Patents by Inventor Frank Z. Feng
Frank Z. Feng 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: 20230318497Abstract: A generator system can include a dual stator generator comprising a first stator and a second stator, a first rectifier operatively connected to the first stator to receive AC from the first stator, a second rectifier operatively connected to the second stator to receive AC from the second stator, and a first DC output line and a second DC output line. The first rectifier and the second rectifier can be connected in parallel to the first DC output line and a second DC output line without an inter phase transformer (IPT) to output DC to the first DC output line and the second DC output line.Type: ApplicationFiled: February 11, 2022Publication date: October 5, 2023Applicant: Hamilton Sundstrand CorporationInventors: Frank Z. Feng, Timothy R. Pieper
-
Publication number: 20230011032Abstract: Provided are embodiments for a power generation system. The system includes a generator comprising a first set of stator windings and a second set of stator windings; a first rectifier coupled to an output of the first set of stator windings; a second rectifier coupled to an output of the second set of stator windings; and an electrical connection coupling an output of the first rectifier and an output of the second rectifier, wherein the electrical connection is used to provide a DC supply to a load. Also provided are embodiments for a method for operating the power generation system.Type: ApplicationFiled: July 9, 2021Publication date: January 12, 2023Inventors: Frank Z. Feng, Andreas C. Koenig, William S. Heglund
-
Publication number: 20230005822Abstract: Disclosed is a semiconductor article including: a metal bus bar and a metal heat sink wherein at least a portion of a first side of the metal bus bar is bonded to at least a portion of the metal heat sink by a polyimide layer without adhesive; and a semiconductor power device disposed on a second side of the metal bus bar.Type: ApplicationFiled: July 1, 2021Publication date: January 5, 2023Inventor: Frank Z. Feng
-
Patent number: 11336083Abstract: A power converter monitor having built-in fault tolerance and containment including a plurality of voltage inputs operatively connected to a pulse timing device, a respective comparator electrically connected to each of the voltage inputs, an and-gate electrically connected in series to each of the comparators and wherein the pulse timing device is operatively connected by the and-gate and a-not gate to each of the voltage inputs configured to reset a detected voltage output fault and provide a converter inhibit pulse if the voltage output fault is detected.Type: GrantFiled: November 5, 2019Date of Patent: May 17, 2022Assignee: Hamilton Sundstrand CorporationInventors: Michael J. Hanson, Frank Z. Feng
-
Patent number: 11239763Abstract: The transformer includes a core. The transformer includes a first rectifier voltage connection winding wound on the core operable to conduct with the first rectifier voltage connection. The transformer includes a second rectifier voltage connection winding wound on the core operable to conduct with the second rectifier voltage connection, the second rectifier voltage connection winding operable to form a first magnetic flux with the first rectifier voltage connection winding. The transfer includes a first rectifier return connection winding wound on the core operable to conduct with the first rectifier return connection. The transformer includes a second rectifier return connection winding wound on the core operable to conduct with the second rectifier return connection, the second rectifier return connection winding operable to form a second magnetic flux with the first rectifier return connection winding and operable to form a net flux with the first rectifier voltage connection winding.Type: GrantFiled: January 6, 2020Date of Patent: February 1, 2022Assignee: HAMILTON SUNDSTRAND CORPORATIONInventor: Frank Z. Feng
-
Patent number: 11228254Abstract: A dual-output AC-DC power converter with balanced DC output voltages is described. The DC power source has balanced DC voltage outputs relative to DC midpoint irrespective of DC load imbalance. The input to the power source is three-phase four-wire AC voltage source. Current draws from the AC three-phase voltage source have 12-pulse near sinusoidal waveform. Ripple voltage from DC positive rail to DC negative rail is 12-pulse.Type: GrantFiled: May 27, 2020Date of Patent: January 18, 2022Assignee: HAMILTON SUNDSTRAND CORPORATIONInventor: Frank Z. Feng
-
Patent number: 11217386Abstract: A transformer includes a core with a surface, a primary winding with two or more primary winding turns wrapped about the core, and a secondary winding with one and only one secondary winding turn extending about the core. The one and only one secondary winding turn is interleaved among the two or more primary winding turns on the surface of the core to limit magnetic flux leakage along the primary winding and the secondary winding. Power converters and power conversion methods are also described.Type: GrantFiled: November 1, 2019Date of Patent: January 4, 2022Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Frank Z. Feng, John Duward Sagona
-
Patent number: 11108333Abstract: A system includes a DC-DC power converter including a first pair of input/output lines for connecting to a first device for supplying power to or drawing power from the first device, and a second pair of input output lines for supplying power to or drawing from a second device. The system includes at least one ultra-capacitor connected across the first pair of input/output lines.Type: GrantFiled: November 6, 2019Date of Patent: August 31, 2021Assignee: Hamilton Sundstrand CorporationInventors: Frank Z. Feng, Christopher J. Courtney
-
Publication number: 20210211064Abstract: The transformer includes a core. The transformer includes a first rectifier voltage connection winding wound on the core operable to conduct with the first rectifier voltage connection. The transformer includes a second rectifier voltage connection winding wound on the core operable to conduct with the second rectifier voltage connection, the second rectifier voltage connection winding operable to form a first magnetic flux with the first rectifier voltage connection winding. The transfer includes a first rectifier return connection winding wound on the core operable to conduct with the first rectifier return connection. The transformer includes a second rectifier return connection winding wound on the core operable to conduct with the second rectifier return connection, the second rectifier return connection winding operable to form a second magnetic flux with the first rectifier return connection winding and operable to form a net flux with the first rectifier voltage connection winding.Type: ApplicationFiled: January 6, 2020Publication date: July 8, 2021Inventor: Frank Z. Feng
-
Publication number: 20210134523Abstract: A transformer includes a core with a surface, a primary winding with two or more primary winding turns wrapped about the core, and a secondary winding with one and only one secondary winding turn extending about the core. The one and only one secondary winding turn is interleaved among the two or more primary winding turns on the surface of the core to limit magnetic flux leakage along the primary winding and the secondary winding. Power converters and power conversion methods are also described.Type: ApplicationFiled: November 1, 2019Publication date: May 6, 2021Inventors: Frank Z. Feng, John Duward Sagona
-
Publication number: 20210135448Abstract: A power converter monitor having built-in fault tolerance and containment including a plurality of voltage inputs operatively connected to a pulse timing device, a respective comparator electrically connected to each of the voltage inputs, an and-gate electrically connected in series to each of the comparators and wherein the pulse timing device is operatively connected by the and-gate and a-not gate to each of the voltage inputs configured to reset a detected voltage output fault and provide a converter inhibit pulse if the voltage output fault is detected.Type: ApplicationFiled: November 5, 2019Publication date: May 6, 2021Applicant: Hamilton Sundstrand CorporationInventors: Michael J. Hanson, Frank Z. Feng
-
Publication number: 20210135571Abstract: A system includes a DC-DC power converter including a first pair of input/output lines for connecting to a first device for supplying power to or drawing power from the first device, and a second pair of input output lines for supplying power to or drawing from a second device. The system includes at least one ultra-capacitor connected across the first pair of input/output lines.Type: ApplicationFiled: November 6, 2019Publication date: May 6, 2021Applicant: Hamilton Sundstrand CorporationInventors: Frank Z. Feng, Christopher J. Courtney
-
Patent number: 10868475Abstract: An energy storage module (ESM) assembly includes an ESM having an energy source and a multi-level dual active bridge (ML-DAB). The ML-DAB is connected to the energy source to source current therefrom, or send current thereto, or both. A system architecture includes the ESM assembly having an ESM with an energy source, and a ML-DAB connected to the energy source to source current therefrom, or send current thereto, or both. The system architecture includes a DC bus connected to the ESM assembly.Type: GrantFiled: February 15, 2019Date of Patent: December 15, 2020Assignee: Hamilton Sundstrand CorporationInventors: Matthew L. Wilhide, Frank Z. Feng
-
Patent number: 10847970Abstract: A system for controlling inrush current between a power source and a load includes an output capacitor configured to be coupled in parallel with the load. The system also includes a transistor having a gate, a collector configured to be coupled to the power source, and an emitter configured to be coupled to the load. The system also includes a collector resistor coupled between the collector of the transistor and the gate of the transistor. The system also includes an emitter capacitor coupled between the gate of the transistor and the emitter of the transistor to facilitate current flow from the power source through the collector resistor and the emitter capacitor to charge the output capacitor.Type: GrantFiled: January 19, 2018Date of Patent: November 24, 2020Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Frank Z. Feng, Randall Bax, Ryan W. Schmid, Huazhen (Harry) Chai
-
Patent number: 10833502Abstract: A system for controlling inrush current between a power source and a load includes an output capacitor coupled in parallel with the load, and a transistor having a gate, a collector configured to be coupled to the power source, and an emitter configured to be coupled to the load. The system also includes a supply resistor configured to be electrically coupled between the power source and the load and to provide a resistor charging current from the power source to the output capacitor to charge the output capacitor in response to initial power being provided by the power source. The system also includes a gate resistor having a first terminal coupled to the gate of the transistor to cause the transistor to operate in a linear mode in response to the initial power being provided by the power source to increase a speed of charging the output capacitor.Type: GrantFiled: January 19, 2018Date of Patent: November 10, 2020Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Frank Z. Feng, Randall Bax, Ryan W. Schmid, Huazhen (Harry) Chai
-
Patent number: 10804023Abstract: An inductor includes a printed wiring board (PWB) and a plurality of electrically-conductive heat pipes operatively connected to the PWB. The PWB includes electrically conductive traces electrically connected to the plurality of electrically-conductive heat pipes. The traces and plurality of electrically conductive heat pipes form an inductor winding. A method of manufacturing an inductor includes mounting a plurality of electrically conductive heat pipes to a printed wiring board (PWB), wherein the PWB includes electrically conductive traces to connect the plurality of electrically-conductive heat pipes to form an inductor winding.Type: GrantFiled: December 15, 2016Date of Patent: October 13, 2020Assignee: Hamilton Sundstrand CorporationInventors: Debabrata Pal, Harry H. Chai, Dwight D. Schmitt, Frank Z. Feng, Charles Shepard
-
Publication number: 20200287475Abstract: A dual-output AC-DC power converter with balanced DC output voltages is described. The DC power source has balanced DC voltage outputs relative to DC midpoint irrespective of DC load imbalance. The input to the power source is three-phase four-wire AC voltage source. Current draws from the AC three-phase voltage source have 12-pulse near sinusoidal waveform. Ripple voltage from DC positive rail to DC negative rail is 12-pulse.Type: ApplicationFiled: May 27, 2020Publication date: September 10, 2020Inventor: Frank Z. Feng
-
Publication number: 20200266728Abstract: An energy storage module (ESM) assembly includes an ESM having an energy source and a multi-level dual active bridge (ML-DAB). The ML-DAB is connected to the energy source to source current therefrom, or send current thereto, or both. A system architecture includes the ESM assembly having an ESM with an energy source, and a ML-DAB connected to the energy source to source current therefrom, or send current thereto, or both. The system architecture includes a DC bus connected to the ESM assembly.Type: ApplicationFiled: February 15, 2019Publication date: August 20, 2020Inventors: Matthew L. Wilhide, Frank Z. Feng
-
Patent number: 10742133Abstract: A dual-output AC-DC power converter with balanced DC output voltages is described. The DC power source has balanced DC voltage outputs relative to DC midpoint irrespective of DC load imbalance. The input to the power source is three-phase four-wire AC voltage source. Current draws from the AC three-phase voltage source have 12-pulse near sinusoidal waveform. Ripple voltage from DC positive rail to DC negative rail is 12-pulse.Type: GrantFiled: January 25, 2019Date of Patent: August 11, 2020Assignee: HAMILTON SUNSTRAND CORPORATIONInventor: Frank Z. Feng
-
Publication number: 20200244179Abstract: A dual-output AC-DC power converter with balanced DC output voltages is described. The DC power source has balanced DC voltage outputs relative to DC midpoint irrespective of DC load imbalance. The input to the power source is three-phase four-wire AC voltage source. Current draws from the AC three-phase voltage source have 12-pulse near sinusoidal waveform. Ripple voltage from DC positive rail to DC negative rail is 12-pulse.Type: ApplicationFiled: January 25, 2019Publication date: July 30, 2020Inventor: Frank Z. Feng