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公开(公告)号：US20170302204A1
公开(公告)日：2017-10-19
申请号：US15098929
申请日：2016-04-14
Applicant: General Electric Company
Inventor： Zhihui Yuan , Robert Roesner , Stefan Schroeder , Ara Panosyan , Krishna Kumar Anaparthi
IPC: H02P9/04
CPC classification number: F03D9/257 , F03D9/255 , H02J3/386 , H02P9/04 , H02P2101/15
Abstract: This disclosure relates to systems and methods for controlling a wind converter for a weak electrical grid. In one embodiment of the disclosure, a system for controlling the wind converter includes a wind converter connected to an electrical grid at a point of connection (POC) and operable to transfer a power to the electrical grid. The system includes a first control loop operable to calculate, based on electrical grid parameters and wind converter characteristics, a voltage reference to be generated by the wind converter. The system includes a second control loop to convert, based on the electrical grid parameters, the voltage reference into a current reference. The second loop converts the angle information of the voltage reference into a voltage at the POC. The system includes a third control to regulate, based at least on the current reference, the power transferred by the wind converter to the electrical grid.
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22.发明授权公开(公告)号：US09777966B2
公开(公告)日：2017-10-03
申请号：US14168206
申请日：2014-01-30
Applicant: General Electric Company
Inventor： Mark Aaron Chan Chan , Stefan Schroeder , Piniwan Thiwanka Bandara Wijekoon , Eric Ayres Browne
CPC classification number: F28D15/02 , H05K7/20236 , H05K7/20927
Abstract: A subsea power module includes an outer pressure compensated vessel defining an interior chamber and one or more heat generating electrical components disposed within the interior chamber. The outer pressure compensated vessel is configured to maintain a pressure within the interior chamber substantially the same as an ambient pressure outside the outer pressure compensated vessel. Each of the electrical components may be disposed within an inner chamber of a pressure vessel disposed within the interior chamber of the outer pressure compensated vessel. Each of the one or more heat generating electrical components is configured to transfer heat generated within the interior chamber of the outer pressure compensated vessel through the wall defining the interior chamber to a fluid, such as seawater, surrounding the outer pressure compensated vessel.
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公开(公告)号：US09755545B2
公开(公告)日：2017-09-05
申请号：US14550297
申请日：2014-11-21
Applicant: General Electric Company
Inventor： Qin Lei , Jie Shen , Stefan Schroeder
CPC classification number: H02M7/487 , H02M1/12 , H02M7/483 , H02M2001/123
Abstract: A power conversion system includes at least one multi-level power converter and a controller coupled to the at least one multi-level power converter. The controller includes a first CMV injection module and a second CMV injection module. The first CMV injection module generates a first CMV signal for modifying at least one voltage command to achieve a first function in association with operation of the power conversion system. The second CMV injection module generates a second CMV signal based at least in part on a three-level CMV limit either for modifying the at least one voltage command or for further modifying the at least one modified voltage command to achieve a second function in association with operation of the power conversion system.
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公开(公告)号：US20170250542A1
公开(公告)日：2017-08-31
申请号：US15054131
申请日：2016-02-26
Applicant: General Electric Company
Inventor： Ara Panosyan , Piniwan Thiwanka Bandara Wijekoon , Stefan Schroeder , Eva-Maria Baerthlein
IPC: H02J4/00
Abstract: A power distribution system for providing a desired value of voltage regulation is presented. The system includes at least one power source, at least one sink, a distribution feeder configured to couple the at least one power source to the at least one sink. The system includes a plurality of modular voltage regulation units coupled to the distribution feeder, where each of the plurality of modular voltage regulation units includes a transformer including a primary winding having a first end and a second end and a secondary winding having a first end and a second end; and at least one switch coupled to the primary winding of the transformer, where the first end of the secondary winding is coupled to at least one of the first and second ends of the primary winding via the at least one switch. A method of operating a power distribution system is also presented.
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公开(公告)号：US09640312B2
公开(公告)日：2017-05-02
申请号：US14462972
申请日：2014-08-19
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Zhihui Yuan , Xiaoting Dong , Jie Shen , Stefan Schroeder , Konrad Roman Weeber
CPC classification number: H01F27/28 , H01F30/12 , H01F37/00 , H02M1/126 , H02M2001/123
Abstract: A common mode choke includes at least two groups of multi-phase coils wound on a magnetic core for balancing differential mode inductance between the phases. The multi-phase coils in each group are series connected and concentrically wound on a respective portion of the magnetic core. Each group of multi-phase coils is non-overlapping with each other group of multi-phase coils.
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Patent Agency Ranking
公开(公告)号：US09537416B2
公开(公告)日：2017-01-03
申请号：US14555956
申请日：2014-11-28
Applicant: General Electric Company
Inventor： Zhihui Yuan , Qingyun Chen , Stefan Schroeder , Jie Shen
CPC classification number: H02M5/44 , H02M1/36 , H02M5/45 , H02M7/483 , H02M2007/4835
Abstract: An electrical circuit for a power converter includes a first switching device proximate an AC source. The circuit also includes a voltage measurement device proximate a DC link and extends between the AC source and the DC link. The circuit further includes a DC voltage source and a first capacitive device. The first capacitive device is positioned between the first switching device and the voltage measurement device. The circuit further includes a second switching device positioned between the first capacitive device and the voltage measurement device. The circuit also includes a controller operatively coupled to the DC voltage source, the voltage measurement device, and the switching devices. The controller is configured to open the second switching device when a measured voltage signal generated by the voltage measurement device is substantially representative of a reference voltage value.
Abstract translation: 用于功率转换器的电路包括靠近AC电源的第一开关装置。 电路还包括靠近DC链路的电压测量装置，并且在AC源和DC链路之间延伸。 电路还包括直流电压源和第一电容性装置。 第一电容器件位于第一开关器件和电压测量器件之间。 该电路还包括位于第一电容性装置和电压测量装置之间的第二开关装置。 电路还包括可操作地耦合到DC电压源，电压测量装置和开关装置的控制器。 控制器被配置为当由电压测量装置产生的测量电压信号基本上代表参考电压值时，打开第二开关装置。
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公开(公告)号：US20160380572A1
公开(公告)日：2016-12-29
申请号：US15261451
申请日：2016-09-09
Applicant: General Electric Company
Inventor： Jie Shen , Jun Wang , Stefan Schroeder , Fan Zhang
CPC classification number: H02P27/06 , H02P23/0004 , H05K9/0007 , H05K9/002 , H05K9/0049 , H05K9/0088
Abstract: An electromagnetic shielding structure includes a first shielding material disposed at a first location with respect to at least one radiation source and a second shielding material attached with the first shielding material by fastening means. The second shielding material is disposed at a second location with respect to the at least one electromagnetic radiation source so as to define a predetermined gap between the first shielding material and the second shielding material. The first shielding material shields at least part of first frequency electromagnetic radiations generated from the at least one electromagnetic radiation source and penetrating through the second shielding material and the predetermined gap. The second shielding material shields at least part of second frequency electromagnetic radiations generated from the at least one electromagnetic radiation source.
Abstract translation: 电磁屏蔽结构包括相对于至少一个辐射源设置在第一位置处的第一屏蔽材料和通过紧固装置附接有第一屏蔽材料的第二屏蔽材料。 第二屏蔽材料相对于至少一个电磁辐射源设置在第二位置，以便在第一屏蔽材料和第二屏蔽材料之间限定预定的间隙。 第一屏蔽材料屏蔽从至少一个电磁辐射源产生并穿透第二屏蔽材料和预定间隙的第一频率电磁辐射的至少一部分。 第二屏蔽材料屏蔽从至少一个电磁辐射源产生的第二频率电磁辐射的至少一部分。
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公开(公告)号：US09439316B2
公开(公告)日：2016-09-06
申请号：US14244170
申请日：2014-04-03
Applicant: General Electric Company
Inventor： Piniwan Thiwanka Bandara Wijekoon , Christof Martin Sihler , Stefan Schroeder , Mark Aaron Chan
IPC: H02B7/01 , H05K7/02 , H05K13/00 , E21B33/035
CPC classification number: H05K7/02 , E21B33/0355 , E21B41/0007 , H02B7/01 , H05K7/1432 , H05K13/00 , Y10T29/49117
Abstract: A submersible power distribution system is provided. The system includes at least one receptacle configured to be exposed to an underwater environment and a plurality of power conversion modules positioned within the at least one receptacle. Each of the plurality of power conversion modules includes a first enclosure configured to be exposed to the underwater environment, the first enclosure defining a first interior cavity configured to have a first pressure. Power conversion modules also include at least one second enclosure positioned within the first interior cavity. The at least one second enclosure defines a second interior cavity configured to have a second pressure that is lower than the first pressure. The at least one second enclosure is configured to restrict exposure of non-pressure-tolerant power electronics in the second interior cavity to the first pressure.
Abstract translation: 提供潜水配电系统。 该系统包括被配置为暴露于水下环境的至少一个插座和位于该至少一个插座内的多个电力转换模块。 多个电力转换模块中的每一个包括构造成暴露于水下环境的第一外壳，第一外壳限定配置成具有第一压力的第一内腔。 功率转换模块还包括定位在第一内腔内的至少一个第二外壳。 所述至少一个第二外壳限定配置成具有低于第一压力的第二压力的第二内腔。 所述至少一个第二外壳构造成将所述第二内腔中的非耐压电力电子器件的曝光限制到所述第一压力。
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公开(公告)号：US09246407B2
公开(公告)日：2016-01-26
申请号：US13853335
申请日：2013-03-29
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Stefan Schroeder , Qingyun Chen
CPC classification number: H02M7/483 , H02M7/487 , H02M2001/0009 , H02M2001/0012
Abstract: A method of operating a flying capacitor multilevel converter having a direct current link and a plurality of phase legs each having a plurality of flying capacitors includes employing redundant states to balance flying capacitor voltages by charging or discharging flying capacitors. The redundant states are employed by obtaining a load current of the flying capacitor multilevel converter. If a load current value is lower than a threshold value then a capacitor current of a phase terminal capacitor is utilized to determine redundant states else a load current direction is utilized to determine the redundant states.
Abstract translation: 一种操作具有直流连接的多电容多电平转换器和多个相位支路的方法，每个具有多个飞行电容器包括采用冗余状态来通过对飞行电容器进行充电或放电来平衡飞跨电容器电压。 通过获得飞行电容器多电平转换器的负载电流来采用冗余状态。 如果负载电流值低于阈值，则使用相位端子电容器的电容器电流来确定冗余状态，否则利用负载电流方向来确定冗余状态。
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公开(公告)号：US20140198548A1
公开(公告)日：2014-07-17
申请号：US14156760
申请日：2014-01-16
Applicant: General Electric Company
Inventor： Richard S Zhang , Yi Zhu , Fan Zhang , Stefan Schroeder , Jie Shen , Samir Soua
IPC: H02M7/537
Abstract: A converter includes a first converter module and a second converter module coupled to the first converter module in a nested manner. Each of the first converter module and the second converter module includes a plurality of switch units. When the converter is operated to perform power conversion, at least two of the plurality of switch units is configured to be switched both in a complementary pattern and a non-complementary pattern.
Abstract translation: A转换器包括以嵌套方式耦合到第一转换器模块的第一转换器模块和第二转换器模块。 第一转换器模块和第二转换器模块中的每一个包括多个开关单元。 当转换器被操作以执行功率转换时，多个开关单元中的至少两个被配置为以互补模式和非互补模式切换。
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