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특허 상세정보

Auxiliary power unit system and method of operating an auxiliary power unit

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H02P-009/04   
미국특허분류(USC) 322/022 ; 322/038 ; 307/084
출원번호 US-0467786 (1999-12-20)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Astle
인용정보 피인용 횟수 : 22  인용 특허 : 19
초록

An auxiliary power unit ("APU") system and methods used to bring such system on-line and off-line are disclosed. An APU generator forming part of an APU system, is brought "on-line" smoothly in order to replace a primary generator operating at a steady-state rotational speed that is interconnected with a load. A controller forming part of the APU system controls rotational speed of the APU and thereby the generator so that it approaches a rotational speed beneath the steady-state rotational speed of the primary generator. The controller then connects the...

대표
청구항

[ What is claimed is:] [1.]1. A method of operating an auxiliary power unit ("APU") generator forming part of an APU system, to replace a primary generator operating at a steady-state rotational speed interconnected with a load, said method comprising in sequence, the steps of:a. adjusting rotational speed of said APU generator, until said APU generator speed is beneath said steady-state rotational speed;b. interconnecting said APU generator to said load and said primary generator, thereby causing said APU generator to motor at said steady-state rotation...

이 특허에 인용된 특허 (19)

  1. Cronin Michael J. (Sherman Oaks CA). AC Motor-starting for aircraft engines using APU free turbine driven generators. USP1984064456830.
  2. Artinian Vatche ; Brim Terry ; Matulich Dan ; Murry Roger. Aircraft electrical power system including air conditioning system generator. USP1999085939800.
  3. Takeuchi Tohru (Zushi JPX). Closed loop rotational speed control system for gas turbine engine electric generator. USP1980014184083.
  4. Lampe Steven W. (San Diego CA). Clutch to disconnect loads during turbine start-up. USP1992125174109.
  5. Reynolds, Richard W.. Combined engine-starter and accessory drive system. USP1985094542722.
  6. Faulkner Dennis T. (Rockford IL) Glennon Timothy F. (Rockford IL) Markunas Albert L. (Roscoe IL). Compressor load control for an auxiliary power unit. USP1983014370560.
  7. Diemer John W. (Rockford IL) Teagardin Michael D. (Rockford IL). Cross-start bus configuration for a variable speed constant frequency electric power system. USP1990104967096.
  8. Kilroy Donald G. ; Ludicky Frank Joseph. Digital no-break power transfer system. USP1998035729059.
  9. Glennon Timothy F.. Fault tolerant starting/generating system. USP2000036037752.
  10. Roseman Ronald W. (Walton Hills OH) Rice Kevin E. (Stow OH). Field current control for generator during build-up. USP1997095663632.
  11. Birch Peter H. (Horsham GBX) Ikeyama Takeshi (Brighton GBX) Wearing Anthony D. (Brighton GBX) Norton Mark G. (Hove GBX). Gas turbine engine driven auxiliary electric power unit with turbine speed controlled in response to generator output cu. USP1997065635768.
  12. Rumford Kimball J. (Fairfield CT) Hudson George (Great Barrington MA). Gas turbine motor drive. USP1993025184456.
  13. Rumford Kimball J. (Fairfield CT) Ben-Porat Avi (Norwalk CT) Hudson George (Great Barrington MA). Management of electrically driven engine accessories. USP1992105152141.
  14. Jesrai Tariq (Tempe AZ) Carlson Todd S. (Chandler AZ). Method for accelerating a gas turbine engine. USP1992075127220.
  15. Cronin Michael J. (Sherman Oaks CA). Multi role primary/auxiliary power system with engine start capability for aircraft. USP1985014494372.
  16. Romero Daniel (Mesa AZ) Kubinski Ronald J. (Tempe AZ) Benham ; Jr. Durward S. (Phoenix AZ) Koerner Michael S. (Harbor City CA) Goldberg Scott J. (West Minster CA) Kingery Barry J. (Phoenix AZ). Multifunction secondary power system starting method. USP1995045408821.
  17. Glennon Timonthy F.. Redundant starting/generating system. USP2000016018233.
  18. Baker Donal E. (Rockford IL). Starter/generator system and method utilizing a low voltage source. USP1996025493201.
  19. Rozman Gregory I. (Rockford IL) Markunas Albert L. (Roscoe IL) Nuechterlein Paul E. (Rockford IL). Starter/generator system with variable-frequency exciter control. USP1997015594322.

이 특허를 인용한 특허 피인용횟수: 22

  1. Al-Khairy, Issam. Aircraft APU electrical starter torque limiter. USP2014088808142.
  2. Thompson,Robert G.. Auxiliary power unit control method and system. USP2008057367193.
  3. Akasam,Sivaprasad; Johnson,Kris W.; Johnson,Matthew D.; Slone,Larry M.; Welter,James Milton. Auxiliary power unit for moving a vehicle. USP2009027484583.
  4. Jan, David K.; Zollars, Christopher. Auxiliary power units (APUs) and methods and systems for activation and deactivation of a load compressor therein. USP2016079382910.
  5. Schwarz, Frederick M.. Cabin air supercharged aircraft internal combustion engine. USP2013078480460.
  6. Kamimura, Kenji; Shimizu, Motohiro. Capacitor-compensation-type generator. USP2012018106524.
  7. Nierlich, Florent; Annee, Etienne; Leynaert, Francois-Noel. Control network for single- or multi-motor actuators, the network being particularly adapted to aviation applications such as powering the motors of landing-gear hook units. USP2015099148023.
  8. Suttie, Peter; Schmidt, Dennis E.; Mehrer, Michael E.; Mack, Tarrence LaMar. Control system for an auxiliary power unit. USP2004086777822.
  9. Pascu, Victor; Jones, Anthony C.. Engine speed optimization as a method to reduce APU fuel consumption. USP2017129845806.
  10. Parsons, Douglas A.; Semyanko, Constantine. Fuel supply control for a gas turbine including multiple solenoid valves. USP2004096786049.
  11. Barisione,Mario; Cacciacarne,Stefano; Torlai,Marco. Gas turbine control system. USP2006027000376.
  12. Jones, Anthony C.; Beecroft, Charles. Gearless turbo-generator. USP2012118310076.
  13. Bernardi,John Jay; Goldammer,Timothy Allen; Morrical,Brian Todd. Machine with an electrical system. USP2007117291934.
  14. Suttie, Peter J.. Method and system for facilitating no-break power transfer. USP2009057528499.
  15. Suttie,Peter J.. Method and system for facilitating no-break power transfer. USP2008087417337.
  16. Eick, Chris D.; Gaines, Louie T.; Laidlaw, Mitchell J.; Benson, Dwayne M.; Portolese, Larry A.; Flaherty, Brian L.; Pearson, Wayne T.. More electric aircraft power transfer systems and methods. USP2009067552582.
  17. Suttie, Peter J.. No break electric power transfer system. USP2004106806589.
  18. McGinley,Ray M.. No-break-power-transfer control system for variable frequency electrical power systems. USP2007087254465.
  19. Mehrer, Michael E.; Spencer, John P.; Vaziri, Massoud. Power distribution system and load management protocol therefor. USP2009117622821.
  20. Burns, Donald W.. System, propulsion system and vehicle. USP2015028955335.
  21. Burns, Donald W.. System, propulsion system and vehicle. USP20181010094235.
  22. Thompson, Robert G.. Turbocharged auxiliary power unit with controlled high speed spool. USP2004056735951.