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公开(公告)号：US20180241200A1
公开(公告)日：2018-08-23
申请号：US15754783
申请日：2016-08-22
Applicant: GE Energy Power Conversion Technology Ltd
Inventor： Lihua HU , Teng LONG , Martin Samuel BUTCHER , Allan David CRANE
CPC classification number: H02H7/26 , G01R19/2513 , G01R23/16 , G01R31/025 , G01R31/086 , H02H1/0007 , H02H3/162
Abstract: A power distribution system includes power converter systems electrically connected to a distribution bus which defines a point of common coupling. Each power converter system includes a power converter with semiconductor switching devices controlled using a pulse width modulation strategy with a switching frequency. A controller for each power converter system applies a spectrum analysis process to the respective power converter system that uses measured or derived zero sequence currents associated with the respective power converter system to determine the location of a ground fault within the power distribution system. Each controller applies a switching frequency process where the switching frequency of the power converter of at least one of the power converter systems is different from the switching frequency of the power converter of at least another one of the power converter systems during at least part of the time that the spectrum analysis process is applied.
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公开(公告)号：US20170346398A1
公开(公告)日：2017-11-30
申请号：US15610120
申请日：2017-05-31
Applicant: GE ENERGY POWER CONVERSION TECHNOLOGY LTD
Inventor： Teng LONG , Allan David CRANE , Martin Charles SOUTHALL , Mounir LOUATI
CPC classification number: H02M3/158 , H02M1/14 , H02M3/1582
Abstract: A DC/DC power converter connected to a DC power source/load having first and second DC terminals. The DC/DC power converter operates in voltage step-up and step-down modes. The converter includes first and second DC buses connected to the first and second DC terminals and third and fourth DC buses defining a DC link. Energy storage devices are connected between the third and fourth buses. A first converter leg includes a first branch with switches and a second branch. Each switch includes a controllable semiconductor switch and an anti-parallel connected freewheeling diode. A controller switches the controllable semiconductor switches between a conducting and non-conducting state, in the step-up and step-down modes, switching to supply power from the DC power source/load to the DC link in the step-up mode and to supply power from the DC link to the DC power source/load in the step-down mode.
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公开(公告)号：US20160315501A1
公开(公告)日：2016-10-27
申请号：US15136580
申请日：2016-04-22
Applicant: GE Energy Power Conversion Technology Ltd
Inventor： Teng LONG , Stephen WOOD , Ushindibaba MUPAMBIREYI
Abstract: A power distribution system is described. The system includes a main ac busbar and an emergency ac busbar. A hybrid drive system includes an induction electrical machine and a prime mover, the rotor of the electrical machine and the driving end of the prime mover being mechanically coupled to a load by means of a mechanical linkage such as a gearbox. The system includes a first active rectifier/inverter having ac input terminals electrically connected to the main ac busbar, and dc output terminals. The system includes a second active rectifier/inverter having dc input terminals electrically connected to the dc output of the first active rectifier/inverter by a dc link, and ac output terminals electrically connected to the induction electrical machine. A blackout restart system includes a rectifier having ac input terminals selectively electrically connectable to the emergency ac busbar and dc output terminals selectively electrically connectable to the dc link.
Abstract translation: 描述配电系统。 该系统包括主交流母线和紧急交流母线。 混合动力驱动系统包括感应电机和原动机，电动机的转子和原动机的驱动端通过诸如变速箱的机械联动机构联接到负载。 该系统包括具有电连接到主交流母线的交流输入端子和直流输出端子的第一有源整流器/逆变器。 该系统包括第二有源整流器/逆变器，其具有通过直流链路电连接到第一有源整流器/逆变器的直流输出的直流输入端子，以及电连接到感应电机的交流输出端子。 停电重新启动系统包括整流器，该整流器具有选择性地电连接到紧急交流母线的交流输入端子和选择性地电连接到直流链路的直流输出端子。
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