaker arrangement includes a housing, a contact seated in the housing, and a lead in electrical communication with the at least one contact and disposed outside the housing. The circuit breaker arrangement includes a heat sink in thermal communication with the lead to transfer heat between the contact and the lead.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 12, 2017
    Inventor: Debabrata Pal
  • POWER DISTRIBUTION SYSTEM
    Publication number: 20170279250
    Abstract: A power distribution system includes an electrical contactor arrangement. The electrical contactor arrangement includes a first contactor post, a first contactor lead, and a second contactor lead. The first contactor post extends from a first bus bar. The first contactor lead extends from the first contactor post. The first contactor lead is at least partially received within a contactor housing. The second contactor lead is spaced apart from the first contactor lead and extends from the first contactor post. The second contactor lead is at least partially received within the contactor housing.
    Type: Application
    Filed: March 25, 2016
    Publication date: September 28, 2017
    Inventor: Debabrata Pal
  • Methods and systems of air bubble flushing in liquid cooled generators
    Patent number: 9755484
    Abstract: A liquid cooled generator is provided having a rotor having a central core and a main stator winding wrapped around the central core. A first laminate at a first end of the central core is provided having a first orifice defining a first diameter and a second laminate at a second end of the central core is provided having a second orifice defining a second diameter that is the same as the first diameter. A flow line passes through the central core and is configured to extend from the first laminate to the second laminate, the flow line defining a third diameter that is larger than the first and second diameters. The first and second diameters are configured such that air flow is permitted to pass through the first and second laminates and to restrict the flow of a liquid through the first and second laminates.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: September 5, 2017
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Cooling for electrical machines
    Patent number: 9748822
    Abstract: A core for an electrical machine includes a core body, a winding, and a heat sink. The core body defines circumferentially offset winding slots. The winding is seated within the winding slots and has an endturn proximate the end of the core body. The heat sink is embedded in the winding endturn.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: August 29, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Electrical machines with liquid cooling
    Patent number: 9735656
    Abstract: A core for an electrical machine has a segmented body with first segments and second segments. The first segments extend from a radially inner portion of the segmented body to a radially outer portion of the segmented body. The second segments are axially stacked in alteration with the first layers along an axis of the segmented body. The first segments have thermal conductivity greater than thermal conductivity of the second segments for transferring heat from the radially outer portion of the segmented body to the radially inner portion of the segmented body.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: August 15, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Integrated contactor mounting and power distribution system and method
    Patent number: 9728347
    Abstract: A contactor mounting system is disclosed herein. The contactor is directly mounted to the printed wire board. Pins may be coupled to an exposed end portion of the first stationary lead and the second stationary lead of the contactor. Pins may be configured to interconnect the contactor to the printed wire board.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 8, 2017
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Debabrata Pal, John Horowy
  • Motor stator having channels used for cooling and method of providing the channels
    Patent number: 9729020
    Abstract: An example stator assembly includes a stator for establishing a core side of a channel. A plurality of stator windings are secured relative to portions of the stator core. The plurality of stator windings establish a winding side of the channel. At least a portion of the channel is configured to communicate a cooling fluid from a first axial end of the stator core to an opposing axial end of the stator core.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: August 8, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • THERMAL ENHANCEMENT OF CABIN AIR COMPRESSOR MOTOR COOLING
    Publication number: 20170175748
    Abstract: A cabin air compressor assembly includes a cabin air compressor, and a cabin air compressor motor operably connected to the cabin air compressor. The cabin air compressor motor includes a rotor and a stator having a plurality of end windings. A cabin air compressor housing includes at least one cooling airflow hole formed therein. A motor cooling flow is movable across a portion of the cabin air compressor motor to cool the stator and the end windings. A duct extends from the cabin air compressor housing to an adjacent end winding such that a cooling outlet flow provided via the at least one cooling air flow hole is arranged in fluid communication with the end winding.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 22, 2017
    Inventors: Debabrata Pal, Craig R. LeGros
  • Thermoelectric conversion of waste heat from generator cooling system
    Patent number: 9680080
    Abstract: An electrical generator includes a rotor, a stator core disposed axially around the rotor, a stator sleeve assembly disposed axially around the stator core, and a stator housing disposed axially around the stator sleeve assembly. The stator sleeve assembly includes a cylindrical stator sleeve and thermoelectric elements. The cylindrical stator sleeve has a radially inward facing surface and a radially outward facing surface. The thermoelectric elements are affixed to the radially outward facing surface of the cylindrical stator sleeve. The stator housing includes at least one coolant channel. The coolant channel is in thermal contact with the thermoelectric elements. The thermoelectric elements generate power as a function of the temperature difference between the cylindrical stator sleeve and the coolant channel.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: June 13, 2017
    Assignee: Hamilton Sunstrand Corporation
    Inventor: Debabrata Pal
  • Motor with cooled rotor
    Patent number: 9671172
    Abstract: A fan includes an air movement implement including a blade and a motor that drives the air movement implement. The motor includes a rotor that includes an internal diameter heat exchanger and a heat pipe having a first end and a second end, the first end in thermal contact with the internal diameter heat exchanger and the second end in thermal contact with the blade.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: June 6, 2017
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Debabrata Pal, Craig R. Legros
  • Electrical machine with reduced windage loss
    Patent number: 9660505
    Abstract: An electrical machine includes a rotor located at a central shaft and a stator located radially outboard of the rotor and secured at a back iron. A first baffle is coupled to the central shaft at one axial end of the rotor, the baffle extending radially outwardly from the shaft toward a baffle cavity at the back iron. A flow of coolant is urged toward the baffle cavity along the baffle via centrifugal force. A method of flowing coolant through an electrical machine includes injecting a flow of coolant substantially radially into an electrical machine cavity. The flow of coolant is urged radially outwardly along a rotating baffle located at one axial end of a rotor of the electrical machine via centrifugal force and into a baffle cavity disposed at the back iron at a radial end of the baffle.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: May 23, 2017
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • LAMINATED STATOR WITH COOLING LAMINATION LAYERS
    Publication number: 20170117776
    Abstract: A laminated stator for a motor includes a first plurality of stator laminations with a first electrical conductivity and a first thermal conductivity, and a second plurality of stator laminations with a second electrical conductivity and a second thermal conductivity, wherein the second electrical conductivity is lower than the first electrical conductivity, the second thermal conductivity is higher than the first thermal conductivity, and the second plurality of stator laminations are disposed throughout the first plurality of stator laminations.
    Type: Application
    Filed: October 26, 2015
    Publication date: April 27, 2017
    Inventors: Debabrata Pal, Joseph Kenneth Coldwate, Andreas C. Koenig
  • MULTILAYER CAPACITOR WITH INTEGRATED BUSBAR
    Publication number: 20170098504
    Abstract: Embodiments are directed to obtaining a specification of at least one operational requirement for at least one capacitor, generating a design of the at least one capacitor to satisfy the at least one operational requirement, the design of the at least one capacitor comprising a plurality of layers and a first integrated busbar coupled to at least a portion of the layers, and based on the design, manufacturing the at least one capacitor by utilizing an additive manufacturing technique.
    Type: Application
    Filed: December 14, 2016
    Publication date: April 6, 2017
    Inventors: John Horowy, Gary L. Galloway, Debabrata Pal, Eric Karlen, Mark W. Metzler
  • Contactor body with integral heat sink
    Patent number: 9613764
    Abstract: An electrical contactor assembly is provided including an electrical contactor positioned within a contactor housing, an electrical bus bar, and a post constructed from an electrically and thermally conductive material connected to the bus bar. At least one lead is coupled to the electrical contact and to the post. The at least one lead has a first portion oriented about a first plane and a second portion extending from the first portion and being oriented about a second plane. The second plane is arranged at an angle to the first plane such that one or more surface of the at least one lead are configured to transmit heat to the contactor housing.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 4, 2017
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Solid state contactor with improved interconnect structure
    Patent number: 9613892
    Abstract: A printed circuit board for selectively communicating power from a power source to a use has an input bus for receiving a power supply. A transistor is connected to the input bus and is positioned on one side of the input bus in a first direction. An output bus is connected to the transistor on an opposed side of the transistor relative to the input bus. The transistor is intermediate at the first input and output buses in the first dimension. A power supply system is also disclosed.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: April 4, 2017
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • HEAT EXCHANGER AND COOLING SYSTEM FOR GENERATOR ELECTRONICS COOLING
    Publication number: 20170081040
    Abstract: A system includes a heat exchanger, a first heat source disposed along a first circuit, and a second heat source disposed along a second circuit. The heat exchanger includes a first core defining a first flow path through the heat exchanger and along the first circuit and a second core defining a second flow path through the heat exchanger and along the second circuit that is parallel to the first flow path. The first and second cores define a third flow path extending through the heat exchanger that is configured to be in a heat exchange relationship with the first and second flow paths.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 23, 2017
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • THERMOELECTRIC COOLING SYSTEM
    Publication number: 20170082325
    Abstract: A method and system to transfer heat using a cooling medium includes a first cold plate, including a first fluid flow path in thermal communication with a first thermal region of the first cold plate, and a second fluid flow path in fluid communication with the first fluid flow path and in thermal communication with a second thermal region of the first cold plate, and a thermoelectric heat exchanger in thermal communication with the first thermal region of the first cold plate.
    Type: Application
    Filed: September 18, 2015
    Publication date: March 23, 2017
    Inventor: Debabrata Pal
  • CONTACTOR BODY WITH INTEGRAL HEAT SINK
    Publication number: 20170076877
    Abstract: An electrical contactor assembly is provided including an electrical contactor positioned within a contactor housing, an electrical bus bar, and a post constructed from an electrically and thermally conductive material connected to the bus bar. At least one lead is coupled to the electrical contact and to the post. The at least one lead has a first portion oriented about a first plane and a second portion extending from the first portion and being oriented about a second plane. The second plane is arranged at an angle to the first plane such that one or more surface of the at least one lead are configured to transmit heat to the contactor housing.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 16, 2017
    Inventor: Debabrata Pal
  • ROLLED INDUCTOR WITH THERMAL POTTANT
    Publication number: 20170032889
    Abstract: An apparatus includes a substrate layer formed from a pottant material that extends longitudinally in an unwound state. Cores are spaced longitudinally along the substrate layer and joined to the substrate at a first surface. The apparatus further includes pottant segments joined to the cores at a second surface opposite the first surface.
    Type: Application
    Filed: October 12, 2016
    Publication date: February 2, 2017
    Inventors: Debabrata Pal, John Horowy