公开(公告)号：US20140185346A1

公开(公告)日：2014-07-03

申请号：US13729943

申请日：2012-12-28

Applicant: EATON CORPORATION

Inventor： Yu Liu ,  Andraw Ho ,  Nash Lee ,  Slobodan Krstic

IPC: H03K17/56 ,  H01L29/739 ,  H02M7/537 ,  H01L29/16

CPC classification number: H02M3/155 ,  H01L29/1602 ,  H01L29/1608 ,  H01L29/7393 ,  H02M7/487 ,  H02M7/537 ,  H03K17/127 ,  H03K17/56 ,  H03K17/567 ,  H03K2217/0036

Abstract: A hybrid switching circuit includes first and second switching devices containing first and second unequal bandgap semiconductor materials. These switching devices, which support parallel conduction in response to first and second control signals, are three or more terminal switching devices of different type. For example, the first switching device may be a three or more terminal wide bandgap switching device selected from a group consisting of JFETs, IGFETs and high electron mobility transistors HEMTs, and the second switching device may be a Si-IGBT. A control circuit is also provided, which is configured to drive the first and second switching devices with first and second periodic control signals having first and second unequal duty cycles. The first duty cycle may be greater than the second duty cycle and the active phases of the second periodic control signal may occur exclusively within the active phases of the first periodic control signal.

Abstract translation: 混合开关电路包括包含第一和第二不等带隙半导体材料的第一和第二开关器件。 响应于第一和第二控制信号支持并行传导的这些开关装置是三种或更多种不同类型的端子开关装置。 例如，第一开关器件可以是从由JFET，IGFET和高电子迁移率晶体管HEMT组成的组中选择的三个或更多个终端宽带隙开关器件，并且第二开关器件可以是Si-IGBT。 还提供了一种控制电路，其被配置为利用具有第一和第二不等工作周期的第一和第二周期性控制信号驱动第一和第二开关装置。 第一占空比可以大于第二占空比，并且第二周期控制信号的有效相位可以专门发生在第一周期性控制信号的有效相位内。

公开(公告)号：US10199858B2

公开(公告)日：2019-02-05

申请号：US15271709

申请日：2016-09-21

Applicant: Eaton Corporation

Inventor： Robert William Johnson, Jr. ,  Yu Liu ,  Bobby L. Compton ,  Pasi S. Taimela ,  Robert C. Sebald

IPC: H02J7/00 ,  H02J9/00 ,  H02J9/06 ,  H02J3/38

Abstract: An uninterruptible power supply (UPS) system includes a first port configured to be coupled to an AC power source and a second port configured to be coupled to a load. The system also includes a UPS circuit including a first converter circuit coupled to the first port, a second converter circuit coupled to the second port and a DC bus coupling the first converter circuit to the second converter circuit and configured to be coupled to an auxiliary power source and a third converter circuit coupled to the second port and configured to receive power from a variably available power source. The system further includes a control circuit operatively associated with the UPS circuit and the third converter circuit and configured to cooperatively control the UPS circuit and the third converter circuit to selectively transfer power to the load from the AC power source and the variably available power source and from the variably available power source to the AC power source.

公开(公告)号：US20170077748A1

公开(公告)日：2017-03-16

申请号：US15271709

申请日：2016-09-21

Applicant: Eaton Corporation

Inventor： Robert William Johnson, JR. ,  Yu Liu ,  Bobby L. Compton ,  Pasi S. Taimela ,  Robert C. Sebald

IPC: H02J9/06 ,  H02J7/00

CPC classification number: H02J9/061 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  H02J7/007 ,  H02J9/062 ,  Y02B10/72 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E10/763 ,  Y10T307/615 ,  Y10T307/625

Abstract: An uninterruptible power supply (UPS) system includes a first port configured to be coupled to an AC power source and a second port configured to be coupled to a load. The system also includes a UPS circuit including a first converter circuit coupled to the first port, a second converter circuit coupled to the second port and a DC bus coupling the first converter circuit to the second converter circuit and configured to be coupled to an auxiliary power source and a third converter circuit coupled to the second port and configured to receive power from a variably available power source. The system further includes a control circuit operatively associated with the UPS circuit and the third converter circuit and configured to cooperatively control the UPS circuit and the third converter circuit to selectively transfer power to the load from the AC power source and the variably available power source and from the variably available power source to the AC power source.

Abstract translation: 不间断电源（UPS）系统包括被配置为耦合到AC电源的第一端口和被配置为耦合到负载的第二端口。 该系统还包括UPS电路，其包括耦合到第一端口的第一转换器电路，耦合到第二端口的第二转换器电路和将第一转换器电路耦合到第二转换器电路并被配置为耦合到辅助电力的DC总线 源和第三转换器电路，其耦合到第二端口并且被配置为从可变地可用的电源接收电力。 该系统还包括与UPS电路和第三转换器电路可操作地相关联的控制电路，并且被配置为协调地控制UPS电路和第三转换器电路以选择性地将功率从AC电源和可变可用电源传输到负载，以及 从可变电源到交流电源。

公开(公告)号：US09219363B2

公开(公告)日：2015-12-22

申请号：US13858420

申请日：2013-04-08

Applicant: EATON CORPORATION

Inventor： Yu Liu ,  Charles J. Luebke ,  Christopher S. Thompson

IPC: H02J1/10 ,  G05F5/00 ,  H02J3/38

CPC classification number: H02J1/102 ,  G05F5/00 ,  H02J3/385 ,  Y02E10/58 ,  Y10T307/707

Abstract: A photovoltaic system includes a photovoltaic array and a DC/AC inverter. The photovoltaic array includes an output, a plurality of photovoltaic strings each including a plurality of photovoltaic modules electrically connected in series to form an output having a first direct current voltage, and a plurality of DC/DC converters each including a first maximum power point tracking mechanism for a corresponding one of the photovoltaic strings, an input of the output of the corresponding one of the photovoltaic strings, and an output having a second direct current voltage. Each output of the DC/DC converters is electrically connected in parallel or series to form the output of the photovoltaic array having a direct current voltage. The DC/AC inverter includes a second maximum power point tracking mechanism for the photovoltaic array, an input of the output of the photovoltaic array, and an output having an alternating current voltage.

Abstract translation: 光伏系统包括光伏阵列和DC / AC逆变器。 光伏阵列包括输出，多个光伏串，每个光伏串包括串联电连接以形成具有第一直流电压的输出的多个光伏模块，以及多个DC / DC转换器，每个包括第一最大功率点跟踪 用于相应的一个光伏串的机构，对应的一个光伏串的输出的输入和具有第二直流电压的输出。 DC / DC转换器的每个输出并联或串联电连接以形成具有直流电压的光伏阵列的输出。 DC / AC逆变器包括用于光伏阵列的第二最大功率点跟踪机构，光伏阵列的输出的输入和具有交流电压的输出。

公开(公告)号：US20150171663A1

公开(公告)日：2015-06-18

申请号：US14132652

申请日：2013-12-18

Applicant: Eaton Corporation

Inventor： Slobodan Krstic ,  Yu Liu

IPC: H02J9/06 ,  H02J7/02 ,  H02M1/096 ,  H02M7/23 ,  H02M3/158

CPC classification number: H02J9/061 ,  H02M1/096 ,  H02M1/12 ,  H02M3/156 ,  H02M3/158 ,  H02M7/219 ,  H02M7/23 ,  H02M2001/0048 ,  H02M2001/0077 ,  H02M2001/0087 ,  Y02B70/1491 ,  Y02P80/11 ,  Y10T307/344 ,  Y10T307/615 ,  Y10T307/625

Abstract: An apparatus includes a current source rectifier circuit having an input configured to be coupled to an AC power source and an output configured to be coupled to a load, a coupling circuit configured to couple a DC power source to the current source rectifier, and a control circuit configured to selectively operate the current source rectifier circuit and the coupling circuit to generate a DC output from the AC power source and the DC power source. In some embodiments, the control circuit may be configured to operate the coupling circuit to provide a DC/DC converter circuit that uses an energy storage inductor of the current source rectifier circuit. The apparatus may further include a freewheeling diode shared by the current source rectifier circuit and the DC/DC converter circuit. Such apparatus may be used, for example, in DC UPS applications.

Abstract translation: 一种装置包括电流源整流电路，其具有被配置为耦合到AC电源的输入和被配置为耦合到负载的输出，被配置为将DC电源耦合到电流源整流器的耦合电路，以及控制 电路，被配置为选择性地操作电流源整流器电路和耦合电路以产生来自AC电源和DC电源的DC输出。 在一些实施例中，控制电路可以被配置为操作耦合电路以提供使用电流源整流器电路的能量存储电感器的DC / DC转换器电路。 该装置还可以包括由电流源整流电路和DC / DC转换器电路共享的续流二极管。 这样的装置可以用于例如DC UPS应用中。

公开(公告)号：US20150108958A1

公开(公告)日：2015-04-23

申请号：US14060197

申请日：2013-10-22

Applicant: Eaton Corporation

Inventor： Jun Xu ,  Yu Liu ,  Yilei Gu

IPC: H02M3/155

CPC classification number: H02M3/155 ,  H01L29/1602 ,  H01L29/1608 ,  H01L29/7393 ,  H02M7/487 ,  H02M7/537 ,  H03K17/127 ,  H03K17/56 ,  H03K17/567 ,  H03K2217/0036

Abstract: Three-level T-type power converters include a totem-pole arrangement of first and second wide bandgap field effect transistors, which are electrically connected in common at an output node of the converter. A pair of power transistors is provided along with a totem-pole arrangement of first and second capacitors. The power transistors are electrically connected in an opposing series relationship between the output node and a reference node. The first and second capacitors are electrically connected in common at the reference node. The first capacitor has a first terminal electrically connected to a first terminal of the first wide bandgap field effect transistor and the second capacitor has a second terminal electrically connected to a second terminal of the second wide bandgap field effect transistor.

Abstract translation: 三电平T型电力转换器包括在转换器的输出节点处共同电连接的第一和第二宽带隙场效应晶体管的图腾柱布置。 一对功率晶体管与第一和第二电容器的图腾柱布置一起提供。 功率晶体管以输出节点和参考节点之间的相反的串联关系电连接。 第一和第二电容器在参考节点处共同电连接。 第一电容器具有电连接到第一宽带隙场效应晶体管的第一端子的第一端子，并且第二电容器具有电连接到第二宽带隙场效应晶体管的第二端子的第二端子。