Skaare
Bjorn Skaare, Trondheim NO
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20110316277 | Blade Pitch Control in a Wind Turbine Installation - The present invention relates to a blade pitch controller for a floating wind turbine structure, wherein the floating wind turbine structure may include a support structure supporting a rotor having a number of blades. The controller may include standard blade pitch control means and active damping means. The standard blade pitch control means is arranged to control a blade pitch using a transfer function between a rotor speed error and the blade pitch. The active damping means is arranged to further control the blade pitch on the basis of a speed of a point on the wind turbine structure by converting the speed of a point on the wind turbine structure into a rotor speed error and using the same transfer function that is used in the standard blade pitch control means to convert the rotor speed error into a correction to the blade pitch. | 12-29-2011 |
20120098265 | EXTRACTING WAVE ENERGY IN A WIND TURBINE INSTALLATION - A controller for a floating wind turbine is adapted to cause the wind turbine to extract energy from wave-induced motion of the turbine. The controller controls the rotor speed of the turbine by controlling the torque of the load presented to the rotor such that the rotor speed varies in response to wave-induced motion. | 04-26-2012 |
Bjorn Skaare, Bergen NO
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20080260514 | Method for Damping Tower Vibrations in a Wind Turbine Installation - A method in connection with a wind turbine installation for damping tower vibrations, in particular a floating wind turbine installation comprising a floating cell, a tower arranged over the floating cell, a generator mounted on the tower that is rotatable in relation to the wind direction and fitted with a wind turbine, and an anchor line arrangement connected to anchors or foundations on the sea bed. The tower's eigenvibrations, ω | 10-23-2008 |
20100045038 | Method for the Damping of Tower Oscillations in Wind Power Installations - A method for controlling a wind turbine installation for the damping tower oscillations, in particular a buoyant wind turbine installation comprising a buoyant body, a tower arranged over the buoyant body, a generator mounted on the tower that is rotatable in relation to the wind direction and fitted with a wind turbine, and an anchor line arrangement connected to anchors or foundations on the sea bed. The tower oscillations are damped by the control with the blade angle controller in the constant power or RPM range of the wind turbine being performed by the rotor velocity (which is the input to the blade angle controller) being estimated in an estimator for the wind turbine. The input to the wind turbine estimator is the estimated incoming wind, so that the tower movements are not visible to the blade angle controller. Negative damping is thus not introduced into the system and the tower oscillations will be expediently damped, while there is also less variation in blade angle, thrust on the rotor and power supplied. | 02-25-2010 |
Bjørn Skaare, Trondheim NO
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20150354532 | CONTROLLING MOTIONS OF FLOATING WIND TURBINES - A motion controller for a floating wind turbine with a plurality of rotor blades, is arranged to control a motion of the floating wind turbine in a yaw direction. The controller adjusts the blade pitch of each rotor blade so as to create a net force to control the motions. The controller includes a control action which is proportional to a yaw offset angle and/or a control action which is proportional to an integral of the yaw offset angle. | 12-10-2015 |
Kathleen Skaare, Newton, MA US
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20120100566 | CHEMILUMINESCENT COMPOSITIONS, METHODS, ASSAYS AND KITS FOR OXIDATIVE ENZYMES - Chemiluminescent compositions, methods, assays and kits for oxidative enzymes are described. Further disclosed are dioxetane compounds of the form: 0-0 ΛR R R T (i) where R can independently be any branched alkyl or cycloalkyl group which provides stabilization for the dioxetane or where both R groups together form a cycloalkyl or polycycloalkyl moiety spiro bound to the dioxetane ring, wherein each R group or the spiro bound moiety can be unsubstituted or substituted with one or more electron-withdrawing groups or electron donating groups, or groups providing preferential oxidative isozyme substrate recognition, and wherein Ri is an aryl group, or an alkyl group of 1-20 carbon atoms, which can be optionally substituted with 1 or more halogen atoms, and wherein T is an aryl or heteroaryl ring capable of emitting light upon enzyme activated decomposition of the dioxetane I. Kits, methods and assays are also disclosed that comprise the dioxetane compounds. | 04-26-2012 |
20150284766 | CHEMILUMINESCENT COMPOSITIONS, METHODS, ASSAYS AND KITS FOR OXIDATIVE ENZYMES - Chemiluminescent compositions, methods, assays and kits for oxidative enzymes are described. Further disclosed are dioxetane compounds of the form: | 10-08-2015 |
Kristian Louis Skaare, Plantation, FL US
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20120233799 | BRUSH WITH RETRACTABLE BRISTLES FOR EASY CLEANING - A brush wherein the bristles are retractable to facilitate the cleaning thereof in an efficient and effective manner. The apparatus generally comprises bristles disposed on a bristle-holding tree, wherein the bristles extend through apertures of a housing in an extended position. There is also provided a stem base engaged with the bristle-holding tree such that the stem base imparts longitudinal force upon the bristle-holding tree, causing the bristle-holding tree to move longitudinally relative to the housing, causing the bristles to move from an extended position to a retracted position to permit easy cleaning of hair from the brush. The brush provides locking capabilities which allow a user to hold the brush in one hand and remove hair with the free hand. | 09-20-2012 |
Larry I. Skaare, Williston, ND US
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20090104358 | CORROSION AND SCALE INHIBITION COMPOSITIONS AND METHODS OF USE THEREOF - Improved multi-component compositions are provided for treating metallic surfaces subjected to contact with hydrocarbons, such as producing well casings and downhole equipment, and transmission lines. The compositions include an epoxy, a cross-linking or curing agent for the epoxy (e.g., ethoxylated tallow amine), and a scale inhibitor including phosphonic acid or phosphonate moieties (e.g., an organic phosphonate such as DETA phosphonate). The compositions may be added to a well or transmission line as a unitary, three-component mixture, or the epoxy may be initially added, followed by the cross-linking or curing agent, and the scale inhibitor. The compositions provide long-term scale inhibition without the need for continuous metered addition of scale inhibitor | 04-23-2009 |
20090155599 | CORROSION AND SCALE INHIBITION COMPOSITIONS AND METHODS OF USE THEREOF - Improved multi-component compositions are provided for treating metallic surfaces subjected to contact with hydrocarbons, such as producing well casings and downhole equipment, and transmission lines. The compositions include an epoxy, a cross-linking or curing agent for the epoxy (e.g., ethoxylated tallow amine), and a scale inhibitor including phosphonic acid or phosphonate moieties (e.g., an organic phosphonate such as DETA phosphonate). The compositions may be added to a well or transmission line as a unitary, three-component mixture, or the epoxy may be initially added, followed by the cross-linking or curing agent, and the scale inhibitor. The compositions provide long-term scale inhibition without the need for continuous metered addition of scale inhibitor | 06-18-2009 |
Truls Skaare, Abingdon GB
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20100299123 | WELL PLACEMENT IN A VOLUME - Implementations of well placement in a volume are described. Some techniques described herein involve ascertaining a skeleton of a volume within a reservoir, and using the skeleton to map out a well topology to retrieve resources, such as hydrocarbons, from the volume. In one possible implementation, the skeleton can be found by generating a repulsive field throughout an interior of the volume, with the field decreasing with distance from the boundary of the volume. Interior points where a magnitude of the force drops to within a preset value are called critical points. The skeleton can be found by following outward flow from the volume from critical point to critical point. | 11-25-2010 |