公开(公告)号：AU559325B2

公开(公告)日：1987-03-05

申请号：AU2099983

申请日：1983-11-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HARNER KERMIT IVAN ,  NIESSEN FRANK RICHARD ,  SHERMAN ROBERT

IPC: F03D7/04 ,  F03D7/02

Abstract: A blade pitch angle control system for a wind turbine includes an improved control means (95) for providing a minimum pitch angle reference signal indicative of desired blade pitch at wind velocities less than rated. The control means includes means (35 and 30) for providing signals indicative of generated (output power or torque and the rotational frequency of the wind turbine rotor. The output and rotor speed signals are input to a function generator which, in rsponse to such signals, provides a signal indicative of the minimum pitch angle.

公开(公告)号：FI66240C

公开(公告)日：1984-09-10

申请号：FI792920

申请日：1979-09-19

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SHERMAN ROBERT ,  ROTHMAN EDWARD ALLEN ,  MANDELBAUM WILLIAM

IPC: F03D1/06 ,  F03D11/00

公开(公告)号：ZA8308157B

公开(公告)日：1984-06-27

申请号：ZA8308157

申请日：1983-11-01

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HARNER KERMIT IVAN ,  NIESSEN FRANK RICHARD ,  SHERMAN ROBERT

IPC: F03D7/04 ,  F03D7/02 ,  F03D ,  H02K

CPC classification number: F03D7/0224 ,  F05B2220/706 ,  F05B2260/74 ,  F05B2270/328 ,  Y02E10/723 ,  Y02E10/725

公开(公告)号：AU2099983A

公开(公告)日：1984-05-24

申请号：AU2099983

申请日：1983-11-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HARNER KERMIT IVAN ,  NIESSEN FRANK RICHARD ,  SHERMAN ROBERT

IPC: F03D7/04 ,  F03D7/02

Abstract: A blade pitch angle control system for a wind turbine includes an improved control means (95) for providing a minimum pitch angle reference signal indicative of desired blade pitch at wind velocities less than rated. The control means includes means (35 and 30) for providing signals indicative of generated (output power or torque and the rotational frequency of the wind turbine rotor. The output and rotor speed signals are input to a function generator which, in rsponse to such signals, provides a signal indicative of the minimum pitch angle.

公开(公告)号：CA1146078A

公开(公告)日：1983-05-10

申请号：CA371858

申请日：1981-02-26

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BARNES PHILIP E ,  MAYO MILLARD G ,  SHERMAN ROBERT

IPC: F03D7/04 ,  F03D7/02 ,  F03D7/06

Abstract: Wind Turbine Blade Pitch Control System A pitch control system for a multibladed variable pitch wind turbine. Each of the turbine blades is pivotally driven about the longitudinal axis thereof independently of the other blades by at least a pair of hydraulic actuators. The actuators are supplied with pressurized hydraulic fluid from a first source thereof under conditions of normal pitch change adjustment. Under conditions wherein feathering of the blades is required, the actuators are supplied with hydraulic fluid from second sources thereof such that one of the actuators associated with each of the blades is supplied with fluid from one second source and a second actuator is provided with fluid from a redundant second source whereby blade feathering may be effected despite a malfunction of one of the redundant sources or one of the actuators. In one of the two preferred embodiments disclosed, the first and second fluid sources are maintained in mutual communication whereby fluid from the second sources thereof may supplement fluid from the first source under conditions of normal blade pitch adjustment.

公开(公告)号：CA1117428A

公开(公告)日：1982-02-02

申请号：CA332867

申请日：1979-07-31

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SHERMAN ROBERT ,  ROTHMAN EDWARD A ,  MANDELBAUM WILLIAM

IPC: F03D1/06 ,  F03D11/00 ,  F03D3/06 ,  B64C11/04

Abstract: WIND TURBINE BLADE RETENTION DEVICE A large wind turbine rotor blade having a filament wound composite spar securely mounted to a support structure in a manner by which blade loads are transmitted via redundant load paths. Concentric inner and outer metallic adapter sleeves are bonded to the inboard end of the blade spar, and the adapter sleeves and blade spar are joined by a first series of shear bolts and nuts which pass radially through the spar. A second series of radially extending bolts and nuts join the inner and outer sleeves slightly inboard of the end of the spar. The end of the spar is of slightly reduced diameter forming a conical surface which interacts with the inner and outer sleeves to produce a positive lock when the blade is subject to centrifugal loads. The outer sleeve is adapted to be connected to the support structure by conventional techniques such as by a plurality of both which extend axially into the butt end of the outer sleeve.

公开(公告)号：IT8120376D0

公开(公告)日：1981-03-17

申请号：IT2037681

申请日：1981-03-17

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SHERMAN ROBERT ,  BARNES PHILIP EARL ,  MAYO MILLARD GIRARD

IPC: F03D7/04 ,  F03D7/02 ,  F03D

Abstract: A pitch control system for a multibladed variable pitch wind turbine. Each of the turbine blades is pivotally driven about the longitudinal axis thereof independently of the other blades by at least a pair of hydraulic actuators. The actuators are supplied with pressurized hydraulic fluid from a first source thereof under conditions of normal pitch change adjustment. Under conditions wherein feathering of the blades is required, the actuators are supplied with hydraulic fluid from second sources thereof such that one of the actuators associated with each of the blades is supplied with fluid from one second source and a second actuator is provided with fluid from a redundant second source whereby blade feathering may be effected despite a malfunction of one of the redundant sources or one of the actuators. In one of the two preferred embodiments disclosed, the first and second fluid sources are maintained in mutual communication whereby fluid from the second sources thereof may supplement fluid from the first source under conditions of normal blade pitch adjustment.

公开(公告)号：DE2611403A1

公开(公告)日：1976-10-07

申请号：DE2611403

申请日：1976-03-18

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SHERMAN ROBERT

IPC: F15B9/08 ,  F02C9/26 ,  F02C9/54 ,  F15B13/16 ,  F15B11/15 ,  F02C9/04

公开(公告)号：DK167235B1

公开(公告)日：1993-09-20

申请号：DK508483

申请日：1983-11-07

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HARNER KERMIT IVAN ,  NIESSEN FRANK RICHARD ,  SHERMAN ROBERT

IPC: F03D7/04 ,  F03D7/02

Abstract: A blade pitch angle control system for a wind turbine includes an improved control means (95) for providing a minimum pitch angle reference signal indicative of desired blade pitch at wind velocities less than rated. The control means includes means (35 and 30) for providing signals indicative of generated (output power or torque and the rotational frequency of the wind turbine rotor. The output and rotor speed signals are input to a function generator which, in rsponse to such signals, provides a signal indicative of the minimum pitch angle.

公开(公告)号：CA2003810A1

公开(公告)日：1990-06-01

申请号：CA2003810

申请日：1989-11-24

Applicant: UNITED TECHNOLOGIES CORP

Inventor： GILLOTT MICHAEL A ,  VOSSELLER KENNETH F ,  SHERMAN ROBERT ,  HANSEN KENNETH P

IPC: F02C9/28 ,  F02C9/26 ,  F16F15/12

Abstract: Vibration Damper The backlash spring of a fuel control linkage is enclosed by an elastomeric sleeve which absorbs the energy of multiple resonant modes stimulated in the spring by vibratory fields. Deflections of large amplitude in the spring are minimized thereby. The sleeve has a plurality of ribs which extend axially therein and which provide an interference fit with the coils of the spring. The sleeve ribs contact as many of the spring coils as possible but minimize interference of the sleeve with the motion of the spring during the normal articulation thereof. H1900-CC