Patents
Sitemap › F03 - Machines or engines for liquids; Wind, spring, or weight motors; Producing mechanical power or a reactive propulsive thrust, not otherwise provided for › F03D - Wind motors › F03D 7 - Controlling wind motors
Patents for F03D 7 - Controlling wind motors (12,710)
10/1992
10/13/1992US5155375 Speed control system for a variable speed wind turbine
10/07/1992EP0506749A1 Wind turbine.
09/1992
09/08/1992US5145324 RAM air turbine driving a variable displacement hydraulic pump
08/1992
08/20/1992WO1992014298A1 Variable speed wind turbine
08/06/1992WO1992013192A1 Self-braking windmill
07/1992
07/15/1992CN2110100U Wind vane automatic governing mechanism
06/1992
06/30/1992US5126584 Windmill
06/02/1992US5118255 Motor
05/1992
05/29/1992WO1992008896A1 Self-contained hydraulic moving servo-mechanism for lifting movements on a rotating shaft
05/27/1992EP0486765A1 Wind motor
05/14/1992DE4132967A1 Linear mechanical regulator appts. - is for wind power plant rotor blades and is of centrifugal type adjusting blades indirectly via mechanism
05/14/1992DE4035831A1 Wind power plant with generator driven by rotating impeller blades - has impeller blades on rods connected to their bearing in order that their axes turn themselves relative to wind
04/1992
04/30/1992DE4114870A1 Flywheel with adjustable mass inertia torque - has flywheel arm on rotor shaft with circulating mass fitted to flywheel at distance from rotor
04/21/1992US5106265 Wind-turbine wing with a pneumatically actuated spoiler
04/16/1992DE4032627A1 Wind-power rotor-blade suspension system - has lemniscate links in spherical rubber-and-metal bearings
04/15/1992EP0247139B1 Wind turbine system using a savonius-type rotor
04/14/1992CA1298792C Rotary wind-powered engine
03/1992
03/19/1992DE4029722A1 Wind power generator with speed-independent electrical output - has constant rate of differential rotation of rotor and stator with braking by hydraulic fluid pumping
03/17/1992US5096381 Regulating device for maintaining constant the rotary speed in turbines
03/17/1992US5096378 Control of a wind turbine
02/1992
02/20/1992WO1992002413A1 Process and device for balancing non-stationary cyclic forces in rotary systems
02/18/1992US5088884 Rotor assembly for fluid driven engine
02/13/1992DE4131615A1 Shutter on wind-power machine sail - closes along downstream side over movable seal for air passage
02/05/1992EP0469510A1 Method and apparatus to compensate for unsteady force changes in rotary systems
01/1992
01/28/1992US5083901 Electricity generating wind turbine
01/21/1992US5083039 Variable speed wind turbine
01/16/1992DE4021260A1 Grid rotor wind turbine - has control flaps cooperating with rotor openings for permanent rotor variability
12/1991
12/19/1991CA2019252A1 Method for regulating an air machine for the conversion of wind energy to useful energy, and machine for carrying out said method
12/12/1991DE4014685A1 Propeller wind power machine - has aerofoil blades with hinged flap on ŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸ leading edge
12/10/1991CA1292949C Wind turbine shutdown system
12/01/1991WO1991019093A1 Wind turbine cross wind machine
12/01/1991CA2064733A1 Wind turbine cross wind machine
11/1991
11/28/1991WO1991018203A1 Free-yaw, free-pitch wind-driven electric generator apparatus
10/1991
10/23/1991CN1055581A Mechanical blade range variator
10/15/1991US5057696 Vertical windmill with omnidirectional diffusion
10/09/1991EP0450696A1 Windmill
10/09/1991EP0450217A1 Improvements relating to control of a wind turbine
10/09/1991EP0449979A1 Vertical axis sail bladed wind turbine
10/09/1991EP0449902A1 Aerodynamic brake on a wind rotor for a windmill
09/1991
09/05/1991DE4024328A1 Balancing dynamic alternating forces of rotor systems - using axle deflection sensors and controlling positioned of small weights
08/1991
08/17/1991WO1991012429A1 Windmill
08/17/1991CA2075047A1 Windmill
08/13/1991CA1287585C Wind power plant construction
08/07/1991CN2082317U Aero-generator with anti-strong wind function
07/1991
07/30/1991US5035575 Yawing system for a wind mill
07/30/1991CA1286995C Vertical axis wind turbine
07/24/1991EP0438189A1 Wind turbine
07/23/1991CA1286609C Regulating device for maintaining constant the rotary speed in turbines
07/10/1991CN1013141B Means for adjusting angle of pitch of blade or blades of wind-powered generator
07/10/1991CN1013140B Wind-driving generator with blades with hydraulic pitch control
07/04/1991WO1991010066A1 Bearing arrangement for the rotor of a wind power engine
07/04/1991CA2072865A1 Rotor bearing assembly for a wind power engine
07/02/1991US5028209 Wind power plant construction
06/1991
06/27/1991WO1991009225A1 Wind turbine
06/12/1991CA2005292A1 Electric generator type windmill
06/11/1991CA1284820C Speed avoidance logic for a variable speed wind turbine
06/06/1991DE3939863A1 Wind power plant with eddy-current rotor brake - brought into operation by electronic switching circuit when speed violates margin of safety of rotor structure
06/04/1991CA1284621C Wind turbine system using a vertical axis savonius-type rotor
05/1991
05/16/1991DE3937910A1 Wind turbine blade - has hemi-spherical blade cups which can be rotated by governor
05/08/1991CN2076613U Automatic speed-regulating wind wheel and revolving body
05/01/1991CN2076170U Speed-limiting spring device for vertical spindle dual-diameter wind motor
04/1991
04/24/1991CN2075707U Plain wind generator
04/11/1991DE3933531A1 Vertical axis portable wind-powered generator - makes use of flaps with variable profile hinged sections
04/04/1991WO1991004412A1 Fluid driven motor
03/1991
03/06/1991CN2072602U Vertical shaft double-track wind machine retarding weight device
02/1991
02/20/1991CN1049397A Vertical axis rolling-wing type windmill
01/1991
01/17/1991DE3922573A1 Wind power plant with induction generator overload protection - responds quickly to increase in wind speed adjustment of turbine blades to stabilise generator torque
12/1990
12/12/1990CN1047722A Solar and wind-driven combination generator
10/1990
10/31/1990EP0394882A1 Aerodynamic brake for wind turbine blade
10/30/1990US4966525 Yawing device and method of controlling it
10/24/1990CN1046373A Low-resistance windmill with movable blades
10/10/1990EP0391705A2 Anti-stalling means on a windmill tail
10/10/1990EP0391704A1 Automatic feathering gear for windmill blades
10/02/1990US4960363 Fluid flow driven engine
09/1990
09/12/1990CN1009569B Swing wing type vertical windmill
08/1990
08/28/1990US4952119 Tip brake mechanism for a wind generator blade
08/21/1990US4950131 High-efficiency turbine, in particular for exploiting wind power in auxiliary power sources for aeronautical applications
08/09/1990DE3903399A1 Wind power installation
08/01/1990CN1009020B Control hub for adjusting pitch of wind turbo-propeller
07/1990
07/19/1990DE3900319A1 Fluid-flow engines having an adjustable contouring (shaping) grating (grid)
07/18/1990EP0377629A1 Regulating device for maintaining constant the rotary speed in turbines.
07/12/1990WO1990007823A1 Regulation and control system for a wind power plant
07/12/1990WO1990007647A1 Vertical axis sail bladed wind turbine
07/12/1990WO1990007646A1 Aerodynamic brake on a wind rotor for a windmill
05/1990
05/23/1990EP0368921A1 Wind power plant construction
05/16/1990EP0368374A1 Windmill
04/1990
04/05/1990WO1990003517A1 Method for regulating an aerial machine for the transformation of wind energy into useful energy and machine for implementing such method
03/1990
03/28/1990EP0360699A1 Method of controlling a wind motor, and wind motor for carrying out same
03/20/1990US4909703 Motion damping apparatus for wind driven propellers
03/06/1990US4906060 Apparatus and method for controlling the output frequency of a wind-driven alternator
01/1990
01/10/1990EP0350425A1 Wind turbine shutdown system
12/1989
12/21/1989DE3826124A1 Air turbine
12/20/1989EP0346711A2 High-efficiency turbine, in particular for exploiting wind power in auxiliary power sources for aeronautical applications
12/13/1989CN1037950A Wind-driven generator with blades with hydraulic pitch control
11/1989
11/22/1989CN1037379A Means for adjusting angle of pitch of blade or blades of wind-powered generator
11/08/1989CN1037017A Solar thermoelectric generating method and the equipment thereof
10/1989
10/31/1989US4877374 Self-regulating windmill
10/05/1989WO1989009336A1 Improvements in or relating to structures containing anisotropic material
10/04/1989CN1036064A Swing wing type vertical windmill
09/1989
09/19/1989US4867642 Wind mill wing with air brake
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