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.