Patents by Inventor Pengju Kang
Pengju Kang 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: 20160344329Abstract: An exemplary motor driving system includes a power source, a driving circuit, a controller, a motor, and a protection circuit. The driving circuit including at least one switching device coupled with the power source. The motor includes a plurality of windings. The motor is coupled with the driving circuit and driven by the driving circuit. The controller is configured to provide first switch signals to the at least one switching device of the driving circuit in a normal mode. The protection circuit is coupled with the controller, and configured to generate second switch signals based at least in part on a fault signal in a fault mode and provide the second switch signals to the at least one switching device of the driving circuit so as to reconstruct circuit loops between the driving circuit and the plurality of windings. A method for operating the motor driving system is also described.Type: ApplicationFiled: August 3, 2016Publication date: November 24, 2016Applicant: General Electric CompanyInventors: Fei Xu, Xu Chu, Pengju Kang, Heng Wu, Baoming Huang
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Publication number: 20160294182Abstract: A multi-source energy storage system, it includes a first energy storage system, a second energy storage system, and a second DC/DC converter and controller and a method for supplying power to an electrical load from multiple energy storage systems. The first energy storage system can be coupled to an electrical load. The second DC/DC converter and controller can be coupled between at least one of the following: a second energy storage system and a first energy storage system or electrical load. The controller settings control the first and second energy storage systems and the second DC/DC converter runs in both precharge mode and normal mode. In the precharge mode, the first energy storage system charges the second energy storage system via the second DC/DC converter. In normal mode, the second energy storage is coupled to the electrical load via the second DC/DC converter.Type: ApplicationFiled: March 31, 2016Publication date: October 6, 2016Inventors: Fei LI, Pengcheng ZHU, Pengju KANG
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Patent number: 9438144Abstract: An exemplary motor driving system includes a power source, a driving circuit, a controller, a motor, and a protection circuit. The driving circuit including at least one switching device coupled with the power source. The motor includes a plurality of windings. The motor is coupled with the driving circuit and driven by the driving circuit. The controller is configured to provide first switch signals to the at least one switching device of the driving circuit in a normal mode. The protection circuit is coupled with the controller, and configured to generate second switch signals based at least in part on a fault signal in a fault mode and provide the second switch signals to the at least one switching device of the driving circuit so as to reconstruct circuit loops between the driving circuit and the plurality of windings. A method for operating the motor driving system is also described.Type: GrantFiled: March 12, 2014Date of Patent: September 6, 2016Assignee: GENERAL ELECTRIC COMPANYInventors: Fei Xu, Xu Chu, Pengju Kang, Heng Wu, Baoming Huang
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Publication number: 20150120130Abstract: A system includes a contactor system, a vehicle control unit, and a fault diagnostic system. The contactor system includes one or more contactors. The vehicle control unit is coupled to the contactor system via a first connection and a second connection. The vehicle control unit is configured to provide a controlling signal to the contactor system through at least one of the first connection and the second connection to control the one or more contactors. The fault diagnostic system is configured to identify faults occurring in the first connection and the second connection. A method is also provided.Type: ApplicationFiled: October 15, 2014Publication date: April 30, 2015Inventors: Ronghui ZHOU, Jian ZHOU, Fei LI, Xi LU, Fengcheng SUN, Xiangming SHEN, Hai QIU, Pengju KANG
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Patent number: 8963460Abstract: A method for controlling a motor is provided. The method comprises obtaining electrical signals of the motor with a signal unit, the electrical signals comprising a motor torque and an angular velocity, calculating a voltage phase angle of a voltage vector with a calculating component, wherein a command torque, the motor torque, the angular velocity and a voltage amplitude of the voltage vector are inputs of the calculating component, and wherein the voltage phase angle is a variable and the voltage amplitude is a constant. The method further comprises modulating the voltage phase angle and the voltage amplitude to a switching signal for controlling an inverter; converting a direct current voltage to the voltage vector according to the switching signal, and applying the voltage vector to the motor.Type: GrantFiled: November 9, 2012Date of Patent: February 24, 2015Assignee: General Electric CompanyInventors: Yong Li, Pengju Kang, Ronghui Zhou, Xiangming Shen, Xiao Chen, Zili Cai, Tong Zhao
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Patent number: 8964029Abstract: The present invention describes a system and method for surveillance cameras that maintain proper mapping of a mapped region of interest with an imaged region of interest based on feedback received regarding the current orientation of a surveillance camera. The system or method first determines the location of the imaged region of interest within the surveillance camera's imaged current field of view based on mechanical or imaged feedback, or a combination of both. The system or method then remaps the mapped region of interest within the surveillance camera's imaged current field of view such that the mapped region of interest is coextensive with the imaged region of interest.Type: GrantFiled: April 29, 2005Date of Patent: February 24, 2015Assignee: Chubb Protection CorporationInventors: Alan M. Finn, Pengju Kang, Ziyou Xiong, Lin Lin, Pei-Yuan Peng, Meghna Misra, Christian Maria Netter
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Publication number: 20140346891Abstract: A direct current (DC) circuit breaker for power transmission or distribution system includes a current sensor for sensing current of a system, a controller, a physical switch, and multiple switch modules. The multiple switch modules are electrically coupled to the current sensor and the physical switch in series. Each switch module includes multiple base elements electrically coupled in parallel. Each base element includes a first silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET) and a second SiC MOSFET electrically coupled in an opposite series connection mode. The first and second SiC MOSFETs are configured in a synchronous rectification mode by channel reverse conduction control. The controller controls the multiple switch modules to connect current in the system, and break current of the multiple switch modules according to sensed current signals from the current sensor.Type: ApplicationFiled: May 21, 2014Publication date: November 27, 2014Applicant: GE ENERGY POWER CONVERSION TECHNOLOGY LIMITEDInventors: Pengju Kang, Saijun Mao, Fei Xu, Wenqiang Yang, Yingqi Zhang, Pengcheng Zhu
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Publication number: 20140277884Abstract: A drive system includes a control unit and a traction device. The control unit is configured to receive a load variation signal indicating a vehicle load is to be or being changed and generate a traction torque in response to the load variation signal. The traction device is coupled to the control unit and configured to drive a vehicle according to the traction torque.Type: ApplicationFiled: March 10, 2014Publication date: September 18, 2014Applicant: General Electric CompanyInventors: Ronghui Zhou, Jian Zhou, Fengcheng Sun, Pengju Kang, Hai Qiu, Fei Li, Xiangming Shen, Xi Lu
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Publication number: 20140265942Abstract: An apparatus includes at least one energy source and a drive system coupled to the at least one energy source. The drive system converts electrical power received from the at least one energy source and provides converted electrical power for driving at least one load. The drive system includes a first converter, a second converter, and a first switch module coupled to outputs of the first and second converters. When the apparatus is operating under a first mode, the first switch module is switched to assume a first state to allow a first output electrical power provided from the first converter and a second output electrical power provided from the second converter to be combined for driving a first load with the combined output electrical power.Type: ApplicationFiled: March 10, 2014Publication date: September 18, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Fei Li, Xi Lu, Jian ZHOU, Pengju KANG, Ronghui ZHOU, Xiangming SHEN, Fengcheng SUN, Hai QIU
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Publication number: 20140265979Abstract: An exemplary motor driving system includes a power source, a driving circuit, a controller, a motor, and a protection circuit. The driving circuit including at least one switching device coupled with the power source. The motor includes a plurality of windings. The motor is coupled with the driving circuit and driven by the driving circuit. The controller is configured to provide first switch signals to the at least one switching device of the driving circuit in a normal mode. The protection circuit is coupled with the controller, and configured to generate second switch signals based at least in part on a fault signal in a fault mode and provide the second switch signals to the at least one switching device of the driving circuit so as to reconstruct circuit loops between the driving circuit and the plurality of windings. A method for operating the motor driving system is also described.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Fei Xu, Xu Chu, Pengju KANG, Heng Wu, Baoming HUANG
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Publication number: 20140152225Abstract: An electric drive system includes an energy storage system (ESS), a power conversion system, and an alternating current (AC) traction system. The ESS provides or receives electric power. The ESS includes a first energy storage unit and a second energy storage unit. The power conversion system is electrically coupled to the ESS for converting an input power to an output power. The AC traction system is electrically coupled to the power conversion system for converting the output power of the power conversion system to mechanical torques. The AC traction system includes a first AC drive device and a second AC drive device. An energy management system (EMS) is in electrical communication with the ESS, the AC traction system, and the power conversion system for providing control signals.Type: ApplicationFiled: December 2, 2013Publication date: June 5, 2014Applicant: General Electric CompanyInventors: Jian Zhou, Fei Xu, Dong Liu, Hai Qiu, Pengju Kang
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Publication number: 20140084679Abstract: An apparatus comprising an onboard energy storage device, an onboard power conversion device configured to be electrically coupled to an external power source for receiving electrical power therefrom, and at least one drive system electrically coupled to the onboard energy storage device and the onboard power conversion device, wherein the onboard energy storage device and the onboard power conversion device cooperatively provide electrical power for the at least one drive system. A vehicle and a method for managing power supply are also disclosed.Type: ApplicationFiled: September 17, 2013Publication date: March 27, 2014Applicant: General Electric CompanyInventors: Fei Li, Xi Lu, Jian Zhou, Pengju Kang, Ronghui Zhou, Xiangming Shen, Fengcheng Sun, Hai Qiu
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Publication number: 20130249315Abstract: A switching component comprising a number of switch sets in parallel is disclosed herein. Each switch set comprises a number of power switches and a backup power switch in series. The backup power switch has a default position of closed. Rated powers of the power switches and the backup power switch are less than a rated power of the switching component, and the switching component is modular. A switch system comprising the switching component is also described herein.Type: ApplicationFiled: March 6, 2013Publication date: September 26, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Ronghui Zhou, Fei Xu, Pengju Kang, Tong Zhao, Fei Li, Yong Li, Xiangming Shen
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Patent number: 8333265Abstract: A device (22) manages power source variations in an elevator system. The device includes a transformer (60) having a primary (62) and a secondary (64). An input of the elevator system is connected to the secondary (64). Tap switches (66a, 66b, 66c, 66d) are connected to the transformer (60) such that each tap switch is connected to a tap point (68a, 68b, 68c, 68d) on the transformer (60). A controller (54) operates the tap switches (66a, 66b, 66c, 66d) based on a sensed power source output to provide power on the secondary (64) within a tolerance band of the elevator system.Type: GrantFiled: August 31, 2006Date of Patent: December 18, 2012Assignee: Otis Elevator CompanyInventors: Pengju Kang, Mauro J. Atalla, Daryl J. Marvin, Vladimir Blasko, Robert K. Thornton, Stella M. Oggianu
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Patent number: 8271151Abstract: A flight control system and method includes a control loop control law to bias the collective stick toward a trim reference position with a motor and generate a force gradient with a clutch.Type: GrantFiled: March 31, 2008Date of Patent: September 18, 2012Assignee: Sikorsky Aircraft CorporationInventors: Muhammad Emadul Hasan, Donald W. Fowler, Pengju Kang
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Publication number: 20120072056Abstract: A flight control system and method includes a control loop control law to bias the collective stick toward a trim reference position with a motor and generate a force gradient with a clutch.Type: ApplicationFiled: March 31, 2008Publication date: March 22, 2012Inventors: Muhammad Emadul Hasan, Donald W. Fowler, Pengju Kang
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Patent number: 8020672Abstract: An elevator control system (24) provides elevator dispatch and door control based on passenger data received from a video monitoring system. The video monitoring system includes a video processor (16) connected to receive video input from at least one video camera (12). The video processor (16) tracks objects located within the field of view of the video camera, and calculates passenger data parameters associated with each tracked object. The elevator controller (24) provides elevator dispatch (26), door control (28), and security functions (30) based in part on passenger data provided by the video processor (16). The security functions may also be based in part on data from access control systems (14).Type: GrantFiled: January 12, 2006Date of Patent: September 20, 2011Assignee: Otis Elevator CompanyInventors: Lin Lin, Ziyou Xiong, Alan Matthew Finn, Pei-Yuan Peng, Pengju Kang, Mauro J. Atalla, Meghna Misra, Christian Maria Netter
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Patent number: 7952474Abstract: An alarm filter (22) for use in a security system (14) to reduce the occurrence of nuisance alarms receives sensor signals (S1-Sn, Sv) from a plurality of sensors (18, 20) included in the security system (14). The alarm filter (22) produces an opinion output as a function of the sensor signals and selectively modifies the sensor signals as a function of the opinion output to produce verified sensor signals (S1?-Sn?).Type: GrantFiled: March 15, 2005Date of Patent: May 31, 2011Assignee: Chubb Protection CorporationInventors: Pengju Kang, Alan M. Finn, Robert N. Tomastik, Thomas M. Gillis, Ziyou Xiong, Lin Lin, Pei-Yuan Peng
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Publication number: 20110001812Abstract: An alarm system (20) computes a situation context output (30) as a function of information received from sensors (24a-24n). The alarm system (20) extracts contextual information (la-ln) related to situation (22) of environment (18) and aggregates contextual information (la-ln) using context aggregation (34) to produce situation context output (30).Type: ApplicationFiled: March 15, 2005Publication date: January 6, 2011Applicant: Chub International Holdings LimitedInventors: Pengju Kang, Alan M. Finn, Thomas M. Gillis, Ollencio D'souza
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Publication number: 20100116595Abstract: A device (22) manages power source variations in an elevator system. The device includes a transformer (60) having a primary (62) and a secondary (64). An input of the elevator system is connected to the secondary (64). Tap switches (66a, 66b, 66c, 66d) are connected to the transformer (60) such that each tap switch is connected to a tap point (68a, 68b, 68c, 68d) on the transformer (60). A controller (54) operates the tap switches (66a, 66b, 66c, 66d) based on a sensed power source output to provide power on the secondary (64) within a tolerance band of the elevator system.Type: ApplicationFiled: August 31, 2006Publication date: May 13, 2010Applicant: OTIS ELEVATOR COMPANYInventors: Pengju Kang, Mauro J. Atalla, Daryl J. Marvin, Vladimir Blasko, Robert K. Thornton, Stella M. Oggianu