公开(公告)号：US09425702B2

公开(公告)日：2016-08-23

申请号：US14290333

申请日：2014-05-29

申请人： Eaton Corporation

发明人： Bruno Patrice-Bernard Lequesne ,  Yakov Lvovich Familiant ,  Qiang Fu ,  Vijay Bhavaraju

IPC分类号： H02M5/293 ,  H02M1/00

CPC分类号： H02M5/293 ,  H02M2001/0058 ,  H02M2005/2932 ,  Y02B70/1491

摘要： A system and method for controlling switching in an AC-AC converter is disclosed. A controller for the AC-AC converter determines a direction of current flow on supply lines that provide AC power to the AC-AC converter and determines a switching pattern for each of a plurality of line-side switches and each of a plurality of floating-neutral side switches in the AC-AC converter based on the determined direction of current flow on each of the supply lines. The controller causes the line-side switches and the floating-neutral side switches to operate in an ON or OFF condition according to the determined switching pattern, such that a controlled current flow is output from the AC-AC converter. The controller also implements a safe-switching routine when transitioning from a first switching pattern to a second switching pattern that prevents a non-zero current from being interrupted during the transitioning between the first and second switching patterns.

摘要翻译： 公开了一种用于控制AC-AC转换器中的开关的系统和方法。 AC-AC转换器的控制器确定向AC-AC转换器提供AC电力的电源线上的电流的方向，并且确定多个线路侧开关中的每一个的切换模式，以及多个浮动 - 基于所确定的每条电源线上的电流方向，AC-AC转换器中的中立侧开关。 控制器根据确定的开关模式使线路侧开关和浮动中性侧开关在ON或OFF状态下工作，从而从AC-AC转换器输出受控电流。 当从第一切换模式转换到第二切换模式时，控制器还实现安全切换程序，其防止在第一和第二切换模式之间的转换期间非零电流被中断。

公开(公告)号：US20160191046A1

公开(公告)日：2016-06-30

申请号：US14577154

申请日：2014-12-19

申请人： Eaton Corporation

发明人： Tiefu Zhao ,  Jiangbiao He ,  Vijay Bhavaraju ,  Mengbin Ben Yang

IPC分类号： H03K17/567

CPC分类号： H03K17/567 ,  H02M1/088 ,  H02M7/487 ,  H03K17/127 ,  H03K2217/0027 ,  H03K2217/0036

摘要： An integrated circuit includes a hybrid switch having first and second switching devices of different type therein. A control circuit is provided, which is configured to drive the first and second devices with respective first and second control signals having first and second unequal duty cycles, respectively, when the first and second devices are supporting a forward current in a first current range. The control circuit is further configured to drive the first and second devices with respective third and fourth control signals having third and fourth unequal duty cycles, respectively, when the first and second devices are supporting a forward current in a second current range outside the first current range. The first duty cycle may be greater than the second duty cycle and the third duty cycle may be less than the fourth duty cycle.

摘要翻译： 集成电路包括其中具有不同类型的第一和第二开关装置的混合开关。 提供控制电路，其被配置为当第一和第二设备在第一电流范围内支持正向电流时，分别驱动具有第一和第二不同占空比的相应的第一和第二控制信号的第一和第二设备。 控制电路还被配置为当第一和第二器件在第一电流之外的第二电流范围内支持正向电流时，分别驱动具有第三和第四不同占空比的相应第三和第四控制信号的第一和第二器件 范围。 第一占空比可以大于第二占空比，并且第三占空比可以小于第四占空比。

公开(公告)号：US08947030B2

公开(公告)日：2015-02-03

申请号：US13729266

申请日：2012-12-28

申请人： Eaton Corporation

发明人： Yakov Lvovich Familiant ,  Zeljko Radomir Jankovic ,  Bruno Patrice-Bernard Lequesne ,  Vijay Bhavaraju

IPC分类号： H02P27/16

CPC分类号： H02P27/16 ,  H02M5/293 ,  H02M2005/2932

摘要： A load control device to control current flow to an AC load includes a circuit having line-side switches and floating-neutral side switches, along with a controller connected to the circuit that is programmed to control the circuit so as to cause each of the line-side switches and each of the floating-neutral side switches to switch between an On condition or an Off condition to selectively operate the circuit in an active mode and a free-wheeling mode. A full phase voltage is provided to the AC load during the active mode and a zero voltage is provided to the AC load during the free-wheeling mode. The controller applies a modulating function to the circuit, so as to modulate a supply voltage to control a frequency and an average of a load voltage present across terminals of the AC load, thereby enabling variable frequency operation of the AC load.

摘要翻译： 用于控制到AC负载的电流的负载控制装置包括具有线路侧开关和浮动中性侧开关的电路，以及连接到电路的控制器，该控制器被编程以控制电路，以使每个线路 侧开关和每个浮动中性侧开关在“开”状态或“关”状态之间切换，以选择性地以活动模式和续流模式操作电路。 在有功模式期间，向AC负载提供全相电压，并且在续流模式期间向AC负载提供零电压。 控制器对电路施加调制功能，以便调制电源电压以控制交流负载端子之间存在的负载电压的频率和平均值，从而实现AC负载的可变频率操作。

公开(公告)号：US09941700B2

公开(公告)日：2018-04-10

申请号：US14585835

申请日：2014-12-30

申请人： EATON CORPORATION

发明人： Vijay Bhavaraju ,  Qiang Fu ,  Yakov L. Familiant ,  Christopher S. Thompson

IPC分类号： H02J3/28 ,  H02J3/38 ,  H02J3/16

CPC分类号： H02J3/383 ,  H02J3/16 ,  H02J3/28 ,  H02J3/382 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E40/34 ,  Y02E70/30

摘要： An energy system includes renewable energy sources each including an inverter. The renewable source inverters are coupled to a distribution line in a manner wherein power combines additively. The system also includes an energy storage source including an energy storage inverter coupled to the distribution line between the point of interconnection and the renewable source inverters. Finally, a control system is structured to: (i) control a voltage at the point of interconnection by controlling a renewable source reactive power output by the renewable source inverters and an energy storage reactive power output by the energy storage inverter, and (ii) provide power ramp rate control for the renewable energy system by controlling at least one of a renewable source real power output by each of the renewable source inverters and a first energy storage real power output by the energy storage inverter.

公开(公告)号：US09397657B1

公开(公告)日：2016-07-19

申请号：US14577154

申请日：2014-12-19

申请人： Eaton Corporation

发明人： Tiefu Zhao ,  Jiangbiao He ,  Vijay Bhavaraju ,  Mengbin Ben Yang

IPC分类号： H03K17/687 ,  H03K17/60 ,  H03K17/567

CPC分类号： H03K17/567 ,  H02M1/088 ,  H02M7/487 ,  H03K17/127 ,  H03K2217/0027 ,  H03K2217/0036

摘要： An integrated circuit includes a hybrid switch having first and second switching devices of different type therein. A control circuit is provided, which is configured to drive the first and second devices with respective first and second control signals having first and second unequal duty cycles, respectively, when the first and second devices are supporting a forward current in a first current range. The control circuit is further configured to drive the first and second devices with respective third and fourth control signals having third and fourth unequal duty cycles, respectively, when the first and second devices are supporting a forward current in a second current range outside the first current range. The first duty cycle may be greater than the second duty cycle and the third duty cycle may be less than the fourth duty cycle.

摘要翻译： 集成电路包括其中具有不同类型的第一和第二开关装置的混合开关。 提供控制电路，其被配置为当第一和第二设备在第一电流范围内支持正向电流时，分别驱动具有第一和第二不同占空比的相应的第一和第二控制信号的第一和第二设备。 控制电路还被配置为当第一和第二器件在第一电流之外的第二电流范围内支持正向电流时，分别驱动具有第三和第四不同占空比的相应第三和第四控制信号的第一和第二器件 范围。 第一占空比可以大于第二占空比，并且第三占空比可以小于第四占空比。

公开(公告)号：US09103852B2

公开(公告)日：2015-08-11

申请号：US14059621

申请日：2013-10-22

申请人： EATON CORPORATION

发明人： Gerald Zheng ,  Jack Gu ,  Bruce Wu ,  Vijay Bhavaraju ,  Xin Zhou

IPC分类号： G01R31/02 ,  G01R19/00 ,  H01H71/12

CPC分类号： G01R19/0092 ,  G01R15/18 ,  G01R19/18 ,  H01H71/125 ,  H02H1/0007 ,  H02H3/087

摘要： A circuit for sensing a direct current includes a first resistance and a second resistance. A first portion of the direct current flows through the first resistance and a second portion of the direct current flows through the second resistance. The circuit further includes a current sensor having an opening, first and second conductors inductively coupled with the current sensor, and a switching circuit having a pair of switches structured to alternatingly switch in order that the second portion of the direct current alternatingly flows through the first and second conductors. The second portion of the direct current flowing through the first conductor passes through the opening of the current sensor in a first direction and the second portion of the direct current flowing through the second conductor passes through the opening of the current sensor in a second direction opposite to the first direction.

摘要翻译： 用于感测直流电路的电路包括第一电阻和第二电阻。 直流电流的第一部分流经第一电阻，第二部分直流电流流过第二电阻。 电路还包括电流传感器，其具有开口，与电流传感器感应耦合的第一和第二导体，以及开关电路，其具有一对开关，其被构造为交替地切换，以便直流的第二部分交替地流过第一 和第二导体。 流过第一导体的直流电流的第二部分沿着第一方向穿过电流传感器的开口，并且流过第二导体的直流的第二部分在相反的第二方向上穿过电流传感器的开口 到第一个方向。

公开(公告)号：US09620994B2

公开(公告)日：2017-04-11

申请号：US13743631

申请日：2013-01-17

申请人： EATON CORPORATION

发明人： Vijay Bhavaraju

IPC分类号： H02J13/00 ,  H02J3/38

CPC分类号： H02J13/0006 ,  H02J3/381 ,  H02J2003/388 ,  Y02E40/72 ,  Y02P80/14 ,  Y04S10/12

摘要： A system for detecting islanding of a microgrid includes a number of power sources to output real power and controlled reactive power injection; a number of controllers each controlling one of the number of power sources; and an output from the microgrid powered by the number of power sources. A number of electrical switching apparatus electrically connect the output from the microgrid to a grid and electrically disconnect the output from the microgrid from the grid. A microgrid controller detects islanding of the microgrid with respect to the grid, and sends a number of commands to a number of the number of controllers in order to control reactive power injection by a number of the number of power sources. A communication channel is between the microgrid controller and the number of controllers. A number of microgrid loads are powered by the output from the microgrid.

公开(公告)号：US10056851B2

公开(公告)日：2018-08-21

申请号：US14291610

申请日：2014-05-30

申请人： Eaton Corporation

发明人： Dongxiao Wu ,  Bruno Patrice-Bernard Lequesne ,  Yahan Hua ,  Vijay Bhavaraju ,  Kaijam M. Woodley ,  Steven Andrew Dimino

IPC分类号： H02P6/182 ,  H02P1/26 ,  H02P29/02

CPC分类号： H02P1/26 ,  H02P1/029 ,  H02P6/182 ,  H02P23/14 ,  H02P2207/01

摘要： A system and method for estimating operating characteristics of an induction motor is disclosed. The system includes a motor control device that is electrically connectable between a motor and a power source. The motor control device includes a plurality of switching devices comprising at least one thyristor corresponding to a respective phase of the motor. The motor control device also includes a controller programmed to disconnect the power source from the motor for a predetermined time period following a first plurality of cycles of a mains phase voltage of the power source. The controller is further programmed to measure a back-emf voltage during the predetermined time period, estimate an operating characteristic of the motor from the measured back-emf voltage, and trigger the plurality of switching devices to reconnect the power source to the motor following estimation of the operating characteristic.

公开(公告)号：US09298204B2

公开(公告)日：2016-03-29

申请号：US13727886

申请日：2012-12-27

申请人： Eaton Corporation

发明人： Zeljko Radomir Jankovic ,  Vijay Bhavaraju ,  Bruno Patrice-Bernard Lequesne ,  Yakov Lvovich Familiant

IPC分类号： H02M5/293 ,  G05F3/04 ,  H02P1/28 ,  H02P1/42 ,  H02M1/00

CPC分类号： G05F3/04 ,  H02M2001/0009 ,  H02M2005/2932 ,  H02P1/28 ,  H02P1/42

摘要： A load control device includes an input and an output connectable to an AC source and an AC load, respectively, with one or more supply lines each corresponding to a phase in the load connecting the input and output. Line-side switches are connected between a line terminal and load terminal, and floating-neutral side switches are connected to the load terminal at one end and at a common neutral connection at another end. A controller determines a direction of current flow on each of the supply lines, determines a switching pattern for each of the line-side switches and each of the floating-neutral side switches based on the determined direction of current flow, and causes each of the line-side switches and floating-neutral side switches to operate in an On condition or an Off condition according to the determined switching pattern, such that a controlled uninterrupted current is provided to the AC load.

摘要翻译： 负载控制装置包括分别连接到AC电源和AC负载的输入和输出，一个或多个电源线各自对应于连接输入和输出的负载中的相位。 线路侧开关连接在线路端子和负载端子之间，浮动中性侧开关一端连接到负载端子，另一端连接到公共中性点。 控制器确定每条电源线上的电流的方向，基于确定的电流方向确定每个线路侧开关和每个浮动中性侧开关的开关模式，并且使 线路侧开关和浮动中性侧开关根据确定的开关模式工作在开状态或关状态，使得向AC负载提供受控的不间断电流。

公开(公告)号：US20150349673A1

公开(公告)日：2015-12-03

申请号：US14291610

申请日：2014-05-30

申请人： Eaton Corporation

发明人： Dongxiao Wu ,  Bruno Patrice-Bernard Lequesne ,  Yahan Hua ,  Vijay Bhavaraju ,  Kaijam M. Woodley ,  Steven Andrew Dimino

IPC分类号： H02P1/26

CPC分类号： H02P1/26 ,  H02P1/029 ,  H02P6/182 ,  H02P23/14 ,  H02P2207/01

摘要： A system and method for estimating operating characteristics of an induction motor is disclosed. The system includes a motor control device that is electrically connectable between a motor and a power source. The motor control device includes a plurality of switching devices comprising at least one thyristor corresponding to a respective phase of the motor. The motor control device also includes a controller programmed to disconnect the power source from the motor for a predetermined time period following a first plurality of cycles of a mains phase voltage of the power source. The controller is further programmed to measure a back-emf voltage during the predetermined time period, estimate an operating characteristic of the motor from the measured back-emf voltage, and trigger the plurality of switching devices to reconnect the power source to the motor following estimation of the operating characteristic.

摘要翻译： 公开了一种用于估计感应电动机的操作特性的系统和方法。 该系统包括可在电动机和电源之间电连接的电动机控制装置。 电动机控制装置包括多个开关装置，其包括与电动机的相应相对应的至少一个晶闸管。 电动机控制装置还包括被编程为在电源的电源相电压的第一多个周期之后的预定时间段内断开电源与电动机的控制器。 控制器进一步被编程为在预定时间段期间测量反电动势电压，从所测量的反电动势电压估计电动机的工作特性，并且触发多个开关装置以根据估计将电源重新连接到电动机 的操作特性。