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公开(公告)号：US20140152109A1
公开(公告)日：2014-06-05
申请号：US13689776
申请日：2012-11-30
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Viswanathan Kanakasabai , Rajendra Naik , Silvio Colombi , Said Farouk Said El-Barbari , Pradeep Vijayan
IPC: H02J9/00
CPC classification number: H02M3/33584 , H02J9/062 , H02M2007/4835 , Y10T307/615 , Y10T307/625
Abstract: A medium voltage uninterruptible power supply system is presented. The system includes a first power converter coupled between a first bus and a second bus. Furthermore, a second power converter operatively coupled to the first power converter via the first bus and the second bus, where the second power converter includes at least three legs, where the at least three legs include a plurality of switching units, and where the plurality of switching units includes at least two semiconductor switches and an energy storage device. Additionally, system includes a direct current link coupled between the first bus and the second bus. Also, system includes an energy source coupled to the second power converter, the direct current link, or a combination thereof via one or more of a third power converter, a transformer, and a fourth power converter. Method of operating a medium voltage uninterruptible power supply system is also presented.
Abstract translation: 介绍了一种中压不间断电源系统。 该系统包括耦合在第一总线和第二总线之间的第一功率转换器。 此外，第二功率转换器通过第一总线和第二总线可操作地耦合到第一功率转换器，其中第二功率转换器包括至少三个支路，其中至少三个支路包括多个开关单元，并且其中多个 的开关单元包括至少两个半导体开关和能量存储装置。 另外，系统包括耦合在第一总线和第二总线之间的直流链路。 而且，系统包括经由第三功率转换器，变压器和第四功率转换器中的一个或多个耦合到第二功率转换器，直流连接或其组合的能量源。 还介绍了操作中压不间断电源系统的方法。
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公开(公告)号：US20240275209A1
公开(公告)日：2024-08-15
申请号：US18583387
申请日：2024-02-21
Applicant: General Electric Company
Inventor： Kapil Jha , Pradeep Vijayan , Yash Veer Singh
Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit configured to convert a first DC voltage of an input power to a first AC voltage. Further, the wireless power transfer system includes a contactless power transfer unit configured to receive the input power having the first AC voltage from the first converting unit and transmit the input power. Also, the wireless power transfer system includes a second converting unit configured to receive the input power from the contactless power transfer unit and convert the first AC voltage of the input power to a second DC voltage. Furthermore, the wireless power transfer system includes a switching unit configured to regulate the second DC voltage across the electric load if the second DC voltage across the electric load is greater than a voltage reference value.
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公开(公告)号：US11955805B2
公开(公告)日：2024-04-09
申请号：US16880712
申请日：2020-05-21
Applicant: General Electric Company
Inventor： Kapil Jha , Pradeep Vijayan , Yash Veer Singh
CPC classification number: H02J50/10 , B60L53/12 , H02J50/80 , H02J50/90 , H02H3/023 , H02H3/20 , H02H9/041
Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit configured to convert a first DC voltage of an input power to a first AC voltage. Further, the wireless power transfer system includes a contactless power transfer unit configured to receive the input power having the first AC voltage from the first converting unit and transmit the input power. Also, the wireless power transfer system includes a second converting unit configured to receive the input power from the contactless power transfer unit and convert the first AC voltage of the input power to a second DC voltage. Furthermore, the wireless power transfer system includes a switching unit configured to decouple the second converting unit from the contactless power transfer unit if the second DC voltage across the electric load is greater than a first threshold value.
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公开(公告)号：US11764609B2
公开(公告)日：2023-09-19
申请号：US17707819
申请日：2022-03-29
Applicant: General Electric Company
Inventor： Pradeep Vijayan , Rajendra Naik , Arun Kumar Raghunathan , Vishnu Mahadeva Iyer
Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.
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公开(公告)号：US20200251931A1
公开(公告)日：2020-08-06
申请号：US16855619
申请日：2020-04-22
Applicant: General Electric Company
Inventor： Kapil Jha , Pradeep Vijayan , Yash Veer Singh
Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit configured to convert a first DC voltage of an input power to a first AC voltage. Further, the wireless power transfer system includes a contactless power transfer unit configured to receive the input power having the first AC voltage from the first converting unit and transmit the input power. Also, the wireless power transfer system includes a second converting unit configured to receive the input power from the contactless power transfer unit and convert the first AC voltage of the input power to a second DC voltage. Furthermore, the wireless power transfer system includes a switching unit configured to regulate the second DC voltage across the electric load if the second DC voltage across the electric load is greater than a voltage reference value.
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Patent Agency Ranking
公开(公告)号：US10097095B2
公开(公告)日：2018-10-09
申请号：US15272179
申请日：2016-09-21
Applicant: General Electric Company
Inventor： Pradeep Vijayan , Vishnu Mahadeva Iyer
Abstract: A variable frequency resonant converter includes an inverter stage, a resonant circuit, a transformer, a rectifier stage, and a controller. The inverter and rectifier stages include first and second FET devices. The inverter converts a DC input signal to a first AC signal. The resonant circuit is coupled to the inverter stage and filters the first AC signal. The transformer is coupled to the resonant circuit and converts the first AC signal to a second AC signal. The rectifier stage is coupled to the transformer and converts the second AC signal to a DC output signal. The controller is configured to operate both of the first and second FET devices substantially at a resonant frequency at least partially defined by the resonant circuit to generate the DC output signal according to a voltage setpoint.
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公开(公告)号：US20180083545A1
公开(公告)日：2018-03-22
申请号：US15272179
申请日：2016-09-21
Applicant: General Electric Company
Inventor： Pradeep Vijayan , Vishnu Mahadeva Iyer
CPC classification number: H02M3/33546 , H02M1/088 , H02M3/335 , H02M7/4826 , H02M2001/0009 , H02M2007/4815
Abstract: A variable frequency resonant converter includes an inverter stage, a resonant circuit, a transformer, a rectifier stage, and a controller. The inverter and rectifier stages include first and second FET devices. The inverter converts a DC input signal to a first AC signal. The resonant circuit is coupled to the inverter stage and filters the first AC signal. The transformer is coupled to the resonant circuit and converts the first AC signal to a second AC signal. The rectifier stage is coupled to the transformer and converts the second AC signal to a DC output signal. The controller is configured to operate both of the first and second FET devices substantially at a resonant frequency at least partially defined by the resonant circuit to generate the DC output signal according to a voltage setpoint.
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公开(公告)号：US09748844B2
公开(公告)日：2017-08-29
申请号：US14975349
申请日：2015-12-18
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Ramanujam Ramabhadran , Jeffrey Joseph Nasadoski , Yehuda Daniel Levy , Shimon Khananshvili , Pradeep Vijayan , Bruce Richard Roberts
CPC classification number: H02M3/1582 , H02M1/12 , H02M1/4208 , H02M1/4225 , H05B33/0815 , Y02B70/126
Abstract: An electronic device includes a controller configured to regulate one or more voltages or currents of a power converter. The controller is configured to receive an input voltage of the power converter, determine whether the power converter is operating in a first mode of operation or a second mode of operation based at least in part on the input voltage, generate a multiplier reference signal for the power converter based on whether the power converter is operating in the first mode of operation or the second mode of operation, and adjust an input current of the power converter based at least in part on the multiplier reference signal. Adjusting the input current includes correcting the input current to be substantially identical in form to the input voltage.
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公开(公告)号：US09685820B2
公开(公告)日：2017-06-20
申请号：US14306641
申请日：2014-06-17
Applicant: General Electric Company
Inventor： Yashomani Kolhatkar , Pradeep Vijayan , Viswanathan Kanakasabai , Silvio Colombi , Rajendra Naik , Prashanth Manikumar Chennamsetty
CPC classification number: H02J9/061 , G05F3/02 , H02J3/40 , H02J3/46 , H02J4/00 , H02J9/062 , Y10T307/344
Abstract: A system is provided. The system includes a utility, a plurality of uninterruptible power supplies (UPSs), a ring bus, at least one load electrically coupled to the plurality of UPSs and the ring bus, and a controller communicatively coupled to the plurality of UPSs, the controller configured to determine a common reference angle while the utility is disconnected from at least one UPS of the plurality of UPSs, calculate a phase angle for each UPS of the plurality of UPSs, wherein the phase angle for each UPS is calculated relative to the common reference angle, and control operation of each UPS based on the respective calculated phase angles.
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公开(公告)号：US20170155278A9
公开(公告)日：2017-06-01
申请号：US14186159
申请日：2014-02-21
Applicant: General Electric Company
Inventor： YASHOMANI KOLHATKAR , Pradeep Vijayan , Silvio Colombi , Rajendra Naik , Viswanathan Kanakasabai
CPC classification number: H02J9/062 , G06F1/26 , G06F1/30 , H02J3/08 , H02J2009/068 , H02M5/42 , Y10T307/344
Abstract: A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), a ring bus, at least one load electrically coupled to the plurality of UPSs and the ring bus, and a controller communicatively coupled to the plurality of UPSs. The controller is configured to calculate a phase angle for each UPS of the plurality of UPSs, wherein the phase angle is calculated relative to a common reference angle, and control operation of each UPS based on the respective calculated phase angles.
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