公开(公告)号：US20160072375A1

公开(公告)日：2016-03-10

申请号：US14482969

申请日：2014-09-10

Applicant: General Electric Company

Inventor： Rui Zhou ,  Luis Jose Garces ,  Ravisekhar Nadimpalli Raju ,  Rixin Lai ,  Di Zhang

IPC: H02M1/00 ,  H02M3/335

CPC classification number: H02M3/33569 ,  H02M1/44 ,  H02M2001/0058 ,  H02M2007/4835 ,  Y02B70/1491

Abstract: A system and method for series connecting electronic power devices are disclosed. In one embodiment, a switching device system includes a first upper arm electrically coupled to a first lower arm and a second upper arm electrically coupled to a second lower arm. Each of the arms include a plurality of low voltage sub-modules connected in series and each plurality of low voltage sub-modules includes an auxiliary switching device, a series switching device, and a capacitor. Each plurality of low voltage sub-modules is configured to be sequentially switched using the auxiliary switching device and the series switching device separately in the upper arms and the respective lower arms to control change in voltage over time (dV/dt) while selectively blocking a desired high voltage. Further, a capacitor voltage balancing (sorting or rotating) algorithm may be used to actively balance voltage across each plurality of low voltage sub-modules.

Abstract translation: 公开了一种用于串联电子功率器件的系统和方法。 在一个实施例中，开关装置系统包括电耦合到第一下臂的第一上臂和电耦合到第二下臂的第二上臂。 每个臂包括串联连接的多个低压子模块，并且每个多个低压子模块包括辅助开关装置，串联开关装置和电容器。 每个多个低压子模块被配置为使用辅助开关装置和串联开关装置在上臂和相应的下臂中分开地依次切换以控制电压随时间的变化（dV / dt），同时选择性地阻塞 所需高电压。 此外，可以使用电容器电压平衡（分选或旋转）算法来主动平衡每个低压子模块的电压。

公开(公告)号：US20150256093A1

公开(公告)日：2015-09-10

申请号：US14200937

申请日：2014-03-07

Applicant: General Electric Company

Inventor： Ranjan Kumar Gupta ,  Luis Jose Garces ,  Ravisekhar Nadimpalli Raju

IPC: H02M5/458 ,  H02J3/36

CPC classification number: H02M5/4585 ,  H02J3/36 ,  H02M1/12 ,  H02M3/158 ,  H02M7/162 ,  H02M7/521 ,  H02M7/7575 ,  H02M2001/007 ,  H02M2001/0077 ,  H02M2007/4835 ,  Y02E60/60

Abstract: A hybrid HVDC converter system includes at least one alternating current (AC) conduit, at least one transformer coupled to said at least one AC conduit, and at least one direct current (DC) conduit. The hybrid HVDC converter system also includes at least one capacitor commutated converter (CCC) configured to convert AC voltages and AC currents to a DC voltage and DC current. The at least one CCC is coupled to the at least one AC conduit through the at least one transformer. The hybrid HVDC converter system further includes at least one self-commutated converter (SCC) configured to convert AC voltages and AC currents to a regulated DC voltage and DC current. The at least one SCC includes at least one AC/DC stage and at least one DC/DC stage coupled to the at least one AC/DC stage.

Abstract translation: 混合HVDC转换器系统包括至少一个交流（AC）导管，耦合到所述至少一个AC导管的至少一个变压器和至少一个直流（DC）导管。 混合HVDC转换器系统还包括被配置为将AC电压和AC电流转换为DC电压和DC电流的至少一个电容器换向转换器（CCC）。 所述至少一个CCC通过所述至少一个变压器耦合到所述至少一个AC导管。 混合HVDC转换器系统还包括至少一个自整流转换器（SCC），其配置成将AC电压和AC电流转换成稳压的DC电压和DC电流。 所述至少一个SCC包括耦合到所述至少一个AC / DC级的至少一个AC / DC级和至少一个DC / DC级。