Abstract: A method of controlling an operation of a floating wind turbine which performs a yaw rotation, a roll rotation and a pitch rotation, which controls a parameter of the operation of the wind turbine by determining a pitch rotation; determining a roll rotation; calculating a pitch difference between the determined pitch rotation and a wind turbine pitch reference; calculating a roll difference between the determined roll rotation and a wind turbine roll reference; determining a pitch and roll impact value based on the pitch difference and the roll difference; determining a reference of the parameter based on a predefined reference of the parameter and the pitch and roll impact value; and controlling the parameter of the wind turbine based on the reference of the parameter.

Abstract: Multivariate graphs specific to a company's performance, alone or in relation to a benchmark, and methods for producing same include defining on a display screen an origin having a first value, extending from the origin at least three axes on the display screen, the axes being generally equidistant from each other and representing a respective variable, plotting on the display screen a value of each variable concerning the company as a point on a respective axis, and using the plotted points to interpolate first segments between the axes on the display screen. Benchmark information, extrinsic to the company, can be obtained, processed into a rating in the same manner as the company data, and superimposed for ready visual comparison of the company's performance to the obtained benchmark. The benchmark information, if shown, is distinguished from the company's performance graph.

Abstract: A method of determining a frequency of an oscillating movement of a wind turbine tower is provided, the wind turbine tower carrying a nacelle and a generator including a stator and a rotor, the oscillating movement causing a rolling movement of the nacelle, the method including obtaining a first signal indicative of rotor speed relative to the nacelle, obtaining a second signal indicative of rotor speed relative to ground, determining a first amplitude spectrum based on the first signal, determining a second amplitude spectrum based on the second signal, determining a difference function based on the first amplitude spectrum and the second amplitude spectrum, and determining the frequency of the oscillating movement of the wind turbine tower as a frequency corresponding to a peak in the difference function. Also provided is a device for determining a frequency of an oscillating movement.

Abstract: Provided is a method and a system for computer-implemented determination of a drag coefficient as a control variable for controlling of a wind turbine, by receiving, as a data stream, a set of data from a number of data sources, the set of data consisting, for each data source, of a plurality of time series data values, acquired within a given time period at given points in time, and estimating, by a processing unit, the control variable based on the set of data as input of a machine learning algorithm being trained with training data of simulation time series data containing a number of operating states at different wind conditions and respective number of drag coefficients.

Abstract: It is described a method of estimating additional power output for inertial response that will be available for output throughout a preset inertial response time interval, the method including: obtaining current values of at least a rotational speed of a wind turbine rotor and a power output of the wind turbine; deriving the additional power output based on the obtained current values and a remaining time interval of the preset inertial response time interval, in particular such that the additional power is available for output during the entire predetermined time interval.

Abstract: Multivariate graphs specific to a company's performance, alone or in relation to a benchmark, and methods for producing same include defining on a display screen an origin having a first value, extending from the origin at least three axes on the display screen, the axes being generally equidistant from each other and representing a respective variable, plotting on the display screen a value of each variable concerning the company as a point on a respective axis, and using the plotted points to interpolate first segments between the axes on the display screen. Benchmark information, extrinsic to the company, can be obtained, processed into a rating in the same manner as the company data, and superimposed for ready visual comparison of the company's performance to the obtained benchmark. The benchmark information, if shown, is distinguished from the company's performance graph.

Abstract: Multivariate graphs specific to a company's performance, alone or in relation to a benchmark, and methods for producing same include defining on a display screen an origin having a first value, extending from the origin at least three axes on the display screen, the axes being generally equidistant from each other and representing a respective variable, plotting on the display screen a value of each variable concerning the company as a point on a respective axis, and using the plotted points to interpolate first segments between the axes on the display screen. Benchmark information, extrinsic to the company, can be obtained, processed into a rating in the same manner as the company data, and superimposed for ready visual comparison of the company's performance to the obtained benchmark. The benchmark information, if shown, is distinguished from the company's performance graph.

Abstract: A zoom in/out interface to a ratings system provides navigation to users for inspection and interaction with prescribed indicators underlying an integrated rating of a company's performance. The interface presents at various different depths in a hierarchy of the prescribed indicators the multivariate relationships that exist among the indicators, expressed as variable values, as well as the basis for the underlying values of each indicator down to the source of the data.

Abstract: A method for a rating system identifies user-selected performance indicators associated with one or more properties. A rating is computed for each of the user-selected performance indicators and for each entity in an entity class by applying at least the user-selected performance indicators to a rating algorithm. The entity class is divided into at least three approximately equal numbers of entity. For each of the performance indicator rating, the method sorts the performance indicator relative to a respective performance indicator of the other entity in the entity class, maps the sorted results to one of the at least three divisions of the entity class, and identifies and presents a portion of the user-selected performance indicators that represent indicators that outperform or underperform the entity class.

Abstract: A computer implemented rating system for rating a company using at least one non-economic factor stored in a database populated with hierarchical data and metadata. The system displays at least a portion of the hierarchical data and a formula that generates a sustainability score, the sustainability score defining a rating of the company incorporating the at least one non-economic factor. The user can input at weightings into the system which associates each weighting with a respective non-economic factor. A processor computes the sustainability score using the formula by mathematically applying each associated user-input weighting to the respective non-economic factor. The system displays the sustainability score, and, in response to a user interaction, displays at least a portion of the hierarchical data including the metadata. The hierarchical data can include a second level of data which is used to compute the first level by applying weightings in a formula.

Abstract: A method for a rating system identifies user-selected performance indicators associated with one or more properties. A rating is computed for each of the user-selected performance indicators and for each entity in an entity class by applying at least the user-selected performance indicators to a rating algorithm. The entity class is divided into at least three approximately equal numbers of entity. For each of the performance indicator rating, the method sorts the performance indicator relative to a respective performance indicator of the other entity in the entity class, maps the sorted results to one of the at least three divisions of the entity class, and identifies and presents a portion of the user-selected performance indicators that represent indicators that outperform or underperform the entity class.

Abstract: A computer implemented rating system for rating a company using at least one non-economic factor stored in a database populated with hierarchical data and metadata. The system displays at least a portion of the hierarchical data and a formula that generates a sustainability score, the sustainability score defining a rating of the company incorporating the at least one non-economic factor. The user can input at weightings into the system which associates each weighting with a respective non-economic factor. A processor computes the sustainability score using the formula by mathematically applying each associated user-input weighting to the respective non-economic factor. The system displays the sustainability score, and, in response to a user interaction, displays at least a portion of the hierarchical data including the metadata. The hierarchical data can include a second level of data which is used to compute the first level by applying weightings in a formula.

Abstract: Computer-based rating of the sustainability of legal entities. Data is stored concerning at least non-economic factors of legal entities, and is used to compute sustainability scores for each entity's performance. Financial and economic criteria may also be stored and computed. Sustainability scores may be used to rate companies, governments, products and executives on a scale, with respect to each other, or within groups such as whole industries. In one embodiment, a subscriber is permitted to customize how scores are computed, to reflect subscriber preferences.

Abstract: Tiered-access to data from which integrated ratings on companies is derived to users at machines connected to a distributed computer network. All users are presented with a name of a particular company in association with a computed integrated rating through a first interface component. Only a subset of the users is permited to interact with prescribed indicators from which the integrated rating is derived. A rating system accessible through connections to the network executes on a host machine and includes the first interface component. A processor computes each integrated rating as a single rating value by application of a formula to prescribed indicators contained in a database. A second interface component permits only selected users to interact with the prescribed indicators. Optionally, a third interface component enables further specific interactions in response to any permission established by the second interface component.

Abstract: Multivariate graphs specific to a company's performance, alone or in relation to a benchmark, and methods for producing same include defining on a display screen an origin having a first value, extending from the origin at least three axes on the display screen, the axes being generally equidistant from each other and representing a respective variable, plotting on the display screen a value of each variable concerning the company as a point on a respective axis, and using the plotted points to interpolate first segments between the axes on the display screen. Benchmark information, extrinsic to the company, can be obtained, processed into a rating in the same manner as the company data, and superimposed for ready visual comparison of the company's performance to the obtained benchmark. The benchmark information, if shown, is distinguished from the company's performance graph.

Abstract: A zoom in/out interface to a ratings system provides navigation to users for inspection and interaction with prescribed indicators underlying an integrated rating of a company's performance. The interface presents at various different depths in a hierarchy of the prescribed indicators the multivariate relationships that exist among the indicators, expressed as variable values, as well as the basis for the underlying values of each indicator down to the source of the data.

Abstract: A system is disclosed for rating the sustainability of legal entities such as companies and governments. In a computer embodiment, data is stored concerning at least non-economic factors of legal entities, and is used to compute sustainability scores for them. Companies may enter data about themselves automatically. The data is used to compute one or more sustainability scores for an entity's performance with respect to its impact on people and/or the environment and to its own governance. A score for financial and economic criteria may also be computed. Individual sustainability scores may be derived for each of these criteria, or a single score may be computed from all of them. The sustainability scores may be used to rate companies, governments, products and even executives on a scale, or with respect to each other, or within groups such as whole industries. In one embodiment, a subscriber is permitted to customize how scores are computed, to reflect institutional preferences.