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Publication Title | UnitedStatesPatent Gilbreth et al. TRANSIENT TURBINE EXHAUST TEMPERATURE CONTROL FOR A TURBOGENERATOR

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(12)UnitedStatesPatent Gilbreth et al.

(54) TRANSIENT TURBINE EXHAUST TEMPERATURE CONTROL FOR A TURBOGENERATOR

(75) Inventors:MarkGilbreth,SimiValley,CA(US); Joe] Wacknov, Thousand Oaks, CA

(Us); Simon Wall, Thousand Oaks, CA (Us); Ed Edelman, Agoura Hills, CA (Us)

(73) Asigne: CapstoneTurbineCorporation,

US006612112B2 (10)PatentN0.: US 6,612,112B2

(*)

(21) (22) (65)

(63) (60)

(51)

(52) (58)

(56)

Notice:

h tsWorth CA (US) Ca’

Subject to any disclaimer, the term of this patent is extended or adjusted under 35

U.S.C. 154(b) by 0 days.

’’ / lege et-a' 4,340,820 A 7/1982 Meyer-Prttroff et al.

L, _d (1stConnnue onnextpage‘)

FOREIGN PATENT DOCUMENTS

3634328 A1 4/1987 0 472 294 A1 2/1992 0679800A2 11/1995

Appl. No.: 10/012,770 .

DE EP EP

EP EP

W0 W0 W0 W0 W0

Filed:

Nov. 5,2001

...

Prior Publication Data

US 2002/0121091 A1 Sep. 5, 2002 Related US. Application Data

Continuation-in-part of application No. 09/207,817, ?led on Dec. 8, 1998, now Pat. No. 6,487,096. ProvisionalapplicationNo.60/245,829,?ledonNov.3, 2000.

Int. c1.7 .. F02C 9/28

US. Cl. .60/773; 60/39281 FieldofSearch..60/39281,773

References Cited U'S' PATENT DOCUMENTS

0 837 231 A2 0 901 218 A2

WO 94/27359 WO 98/25014 WO 99/32762 WO 99/52193 WO 00/28191

4/1998 3/1999

11/1994 6/1998 7/1999

10/1999 5/2000

2,864,244 A 3,124,924 A 32507973 A

2 ,,

3,703,076 A

3,724,214 A 3,764,815 A

12/1958 Prachar 3/1964 Smith 5/1966 Dawson

go?nerb k t I 0 one ec e a.

11/1972 Hagemeister

4/1973 Bryant 10/1973 Habock etal.

Primary Examiner—Louis J. Casaregola

(74) Attorney, Agent, or Firm—Sterne, Kessler, Goldstein & FOX P-L-L-C

(57) ABSTRACT

A turbogenerator 1's controled by a temperature l00p that provides fuel to the combustor to maintain a desired turbine

exhaust temperature, and by a speed control loop that controls the speed of the turbogenerator to provide a desired poWeroutput.When thedesiredpoWeroutputisreduced,the turbogeneratorspeedisreducedaccordingly,andthedesired turbine exhaust temperature is increased temporarily to maintain suf?cient fuel How to the combustor to prevent

_ combustor ?ame out‘

6 Claims, 7 Drawing Sheets

300

Power(W)

306

3°‘ h 3” 2531321304 Deadband

lNVPLM K|NvpLs TETLEL ’ TETLIM TINVPLS+1

I

@l

EngineSpeed *v

TSETO

(45) Date of Patent:

Sep. 2, 2003

3,809,914 A 3,829,758 A 3,937,974 A 3,991,357 A 4,005,581 A 4,015,187 A 4,039,914 A 4,093,869 A

5/1974 Kilgoreeta1. 8/1974 Studtmann 2/1976 LafuZe

4,119,861 4,258,424

A A

11/1976 Kaminski 2/1977 AaIlStad

3/1977 Sasakietal. 8/1977 Steigerwaldetal. 6/1978 Hoffmann etal.

10/1978 Gocho 3/1981 Girasetal.

308 . 310

TETSPT

2 g/ ghnsimetlal'

TET Setpoint

Image | UnitedStatesPatent Gilbreth et al. TRANSIENT TURBINE EXHAUST TEMPERATURE CONTROL FOR A TURBOGENERATOR



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