Patents for F03D 7 - Controlling wind motors (12,710)
09/1989
09/13/1989CN1035547A Control hub for adjusting pitch of wind turbo-propeller
08/1989
08/31/1989DE3805370A1 Windkraftmaschine Wind power machine
08/24/1989WO1989007713A1 Wind power engine
08/01/1989CA1258092A1 Variable speed wind turbine
07/1989
07/25/1989US4850792 Wind turbine
07/19/1989EP0235149B1 Enclosed wind-power machine with eccentric rotor axis
06/1989
06/28/1989CN2040168U Wind adjustable vertical shaft wind-driven engine
06/28/1989CN2040166U Windmill with automatically-adjustable vanes
06/20/1989CA1256159A1 Torque control for a variable speed wind turbine
06/14/1989EP0214149B1 Rotor of a wind machine
06/13/1989US4838757 Wind turbine system using a savonius type rotor
05/1989
05/31/1989CN2038559U Wind-electricity and photoelectricily complementary device
05/30/1989US4834610 Wind processing air turbine, and methods of constructing and utilizing same
05/24/1989CN1004292B Straight vane vertical shaft blower
05/10/1989CN1032835A Regulating device for maintaining contant rotary speed in turbines
05/03/1989CN1004092B Wind energy converter
04/1989
04/26/1989CN2036586U Impeller speed-stabilizing device for wind-driven generator set
04/12/1989CN2035808U Automatically-regulating-speed elastic vibration-damping wheel of wind motor
04/12/1989CN2035806U Transverse-blade tail-wind-running wind motor for electric generation
04/11/1989CA1252392A1 Wind turbine system using a savonius type rotor
04/04/1989US4818181 Wind turbine
04/04/1989US4818180 Vertical-axle wind turbine
03/1989
03/28/1989US4815936 Wind turbine shutdown system
03/23/1989WO1989002531A1 Regulating device for maintaining constant the rotary speed in turbines
01/1989
01/26/1989WO1989000647A1 Wind power plant construction
01/24/1989US4799860 Wind-energy converter
12/1988
12/29/1988DE3719926A1 Wind motor
12/20/1988US4792281 Wind turbine pitch control hub
12/06/1988US4789297 Enclosed wind device mechanism with eccentric rotor shaft
11/1988
11/29/1988US4787819 Windmill device
11/24/1988DE3714859A1 Combination gearing for small wind and water power plants
11/24/1988DE3714858A1 Gearing for small wind and water power plants
11/22/1988CA1245283A1 Wind energy conversion system
11/15/1988US4784568 Wind turbine system using a vertical axis savonius-type rotor
10/1988
10/18/1988US4778344 Variable pitch mechanisms
10/06/1988WO1988007782A1 Electric generator
09/1988
09/27/1988US4773824 Rotor of a wind power installation
09/01/1988DE3722022C1 Actuator
08/1988
08/30/1988US4767939 Wind driven electric current producer
08/03/1988EP0276904A1 Wind turbine and device for its safety
08/03/1988EP0276764A2 Wind motor
08/03/1988CN87214618U Worm wheel type windmill with automatic control attack angle
07/1988
07/28/1988WO1988005499A1 Wind turbine
07/20/1988CN87100263A Shutter folding wind-powered engine
07/14/1988DE3702001A1 Wind turbine
06/1988
06/28/1988CA1238582A1 Wind turbine
06/28/1988CA1238581A1 Wind turbine with damper
06/22/1988CN87210119U Speed-regulating device for wind power generator
06/01/1988DE3640121A1 Control energy station
05/1988
05/31/1988US4748339 Wind turbine operated electrical generator system
05/11/1988EP0266715A2 Wind turbine pitch control hub
05/02/1988EP0247139A4 Wind turbine system using a savonius-type rotor.
04/1988
04/21/1988DE3634746A1 Control flap of a wind turbine for speed governing and for protection in gales
03/1988
03/29/1988CA1234543A1 Blade pitch angle control for large wind turbines
03/29/1988CA1234542A1 Minimization of the effects of yaw oscillations in wind turbines
03/09/1988EP0258926A1 Wind turbine rotor with two rotor blades
03/08/1988US4729716 Wind turbine
02/1988
02/25/1988DE3628626A1 Propeller windmill with expanded field of application
02/17/1988EP0138873B1 Wind generator having a centrifugal force device limiting the rotation speed of the shaft of the propeller, and means for stopping and locking said propeller and associated to such device
01/1988
01/12/1988US4718822 Vertically oriented wind driven assembly
01/12/1988US4718821 Windmill blade
12/1987
12/29/1987US4715782 Hydraulic control device for wind turbine
12/29/1987US4715776 Wind turbine system using a savonius type rotor
12/02/1987EP0247139A1 Wind turbine system using a savonius-type rotor.
12/01/1987US4710101 Wind turbine
11/1987
11/17/1987US4707617 Windmill apparatus
11/04/1987EP0244341A1 Speed avoidance logic for a variable speed wind turbine
10/1987
10/29/1987DE3613871A1 Method for operating a system for using wind energy
10/27/1987US4703189 Torque control for a variable speed wind turbine
10/13/1987US4700081 Speed avoidance logic for a variable speed wind turbine
09/1987
09/22/1987US4695736 Variable speed wind turbine
09/09/1987EP0236036A2 Wind turbine
09/09/1987EP0235149A1 Enclosed wind-power machine with eccentric rotor axis.
09/08/1987US4692095 Wind turbine blades
09/08/1987US4692094 Rotary positionable installation
07/1987
07/15/1987EP0229001A1 Vertical axis windmill converting wind energy into heat
07/07/1987US4678923 Windmill
07/07/1987CA1223822A1 Windmill rotor
06/1987
06/23/1987US4674954 Wind turbine with damper
06/16/1987US4673822 Wind electric generator
06/09/1987US4671742 Water supply system, energy conversion system and their combination
06/04/1987WO1987003340A1 Wind turbine system using a savonius-type rotor
05/1987
05/27/1987EP0223731A1 A variable speed wind turbine
05/27/1987EP0223729A1 Torque control for a variable speed wind turbine
05/27/1987EP0222780A1 Wind energy converter
05/13/1987CN86103147A Wind energy conuerter
05/12/1987US4664596 Vertical axis wind turbine and components therefor
04/1987
04/21/1987US4659284 Wind turbines, improved gear box assemblies, and a braking system adaptable for use with such wind turbines and improved gear box assembly
04/14/1987CA1220390A2 Overspeed device
04/07/1987US4656362 Blade pitch angle control for large wind turbines
03/1987
03/31/1987US4653982 Windmill with controller for controlling rotor RPM
03/24/1987US4652206 Wind turbine
03/18/1987EP0214149A1 Rotor of a wind machine.
03/17/1987US4651017 Wind energy conversion system
03/10/1987US4649284 Windmill
02/1987
02/25/1987CN85105331A Straight vane vertical shaft blower
02/04/1987EP0210175A1 Ram air turbine
02/03/1987US4641039 Wind motors and aerogenerators
01/1987
01/13/1987US4636707 Power generating equipment
12/1986
12/30/1986US4632637 Wind turbine