公开(公告)号：US20150349653A1

公开(公告)日：2015-12-03

申请号：US14290333

申请日：2014-05-29

Applicant: Eaton Corporation

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

IPC: H02M5/293

CPC classification number: H02M5/293 ,  H02M2001/0058 ,  H02M2005/2932 ,  Y02B70/1491

Abstract: 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.

Abstract translation: 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：US09502901B2

公开(公告)日：2016-11-22

申请号：US13669638

申请日：2012-11-06

Applicant: EATON CORPORATION

Inventor： Vijay Bhavaraju ,  Richard P. Peplinski ,  Anish Prasai ,  Uday Mhaskar

IPC: H02J1/00 ,  H02J3/00 ,  H02J3/38

CPC classification number: H02J3/38 ,  H02J3/383 ,  H02J2003/388 ,  Y02E10/563 ,  Y10T307/707 ,  Y10T307/729

Abstract: An area electric power system includes a number of direct current power sources, and a number of inverters operatively associated with the number of direct current power sources. Each of the number of inverters is structured to provide real power and controlled reactive power injection to detect islanding. An output is powered by the number of inverters. A number of electrical switching apparatus are structured to electrically connect the number of inverters to and electrically disconnect the number of inverters from a utility grid. A number of devices are structured to detect islanding with respect to the utility grid responsive to a number of changes of alternating current frequency or voltage of the output.

Abstract translation: 区域电力系统包括多个直流电源，以及与多个直流电源可操作地相关联的多个逆变器。 逆变器中的每一个被构造成提供实际功率和可控的无功功率注入来检测孤岛。 输出由逆变器的数量供电。 多个电气开关装置被构造成将逆变器的数量电连接到电力电网上并使电力断开。 多个装置被构造成响应于输出的交流频率或电压的多个变化来检测关于公用电网的孤岛。

公开(公告)号：US20160181861A1

公开(公告)日：2016-06-23

申请号：US14577486

申请日：2014-12-19

Applicant: Eaton Corporation

Inventor： Yakov Lvovich Familiant ,  Michael P. Nowak ,  Vijay Bhavaraju ,  George Arthur Navarro

IPC: H02J9/06

Abstract: Power is provided from a power source and a status of the power source is signaled by controlling a waveform of an AC voltage generated from the power source. The status may include, for example, a capacity of the power source. In some embodiments, a frequency of the AC voltage may be controlled to signal the status. The power source may include, for example, an uninterruptible power supply (UPS), and signaling a status of the power source may include controlling an inverter of the UPS to signal the status. Related systems are also described.

Abstract translation: 从电源提供电力，并且通过控制从电源产生的AC电压的波形来发信号通知电源的状态。 该状态可以包括例如电源的容量。 在一些实施例中，可以控制AC电压的频率以表示状态。 电源可以包括例如不间断电源（UPS），并且信令电源的状态可以包括控制UPS的逆变器来发信号通知状态。 还描述了相关系统。

公开(公告)号：US20140184190A1

公开(公告)日：2014-07-03

申请号：US13727886

申请日：2012-12-27

Applicant: EATON CORPORATION

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

IPC: G05F3/04

CPC classification number: G05F3/04 ,  H02M2001/0009 ,  H02M2005/2932 ,  H02P1/28 ,  H02P1/42

Abstract: 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.

Abstract translation: 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：US20140184118A1

公开(公告)日：2014-07-03

申请号：US13729266

申请日：2012-12-28

Applicant: EATON CORPORATION

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

IPC: H02P27/16

CPC classification number: H02P27/16 ,  H02M5/293 ,  H02M2005/2932

Abstract: 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.

Abstract translation: 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。