Patent application number | Description | Published |
20100320763 | METHOD FOR DETERMINING A ROTOR POSITION OF AN ELECTRICAL GENERATOR IN A WIND TURBINE - A method for determining a rotor position of an electrical generator in a wind turbine is described comprising determining a voltage of the electrical generator, determining a rotor position angle estimate based on the voltage of the electrical generator, determining a subsequent rotor position angle estimate through a feedback loop, based on a combination of the voltage of the electrical generator and the rotor position angle estimate. Further, a method to real time track encoder health is described comprising determining the phase angle of a reference voltage, determining the angle difference between the rotor position and the reference voltage, and determining the differentiation of the angle difference. | 12-23-2010 |
20100327585 | Control System for an Electrical Generator and Method for Controlling an Electrical Generator - A method for validating and initializing a control system for an electrical generator connected to a power converter in a wind turbine. The method may include generating a first parameter value representing control signal for controlling the stator flux of a stator of the electrical generator, measuring a second parameter value specifying an electrical operational characteristic of the electrical generator, and determining an accuracy level of the control signal based on the first parameter value and the second parameter value, wherein the accuracy level of the control signal has to fall within a predefined threshold for the control system to be validated. | 12-30-2010 |
20110109279 | METHOD FOR DETERMINING A ROTOR POSITION OF AN ELECTRICAL GENERATOR IN A WIND TURBINE - A method for determining a rotor position of an electrical generator in a wind turbine is described comprising determining a voltage of the electrical generator, determining a rotor position angle estimate based on the voltage of the electrical generator, determining a subsequent rotor position angle estimate through a feedback loop, based on a combination of the voltage of the electrical generator and the rotor position angle estimate. Further, a method to real time track encoder health is described comprising determining the phase angle of a reference voltage, determining the angle difference between the rotor position and the reference voltage, and determining the differentiation of the angle difference. | 05-12-2011 |
20120022714 | WIND TURBINE WITH A CONTROLLER CONFIGURED TO MANAGE RESONANT EFFECTS - A method and apparatus of operating a controller usable for operating a wind turbine is provided. The wind turbine includes a voltage converter being connectable to a power grid via a filter arrangement. The method includes determining a line voltage and adding the determined line voltage to the output of the voltage converter with a time delay. The time delay is adjusted such that resonant effects occurring at the filter arrangement are decreased. | 01-26-2012 |
20120155125 | WIND TURBINE GENERATOR - A wind turbine generator comprising: an electrical generator configured to generate AC signals, a plurality of power converters operated by a gating signal, each power converter configured to convert the AC signals from electrical generator into fixed frequency AC signals, a transducer configured to measure the combined output from the power converters, and a controller configured to phase-displace the gating signal of one of the power converters to substantially minimise harmonic components of the combined output. | 06-21-2012 |
20130187384 | METHOD OF OPERATING A WIND TURBINE, WIND TURBINE, WIND TURBINE CONTROLLING SYSTEM, AND PROCESSING SYSTEM - According to an embodiment, a method of operating a wind turbine comprising a DC-to-AC voltage converter is provided, the wind turbine being connectable to a grid via the DC-to-AC voltage converter, the method comprising: determining a line voltage of a power line connecting the DC-to-AC voltage converter to the grid; if the determined line voltage exceeds a predefined voltage threshold value, injecting reactive current into the power line, wherein the amount of reactive current injected is chosen such that an output voltage of the DC-to-AC voltage converter is kept within a predetermined voltage range. | 07-25-2013 |
Patent application number | Description | Published |
20100017811 | Method and system for comprehensive socket application programming interface loopback processing - Methods and systems for comprehensive socket API loopback processing on a computing device. In an exemplary method and system, a socket API processes loopback calls without resort to a TCP/IP protocol stock or lower level systems (e.g. network drivers), reducing overhead requirements and processing burdens imposed on the TCP/IP stack and lower level systems and improving overall computing device performance. | 01-21-2010 |
20100050189 | Method and system for socket API call emulation - A method and system for socket API call emulation facilitates communication between an application and non-networked I/O devices. The present invention intercepts and modifies IP-aware socket API calls en route from the application to non-networked I/O devices so that such calls are received by non-networked I/O devices as IP-unaware I/O access calls. The invention allows the application to use socket API calls to communicate with all entity types and thereby relieves an application developer of the burden to write and debug/edit separate code and documentation for non-networked I/O device types with which an application is expected to communicate. Socket API call emulation is in some embodiments performed by an emulation module within a socket API operatively coupled between an application and a device driver associated with a non-networked I/O device. | 02-25-2010 |
20110252117 | Devices and Methods for Redirecting a Browser to Access Computer Resource Behind a Network Firewall - Webpage-based redirection, from an application of a device external to a local device behind a network firewall, is accomplished via Hypertext Markup Language Protocol (HTTP) to invoke local instructions, e.g., script, to computer resources at the local device, such as computer resources at a multifunction peripheral (MFP) device behind the network firewall. HTTP-based communication of the results of execution of the invoked local instruction is made to the external application. | 10-13-2011 |
20120030746 | Devices and Methods for Using HTTP Encapsulation to Access Web Resources - Embodiments provide a method of a system accessing web resources using HTTP encapsulation, by for example, a method that may include the steps of: (a) receiving, by an HTTP-encapsulator server component, HTTP request data from a web client; (b) saving, by the HTTP-encapsulator server, the HTTP request data; (c) creating, by the HTTP-encapsulator server, a first web resource accessible through an endpoint Uniform Resource Locator (URL); (d) creating, by the HTTP-encapsulator server, a second web resource containing data, wherein the data comprises: a URL to access the first web resource; and an endpoint URL pointing to a file handler on the HTTP-encapsulator server; (e) fetching, by an HTTP-encapsulator client of a local computing device, a command data of the HTTP-encapsulator server; (f) receiving, by the HTTP-encapsulator client, the command data of the HTTP-encapsulator server comprising a retrieval instruction to a data file stored at the local computing device as a destination page; (g) and generating, by the HTTP-encapsulator client, a response to the request of the HTTP-encapsulator server, based on a protected network resource; and (h) sending the generated response to the URL endpoint of the HTTP-encapsulator server hosted at the source external to the HTTP-encapsulator client of the local computing device. | 02-02-2012 |
20120188584 | Document imaging node with internal web server execution environment - An imaging node hosts a web server execution environment that exports document imaging services using server-side scripting. The web server execution environment receives Hypertext Transfer Protocol (HTTP) requests from a web browser and runs server-side scripts that resolve HTTP requests to native imaging services. A native imaging execution environment then executes the resolved native imaging services. Moreover, the web server execution environment can run server-side scripts that resolve HTTP requests to non-native imaging services and invoke the resolved non-native imaging services remotely as required. | 07-26-2012 |
20130013665 | Sandboxed Daemon Process Invocation through HTTP - Methods and devices for initiating, by a client, a set of one or more applications, wherein each initiated application is associated with an Uniform Resource Locator (URL), and wherein the initiating is based on a Hypertext Transfer Protocol (HTTP) request to a computer host having a server. The methods and devices further executing an application from the set of one or more applications, based on a rule set, in a processing environment limiting the functionality of the initiated application, and wherein the application is executed in the background of an operating system of the server based on the rule set. | 01-10-2013 |
20130111009 | Method and System for Indirectly Establishing a Unique Communication Channel Between a Plurality of Devices | 05-02-2013 |