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公开(公告)号：US09831717B2
公开(公告)日：2017-11-28
申请号：US14855930
申请日：2015-09-16
Applicant: General Electric Company
Inventor： Viswanathan Kanakasabai , Silvio Colombi , Said Farouk Said El-Barbari , Rajendra Naik , Prashanth Manikumar Chennamsetty
CPC classification number: H02J9/061 , H02J7/0068 , H02J7/007 , H02J9/062 , H02J2009/067
Abstract: An uninterruptible power supply (UPS) and methods of operation are provided. The UPS includes a transformer configured to receive power from a utility. The transformer includes a primary winding, a secondary winding, and a tertiary winding. The UPS also includes a rectifier coupled to the secondary winding and an inverter coupled to an output of the rectifier, wherein a connection between the rectifier and the inverter defines a DC link. The inverter is configured to output a first regulated voltage configured to be provided to a load. The UPS further includes a voltage-boost converter coupled to the tertiary winding and is configured to output a second regulated voltage to be combined with the first regulated 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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Patent Agency Ranking
公开(公告)号：US20190181768A1
公开(公告)日：2019-06-13
申请号：US16327493
申请日：2017-08-08
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Prashanth Manikumar Chennamsetty , Rien William O'Steen , Pradeep Vijayan , Arvind Kumar Tiwari
CPC classification number: H02M3/33592 , H02M1/08 , H02M2001/0009 , H02M2001/0048 , H02M2001/327 , Y02B70/1475 , Y02B70/1491
Abstract: A system including a converter is disclosed. The converter includes a first switch having one or more first controllable switches coupled in parallel across at least one diode. A first controlling unit is operatively coupled to the converter. The first controlling unit is configured to determine a temperature of the one or more first controllable switches. The first controlling unit is further configured to compare the determined temperature of the one or more first controllable switches with a transition temperature at which a first power loss of the one or more first controllable switches is equal to a second power loss of the at least one diode and control a switching state of the one or more first controllable switches based on the comparison of the determined temperature with the transition temperature.
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公开(公告)号：US20150263566A1
公开(公告)日：2015-09-17
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.
Abstract translation: 提供了一个系统。 该系统包括公用事业，多个不间断电源（UPS），环形总线，至少一个负载电耦合到多个UPS和环形总线的负载，以及控制器，其通信地耦合到多个UPS，所述控制器被配置 以在公用事业与多个UPS的至少一个UPS断开连接时确定公共参考角度，计算多个UPS中的每个UPS的相位角，其中每个UPS的相位角相对于公共参考角度被计算 并根据相应的计算出的相位角控制各个UPS的运行。
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公开(公告)号：US10974607B2
公开(公告)日：2021-04-13
申请号：US15643537
申请日：2017-07-07
Applicant: General Electric Company
Inventor： Ajith Kuttannair Kumar , Govardhan Ganireddy , Shahid Ali , Prashanth Manikumar Chennamsetty
Abstract: A power system is disclosed. The power system includes a first power generating unit. The first power generating unit includes a first power converting subunit and a first control unit coupled to the first power converting subunit, where the first control unit is configured to regulate a voltage of the first power generating unit. The power system further includes a second power generating unit coupled to the first power generating unit and a load, where the second power generating unit includes a second power converting subunit and a second control unit coupled to the second power converting subunit, wherein the second control unit is configured to control a current of the second power generating unit to share a quantity of electrical output current flowing through the load among the first and second power generating units.
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公开(公告)号：US10811985B2
公开(公告)日：2020-10-20
申请号：US16327493
申请日：2017-08-08
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Prashanth Manikumar Chennamsetty , Rien William O'Steen , Pradeep Vijayan , Arvind Kumar Tiwari
Abstract: A system including a converter is disclosed. The converter includes a first switch having one or more first controllable switches coupled in parallel across at least one diode. A first controlling unit is operatively coupled to the converter. The first controlling unit is configured to determine a temperature of the one or more first controllable switches. The first controlling unit is further configured to compare the determined temperature of the one or more first controllable switches with a transition temperature at which a first power loss of the one or more first controllable switches is equal to a second power loss of the at least one diode and control a switching state of the one or more first controllable switches based on the comparison of the determined temperature with the transition temperature.
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公开(公告)号：US10348184B2
公开(公告)日：2019-07-09
申请号：US15675845
申请日：2017-08-14
Applicant: General Electric Company
Inventor： Shahid Ali , Ajith Kuttannair Kumar , Govardhan Ganireddy , Prashanth Manikumar Chennamsetty
Abstract: A power system is presented. The power system includes a first converter including a first output terminal a first control unit coupled to the first converter, a second converter including a second output terminal, where the second converter is coupled in parallel to the first converter, and a second control unit coupled to the second converter. The second control unit is configured to measure a plurality of phase currents at the second output terminal, determine a harmonic current transmitted by the second converter based on single phase current of the plurality of measured phase currents, and change a time-period of at least one switching cycle of a carrier wave of the second converter based on the determined harmonic current to synchronize with a carrier wave of the first converter.
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