Patents by Inventor Chunchun Xu
Chunchun Xu 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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Publication number: 20160230743Abstract: A wind turbine system is provided. In various embodiments, the system includes a nacelle supported by a tower. At least one rotor blade is rotatably connected with the nacelle to capture wind energy. The at least one rotor blade rotates relative to the nacelle for generating electricity. A generator is coupled to the nacelle for converting the wind energy into electrical energy. A transformer-converter assembly comprises a converter and a transformer such that the converter is integrally connected to the transformer. An electrical and control module is electronically coupled to the generator and the transformer-converter assembly.Type: ApplicationFiled: February 10, 2015Publication date: August 11, 2016Inventors: Allen Michael RITTER, John Leo BOLLENBECKER, Mark Edward CARDINAL, John Noel CUNNINGHAM, Anthony Michael KLODOWSKI, Kuruvilla Pallathusseril KURUVILLA, Robert Gregory WAGONER, Chunchun XU
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Patent number: 9065377Abstract: A load commutated inverter (LCI) drive system for a synchronous electrical machine is provided. The system may include a first supply bridge and a second supply bridge, each of which may include an alternating current to direct current (AC-to-DC) source side converter, a DC link circuit, and a DC-to-AC load side inverter. The system may include a controller for selectively controlling at least one of the first supply bridge and the second supply bridge by selective firings of silicon controlled rectifiers (SCRs). The electrical power outputted from the first supply bridge and the second supply bridge may be combined by an output delta-wye electric power transformer and supplied to the electrical machine. The LCI drive system may further include one or more input electric power transformers configured to supply an input electric power to the first supply bridge and the second supply bridge.Type: GrantFiled: March 15, 2013Date of Patent: June 23, 2015Assignee: General Electric CompanyInventors: Chunchun Xu, Allen Michael Ritter, Cyrus David Harbourt, Luis Jose Garces, Cheng Luo
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Publication number: 20140265972Abstract: A load commutated inverter (LCI) drive system for a synchronous electrical machine is provided. The system may include a first supply bridge and a second supply bridge, each of which may include an alternating current to direct current (AC-to-DC) source side converter, a DC link circuit, and a DC-to-AC load side inverter. The system may include a controller for selectively controlling at least one of the first supply bridge and the second supply bridge by selective firings of SCRs. The electrical power outputted from the first supply bridge and the second supply bridge may be combined by an output delta-wye electric power transformer and supplied to the electrical machine. The LCI drive system may further include one or more input electric power transformers configured to supply an input electric power to the first supply bridge and the second supply bridge.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Chunchun Xu, Allen Michael Ritter, Cyrus David Harbourt, Luis Jose Garces, Cheng Luo
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Publication number: 20130301327Abstract: In one aspect, a method of converting power is described. One embodiment of the method comprises receiving direct current (DC) power; channeling the DC power through an inverter including a first bridge and a second bridge, wherein each of the first bridge and the second bridge includes at least one switch; controlling the at least one switch of the first bridge and the at least one switch of the second bridge to convert the DC power to alternating current (AC) power; and, channeling the AC power through an inductor that includes a first winding and a second winding, wherein the first winding is coupled to an output of the first bridge and the second winding is coupled to an output of the second bridge and wherein the inductor is configured to have a first magnetic path for common mode inductance and a second magnetic path for differential mode inductance.Type: ApplicationFiled: May 14, 2012Publication date: November 14, 2013Inventors: Robert Gregory Wagoner, Scott Charles Frame, Chunchun Xu, Huibin Zhu
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Publication number: 20130271055Abstract: A device includes a controller that receives current values generated by at least four parallel load commutated inverters (LCIs). The controller includes a source firing generator that generates independent source firing commands for each of the at least four parallel LCIs based on the received current values and transmits each of the independent source firing commands to a respective one of the at least four parallel LCIs, wherein the source firing commands are configured to set input phase angle values of the four parallel LCIs.Type: ApplicationFiled: April 15, 2012Publication date: October 17, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Chunchun Xu, Cheng Luo, Allen Michael Ritter, Cyrus David Harbourt, Pedro Monclova
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Publication number: 20130107587Abstract: Photovoltaic (PV) array emulators and methods are described. In one example, a method for use in testing a PV inverter includes coupling a first PV inverter to an alternating current (AC) power source. A second PV inverter is coupled to receive an output of the first PV inverter. The first PV inverter is operated to emulate a PV array and provide a DC power output to the second PV inverter.Type: ApplicationFiled: November 1, 2011Publication date: May 2, 2013Inventors: Chunchun Xu, David Smith, Luis Jose Garcés
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Patent number: 8310214Abstract: A control system for controlling a multiphase power converter includes a current control module, a voltage control module and a current command selector. The current control module generates grid voltage command signals for the multiphase power converter and the voltage control module generates reference converter current command signals for the current control module. The current command selector supplies active and reactive current command signals from a supervisory controller to the current control module when the multiphase power converter is connected to the grid and supplies the reference converter current command signals to the current control module when the multiphase power converter is unconnected to the grid.Type: GrantFiled: June 28, 2010Date of Patent: November 13, 2012Assignee: General Electric CompanyInventors: Luis José Garcés Rivera, Ruediger Soeren Kusch, Chunchun Xu
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Publication number: 20110317460Abstract: A control system for controlling a multiphase power converter includes a current control module, a voltage control module and a current command selector. The current control module generates grid voltage command signals for the multiphase power converter and the voltage control module generates reference converter current command signals for the current control module. The current command selector supplies active and reactive current command signals from a supervisory controller to the current control module when the multiphase power converter is connected to the grid and supplies the reference converter current command signals to the current control module when the multiphase power converter is unconnected to the grid.Type: ApplicationFiled: June 28, 2010Publication date: December 29, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Luis José Garcés Rivera, Ruediger Soeren Kusch, Chunchun Xu
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Publication number: 20100049486Abstract: Embodiments of methods and systems of a system for simulating a plant are provided. According to one exemplary embodiment of the invention, there is disclosed a system for simulating a plant. The system may include a controller including plant operation logic for executing control commands to the plant. The system may further include a simulator in communication with the controller, where the simulator may consist of high bandwidth hardware having at least one high bandwidth model of at least a first plant behavior. The simulator may also consist of at least one processor with at least one low bandwidth model of at least a second plant behavior.Type: ApplicationFiled: August 22, 2008Publication date: February 25, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Chunchun Xu, Allen Michael Ritter, David Smith, Luis Jose Garces, Robert Allen Seymour, Mark Eugene Shepard, James Michael Nowak, Bruce Allen Gerritsen, Paul Michael Szczesny