Patents by Inventor Andreas Kirchner
Andreas Kirchner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10294337Abstract: A process for preparing poly(lactide-co-glycolide) copolymer particles with an average particle size in the range of 50-800 nm includes transferring a mixture of poly(lactide-co-glycolide) copolymer, ethanol and carbon dioxide from a first reactor into a second reactor under rapid reduction of the pressure and expansion with phase separation into a gas phase, an ethanol aerosol and an ethanolic suspension containing poly(lactide-co-glycolide) copolymer particles, removing the carbon dioxide gas and the ethanol aerosol from the second reactor, and obtaining the poly(glycolide-co-lactide) copolymer particles in the form of an ethanolic suspension or in dry form from the second reactor.Type: GrantFiled: June 21, 2016Date of Patent: May 21, 2019Assignee: Evonik Röhm GmbHInventors: Andreas Kirchner, Rosario Lizio, Markus Rolf Rossmeissl, Wolfgang Luley, Johannes Vorholz, Silko Grimm, Marc Schneider
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Publication number: 20180201738Abstract: A process for preparing poly(lactide-co-glycolide) copolymer particles with an average particle size in the range of 50-800 nm includes transferring a mixture of poly(lactide-co-glycolide) copolymer, ethanol and carbon dioxide from a first reactor into a second reactor under rapid reduction of the pressure and expansion with phase separation into a gas phase, an ethanol aerosol and an ethanolic suspension containing poly(lactide-co-glycolide) copolymer particles, removing the carbon dioxide gas and the ethanol aerosol from the second reactor, and obtaining the poly(glycolide-co-lactide) copolymer particles in the form of an ethanolic suspension or in dry form from the second reactor.Type: ApplicationFiled: June 21, 2016Publication date: July 19, 2018Applicant: Evonik Roehm GmbHInventors: Andreas KIRCHNER, Rosario Lizio, Markus Rolf Rossmeissl, Wolfgang Luley, Johannes Vorholz, Silko Grimm, Marc Scheider
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Patent number: 9466984Abstract: Certain embodiments of the invention may include systems and methods for controlling power ramp rates in renewable variable power generation systems. According to an exemplary embodiment of the invention, a method is provided for limiting power ramp rates. The method can include regulating collective power output of a plurality of variable energy sources by monitoring collective power output of the plurality of variable energy sources, and controlling collective power output of the plurality of variable energy sources with the plurality of power control signals.Type: GrantFiled: October 26, 2009Date of Patent: October 11, 2016Assignee: General Electric CompanyInventors: Mark Edward Cardinal, Jignesh Govindlal Gandhi, Andreas Kirchner
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Patent number: 9046077Abstract: A reactive power controller for controlling reactive power in a wind farm grid connected to a utility grid and including at least two sub-grids and a collector portion is provided. At least one wind turbine is connected to each sub-grid, wherein the at least two sub-grids are connected to the collector portion and wherein the collector portion establishes the connection to the utility grid. The reactive power controller includes a device for determining an actual reactive power value at the collector portion, and a wind farm controller operatively connected to the device for controlling at least one of said wind turbines on basis of the determined actual reactive power value such that a desired reactive power value is attained.Type: GrantFiled: December 28, 2011Date of Patent: June 2, 2015Assignee: General Electric CompanyInventors: Andreas Kirchner, Enno Ubben, Thomas Braam
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Patent number: 8744635Abstract: A control system for an energy production facility includes a plant controller for receiving an indication of a measured power output of the energy production facility that includes power generators and produces output signals. The system also includes a processing unit operably coupled to the plant controller and responsive to executable computer instructions when executed on the processing unit cause the plant controller to: create an output signal that causes an energy storage device to discharge in the event power reserves of the power generators can not met the requested ramp down rate; and create an output signal that causes the energy storage device to charge up in the event that the power capability of the power generators can meet the requested ramp down rate.Type: GrantFiled: January 31, 2011Date of Patent: June 3, 2014Assignee: General Electric CompanyInventors: Andreas Kirchner, Enno Ubben
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Patent number: 8664800Abstract: Power inverters are controlled in response to reactive power support commands received from a power grid such that at least one power inverter provides reactive power to the power grid. The reactive power provided is based on each power inverter's reactive power capacity only while the total power capacity of each power inverter providing the reactive power is not exhausted in generating real power.Type: GrantFiled: August 31, 2010Date of Patent: March 4, 2014Assignee: General Electric CompanyInventors: Anthony William Galbraith, Owen Jannis Schelenz, Mark Edward Cardinal, Andreas Kirchner, Nicholas Wright Miller, Kara Clark
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Patent number: 8610306Abstract: A control system for a power plant is provided, configured to influence actual HV characteristics of an HV power line at a point-of-interconnection to a grid. The control system includes an MV-compliant measurement system configured for connection with an MV power line of the power plant, and an evaluation unit. The evaluation unit is connected to the MV-compliant measurement system and is configured to determine calculated HV characteristics of the HV power line based on measurement values received from the MV-compliant measurement system at the MV power line and based on a model of a transformer. The transformer transforms from medium voltage on the MV power line to high voltage on the HV power line. The evaluation unit is configured to generate a control signal based on the calculated HV characteristics in order to control the power plant for influencing the actual HV characteristics of the HV power line.Type: GrantFiled: July 29, 2011Date of Patent: December 17, 2013Assignee: General Electric CompanyInventor: Andreas Kirchner
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Patent number: 8427118Abstract: Certain embodiments of the invention may include systems and methods for regulating power in renewable energy sources. According to an exemplary embodiment of the invention, a method is provided for regulating active power produced by the renewable energy source towards an apparent power setpoint. The method may include selectively regulating voltage based on power factor foldback or voltage foldback associated with the renewable energy source. When power factor foldback is selected, the method may include regulating the power factor associated with the renewable energy source based at least in part on a power factor angle magnitude setpoint, and reducing the power factor angle magnitude setpoint towards zero when apparent power produced by the renewable energy source approaches or exceeds the apparent power setpoint.Type: GrantFiled: October 26, 2009Date of Patent: April 23, 2013Assignee: General Electric CompanyInventors: Mark Edward Cardinal, Jignesh Govindlal Gandhi, Andreas Kirchner
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Patent number: 8258746Abstract: A charger adapted for charging at least one energy storage device to be charged by means of an electrical charging power provided by an electrical power supply grid is provided. The charger includes a grid parameter detector unit adapted for detecting at least one electrical grid parameter of the electrical power supply grid and for outputting a grid parameter detection signal on the basis of the at least one detected electrical grid parameter. A control unit receives the grid parameter detection signal and determines a control signal, wherein a charging power adjustment unit adjusts the electrical charging power on the basis of the control signal.Type: GrantFiled: December 19, 2008Date of Patent: September 4, 2012Assignee: General Electric CompanyInventor: Andreas Kirchner
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Publication number: 20120136494Abstract: A method of controlling a wind farm is provided. The method includes providing a wind farm grid connected to a utility grid and including at least two sub-grids and a collector portion, wherein at least one wind turbine is connected to each sub-grid, wherein the at least two sub-grids are connected to the collector portion and wherein the collector portion establishes the connection to the utility grid. Electrical power is generated with at least one of said wind turbines and fed to the sub-grid to which the at least one wind turbine is connected. Then an actual reactive power value at the collector portion is determined and at least one of said wind turbines is controlled on basis of the determined actual reactive power value such that a desired reactive power value is attained.Type: ApplicationFiled: December 21, 2011Publication date: May 31, 2012Inventors: Andreas KIRCHNER, Enno Ubben, Thomas Braam
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Patent number: 8185249Abstract: A control system for an energy production facility includes a plant controller for receiving an indication of a measured power output of the energy production facility that includes power generators and produces output signals. The system also includes a processing unit operably coupled to the plant controller and responsive to executable computer instructions when executed on the processing unit cause the plant controller to: create an output signal that causes an energy storage device to discharge in the event power reserves of the power generators can not met the requested ramp down rate; and create an output signal that causes the energy storage device to charge up in the event that the power capability of the power generators can meet the requested ramp down rate.Type: GrantFiled: January 31, 2011Date of Patent: May 22, 2012Assignee: General Electric CompanyInventors: Andreas Kirchner, Enno Ubben
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Patent number: 8175755Abstract: Systems and methods for monitoring power devices that are connecting in a loop to a main power line are provided. A plurality of power devices that are connected in a loop to a power grid line may be provided. The loop may include a plurality of power lines. A disturbance within the plurality of power devices may be identified, and an impact of the identified disturbance on the plurality of power lines may be determined. A power output of one or more of the plurality of power devices may be adjusted based at least in part on the determined impact.Type: GrantFiled: November 18, 2009Date of Patent: May 8, 2012Assignee: General Electric CompanyInventors: Andreas Kirchner, Enno Ubben
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Publication number: 20120101643Abstract: A reactive power controller for controlling reactive power in a wind farm grid connected to a utility grid and including at least two sub-grids and a collector portion is provided. At least one wind turbine is connected to each sub-grid, wherein the at least two sub-grids are connected to the collector portion and wherein the collector portion establishes the connection to the utility grid. The reactive power controller includes a device for determining an actual reactive power value at the collector portion, and a wind farm controller operatively connected to the device for controlling at least one of said wind turbines on basis of the determined actual reactive power value such that a desired reactive power value is attained.Type: ApplicationFiled: December 28, 2011Publication date: April 26, 2012Inventors: Andreas Kirchner, Enno Ubben, Thomas Braam
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Publication number: 20120061964Abstract: A control system for a power plant is provided, configured to influence actual HV characteristics of an HV power line at a point-of-interconnection to a grid. The control system includes an MV-compliant measurement system configured for connection with an MV power line of the power plant, and an evaluation unit. The evaluation unit is connected to the MV-compliant measurement system and is configured to determine calculated HV characteristics of the HV power line based on measurement values received from the MV-compliant measurement system at the MV power line and based on a model of a transformer. The transformer transforms from medium voltage on the MV power line to high voltage on the HV power line. The evaluation unit is configured to generate a control signal based on the calculated HV characteristics in order to control the power plant for influencing the actual HV characteristics of the HV power line.Type: ApplicationFiled: July 29, 2011Publication date: March 15, 2012Inventor: Andreas KIRCHNER
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Publication number: 20120049636Abstract: Power inverters are controlled in response to reactive power support commands received from a power grid such that at least one power inverter provides reactive power to the power grid. The reactive power provided is based on each power inverter's reactive power capacity only while the total power capacity of each power inverter providing the reactive power is not exhausted in generating real power.Type: ApplicationFiled: August 31, 2010Publication date: March 1, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Anthony William Galbraith, Owen Jannis Schelenz, Mark Edward Cardinal, Andreas Kirchner, Nicholas Wright Miller, Kara Clark
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Patent number: 8058740Abstract: A wind turbine having a nacelle, includes a Global Positioning System (“GPS”) sensor for determining a rotational displacement of the nacelle of the wind turbine.Type: GrantFiled: December 10, 2009Date of Patent: November 15, 2011Assignee: General Electric CompanyInventors: Markus Altenschulte, Andreas Kirchner
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Patent number: 8018082Abstract: A power system for a wind turbine having a measurement device configured to detect an overfrequency condition within an electrical system and a controller communicatively coupled to the measurement device. The controller is configured to switch the wind turbine between a power generation mode and a power consumption mode based on an existence of a detected overfrequency condition.Type: GrantFiled: November 25, 2009Date of Patent: September 13, 2011Assignee: General Electric CompanyInventors: Hartmut Scholte-Wassink, Andreas Kirchner, Enno Ubben
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Publication number: 20110156391Abstract: A control system for an energy production facility includes a plant controller for receiving an indication of a measured power output of the energy production facility that includes power generators and produces output signals. The system also includes a processing unit operably coupled to the plant controller and responsive to executable computer instructions when executed on the processing unit cause the plant controller to: create an output signal that causes an energy storage device to discharge in the event power reserves of the power generators can not met the requested ramp down rate; and create an output signal that causes the energy storage device to charge up in the event that the power capability of the power generators can meet the requested ramp down rate.Type: ApplicationFiled: January 31, 2011Publication date: June 30, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Andreas Kirchner, Enno Ubben
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Publication number: 20110133455Abstract: A wind turbine having a nacelle, includes a Global Positioning System (“GPS”) sensor for determining a rotational displacement of the nacelle of the wind turbine.Type: ApplicationFiled: December 10, 2009Publication date: June 9, 2011Inventors: Markus Altenschulte, Andreas Kirchner
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Patent number: D726839Type: GrantFiled: February 6, 2014Date of Patent: April 14, 2015Inventor: Andrea Kirchner Carrier