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).

  • INTEGRATED CONTRACTOR MOUNTING AND POWER DISTRIBUTION SYSTEM AND METHOD
    Publication number: 20160172126
    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: Application
    Filed: December 16, 2014
    Publication date: June 16, 2016
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Debabrata Pal, John Horowy
  • ELECTRICAL MACHINE WITH REDUCED WINDAGE
    Publication number: 20160172937
    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: Application
    Filed: December 12, 2014
    Publication date: June 16, 2016
    Inventor: Debabrata Pal
  • COOLING FOR ELECTRICAL MACHINES
    Publication number: 20160149472
    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: Application
    Filed: November 21, 2014
    Publication date: May 26, 2016
    Inventor: Debabrata Pal
  • SOLID STATE CONTACTOR WITH IMPROVED INTERCONNECT STRUCTURE
    Publication number: 20160126170
    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: Application
    Filed: October 31, 2014
    Publication date: May 5, 2016
    Inventor: Debabrata Pal
  • Method of Making a Heat Exchanger Using Additive Manufacturing and Heat Exchanger
    Publication number: 20160114439
    Abstract: A method of making a component of a heat exchanger includes the steps of providing a substrate, performing a first printing step to add one or more heat-transfer-enhancing structures onto a first side of the substrate, and performing a second printing to add one or more heat-transfer-enhancing structures onto a second side of the substrate. A heat exchanger is also disclosed.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 28, 2016
    Inventors: Debabrata Pal, Shawn Karl Reynolds, John Horowy, Charles Shepard, Eric Karlen
  • TWO-PHASE ELECTRIC MOTOR COOLER
    Publication number: 20160118863
    Abstract: An electric motor system includes a motor housing and a stator core disposed within the motor housing. The stator core includes a back iron heat exchanger for passing fluid therethrough. A fluid inlet is disposed at a first portion of the back iron heat exchanger that is at least partially in fluid communication with a liquid coolant source and is configured to accept a cooling mixture. A fluid outlet is disposed at a second portion of the back iron heat exchanger for outletting a gas coolant from the back iron heat exchanger such that liquid coolant is convertible to the gas coolant in the back iron heat exchanger by receiving energy from the stator core allowing the gas coolant exit through the outlet and thereby removing heat from the stator core.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 28, 2016
    Inventors: Debabrata Pal, Craig R. Legros
  • Stator cooling channel tolerant to localized blockage
    Patent number: 9306432
    Abstract: A motor is provided including a stator core having a plurality of stator fins projecting outwardly from the stator core. A plurality of stator cooling channels is defined between adjacent stator fins. A flow mixer ring is axially aligned with the stator core and separated therefrom by an axial gap. The flow mixer ring includes a plurality of ring fins projecting inwardly from an interior surface and a plurality of ring cooling channels defined between the plurality of ring fins. The plurality of ring fins extends from a first surface over at least a portion of an axial length of the flow mixer ring.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: April 5, 2016
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Joseph Kenneth Coldwate, John M. Beck, Debabrata Pal, Milan Lucic
  • RAM AIR FAN AND POWER ELECTRONICS COOLING SYSTEMS
    Publication number: 20160050791
    Abstract: A power electronics cooling system includes a ram air fan with one or more blades and a ram air fan motor connected via an output shaft. The ram air fan draws in air and passes it across a heat exchanger to cool one or more cooling liquids. One or more pumps pressurize and pump the cooling liquids to various electronic components, including one or more motor controllers. The pumps may be mechanically or electrically coupled to the output shaft of the ram air fan, such that the motor of the ram air fan provides energy to the pumps.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 18, 2016
    Inventor: DEBABRATA PAL
  • SYSTEM AND METHOD FOR METAL MATRIX MOUNTING SCHEME
    Publication number: 20160043023
    Abstract: An integrated circuit assembly element formed via an additive manufacturing technique, such as mixing a conductive material with a memory metal to form a portion of a substrate in desired locations, such as along the footprint of die, are discussed herein. In operation (e.g. in response to thermal cycling of the assembly) the memory metal contracts while the conductive material expands. The result is an element having reduced thermal expansion, which can be net zero coefficient of thermal expansion and/or be catered to the coefficient of thermal expansion of a desired material, such as the silicon die.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 11, 2016
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Eric Karlen, William Louis Wentland, John Horowy, Debabrata Pal
  • Rotating rectifier assembly bus bar
    Patent number: 9257886
    Abstract: A rectifier assembly includes a diode pack. A bus bar includes a first layer electrically connected to the diode pack. The first layer has a first yield strength and a first coefficient of thermal expansion. A second layer of copper is joined to the first layer and includes a second yield strength less than the first yield strength. In one example, the second layer has a second coefficient of thermal expansion within 5% of the first coefficient of thermal expansion.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: February 9, 2016
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • INTERCONNECTS FOR ELECTRICAL POWER DISTRIBUTION SYSTEMS
    Publication number: 20160028216
    Abstract: A contactor interconnect includes a lead post, a bus bar post and a plurality of electrically conductive heat rejection components. The lead post electrically connects to the bus bar post in series through the plurality of heat rejection components. The heat rejection components in turn connect electrically in parallel with one another between the lead post and the bus bar post for conducting current between the posts and passively dissipating heat conveyed from the lead post toward the bus bar post.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 28, 2016
    Inventor: Debabrata Pal
  • Circuit breaker module
    Patent number: 9245699
    Abstract: A circuit breaker module includes a breaker circuit connected to a first electrical lead and a second electrical lead, a housing surrounding the breaker circuit, wherein said first and second electrical leads extend through the housing, and wherein the housing is at least partially constructed of a thermally conductive polymer, and a heat dissipation feature contacting the housing, wherein the heat dissipation feature is operable to dissipate heat from the breaker circuit.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: January 26, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventors: John Horowy, Debabrata Pal
  • ROTOR COOLING
    Publication number: 20160020673
    Abstract: A rotor for an electrical machine includes a rotor core with a plurality of circumferentially spaced apart, axially extending wedges mounted to the rotor core. A rotor sleeve is mounted radially outboard of the rotor core. A respective flow channel is defined between each wedge and the rotor sleeve for passage of coolant therethrough.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 21, 2016
    Inventor: Debabrata Pal
  • ELECTRICAL MACHINES WITH LIQUID COOLING
    Publication number: 20160020675
    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: Application
    Filed: July 21, 2014
    Publication date: January 21, 2016
    Inventor: Debabrata Pal
  • LIQUID COOLED INDUCTORS
    Publication number: 20160005521
    Abstract: An inductor assembly includes an inductor core, a winding, and a coolant conduit. The inductor core defines a cavity and the winding is disposed about the inductor core such that a portion of the winding is disposed within the cavity. The coolant conduit extends from a first end of the cavity towards an opposed second end of the cavity and includes an inlet port and an outlet port in fluid communication with each other through the coolant conduit.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 7, 2016
    Inventor: Debabrata Pal
  • FUSE ASSEMBLY
    Publication number: 20150357144
    Abstract: A fuse assembly of a motor controller is provided. The fuse assembly includes a base, a base plate to which the base is attached, a lead frame that is attached to the base, at least one lead that is attached to the lead frame, and a fuse element attached to the base and covered with a fusible material. Heat is generated in the fuse element by a high flow of current carried by the assembly. The heat is operatively transferred through the assembly by direct conduction to the base and then base plate. The assembly sufficiently transfers heat to reduce rise in temperature of and properly cool the assembly. An operating temperature of the assembly is reduced to minimize or prevent damage thereto. The assembly has increased thermal-fatigue life and minimizes thermal-fatigue damage to the assembly during temperature cycling in an aircraft. Thermal stress of the assembly is minimized.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 10, 2015
    Inventor: Debabrata Pal
  • THREE-DIMENSIONAL POWER DISTRIBUTION INTERCONNECT STRUCTURE
    Publication number: 20150357800
    Abstract: An electrical power distribution system for a mobile platform, and a method for making such, includes a forming a substrate having a first panel connected to a second panel. The first panel resides in a first plane that differs from a second plan in which the second panel resides. One or more bus bars are arranged on the first panel, with one or more power electronic devices arranged on the first panel and connected to the one or more bus bars. One or more connectors are arranged on the second panel and electrically connected to the one or more bus bars. Finally, one or more thermal relief devices are arranged in contact with the substrate.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 10, 2015
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Debabrata Pal, Michael Krenz, John Horowy, Eric Karlen
  • FLEXIBLE LAMINATED THERMOCOUPLE
    Publication number: 20150346035
    Abstract: A flexible laminated thermocouple is provided and includes layers of insulation material. At least one of the layers has a longitudinal axis and includes thermocouple conductors formed of differing electrically conductive materials. Each of the thermocouple conductors includes a main section extending along the longitudinal axis and a flange extending transversely to the longitudinal axis. The main sections are insulated from one another and the thermocouple conductors are insulated from thermocouple conductors of another layer.
    Type: Application
    Filed: May 28, 2014
    Publication date: December 3, 2015
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Eric Karlen, John Horowy, William Louis Wentland, Debabrata Pal
  • Air cooled motor controllers
    Patent number: 9175694
    Abstract: An air cooled motor controller includes a substrate and at least one inductor assembly arranged on the substrate. The at least one inductor assembly includes a outer cylindrical housing, a wound inductor core arranged within the outer cylindrical housing, and a inner cylindrical housing arranged within the wound inductor core, wherein the inner cylindrical housing defines an inner cylindrical cavity configured to transmit air, and wherein the outer cylindrical housing and the inner cylindrical housing define at least one cylindrical gap in fluid communication with the inner cylindrical cavity and configured to transmit air. The motor controller also includes at least one air source in fluid communication with the at least one cylindrical gap.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: November 3, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Cooling arrangement for a motor assembly and method of cooling a motor assembly
    Patent number: 9178400
    Abstract: A cooling arrangement for a motor assembly includes a motor operably connected to a load. Also included is a motor controller disposed adjacent to, and fluidly coupled to, the motor, the motor controller disposed within a housing enclosing a cooling fluid for immersion of a plurality of motor controller components. Further included is a duct arrangement configured to route a cooling flow to a location proximate the housing of the motor controller for cooling therealong.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: November 3, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Debabrata Pal, Mustansir Hussainy Kheraluwala, Eric Alan Carter, Robert Scott Downing, Charles Patrick Shepard