公开(公告)号：US08058958B2

公开(公告)日：2011-11-15

申请号：US12686336

申请日：2010-01-12

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H01F30/12

CPC分类号： H02J9/005 ,  H01F27/341 ,  H01F27/42 ,  H02J2009/007 ,  Y10T307/297 ,  Y10T307/469

摘要： The invention is a device and method for eliminating core excitation losses in a distribution transformer when the transformer is not supplying power to loads. The invention consists of sensors, a control circuit, a user interface and a power contactor. The power contactor is connected on the line side of a transformer and is opened or closed automatically based on preprogrammed time or load criteria determined by the control circuit. In one operational mode and when the transformer is disconnected from the line, the control board generates low power pulses at the transformer load connection points in order to “search” for loads. If a load is detected, the transformer is reconnected by way of contactor closure. If the transformer load drops to zero, for a predetermined amount of time, the transformer is again disconnected and the pulsed load search is reestablished.

摘要翻译： 本发明是一种用于在变压器不向负载供电时消除配电变压器中的磁芯励磁损耗的装置和方法。 本发明由传感器，控制电路，用户接口和电力接触器组成。 电源接触器连接在变压器的线路侧，并根据由控制电路确定的预编程时间或负载标准自动打开或关闭。 在一种操作模式下，当变压器与线路断开时，控制板在变压器负载连接点产生低功率脉冲，以便“搜索”负载。 如果检测到负载，变压器通过接触器闭合重新连接。 如果变压器负载下降到零，在预定的时间内，变压器再次断开并且重新建立脉冲负载搜索。

公开(公告)号：USD543826S1

公开(公告)日：2007-06-05

申请号：US29255692

申请日：2006-03-13

申请人： Richard T. West

设计人： Richard T. West

公开(公告)号：US07046527B2

公开(公告)日：2006-05-16

申请号：US10249814

申请日：2003-05-09

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H02M1/12

CPC分类号： H02M7/53875 ,  H02M1/12 ,  H02M7/5395

摘要： The invention is an electrical power converter using multiple, high frequency switching elements where the individual switching elements are operated in a synchronous, time-skewed arrangement to provide optimum ripple current cancellation.

摘要翻译： 本发明是一种使用多个高频开关元件的电力转换器，其中各个开关元件以同步，时间偏移的方式工作以提供最佳纹波电流消除。

公开(公告)号：US20120038227A1

公开(公告)日：2012-02-16

申请号：US12854223

申请日：2010-08-11

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H01H9/54

CPC分类号： H01H47/001 ,  H01H9/541 ,  H01H33/596 ,  Y10T307/724 ,  Y10T307/937

摘要： An electrical switch apparatus for use in connecting and disconnecting a DC power source and a load includes first and second pairs of controllable electromechanical contacts coupled to the DC power source and the load for connecting the power source to the load when the contacts are closed, and disconnecting the power source from the load when the contacts are open. A controller is coupled to the electromechanical contacts and programmed to produce control signals for opening and closing the contacts. A diode is coupled to the electromechanical contacts to prevent electrical current from flowing from the load to the power source, and a controllable semiconductor switch is coupled to the controller and across the power source for momentarily short circuiting the source in response to a control signal indicating a transition of either or both of the first and second pairs of electromechanical contacts from a closed condition to an open condition.

摘要翻译： 用于连接和断开DC电源和负载的电气开关装置包括耦合到DC电源的第一和第二对可控机电触点和用于当触点闭合时将电源连接到负载的负载;以及 当触点打开时，断开电源与负载的连接。 控制器耦合到机电触点并被编程以产生用于打开和闭合触点的控制信号。 二极管耦合到机电触头，以防止电流从负载流向电源，并且可控半导体开关耦合到控制器并跨过电源，以响应于控制信号指示源短暂地短路 第一和第二对机电触点中的任一个或两个从闭合状态到打开状态的转变。

公开(公告)号：US20120019964A1

公开(公告)日：2012-01-26

申请号：US12842111

申请日：2010-07-23

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H02H3/00 ,  H05K7/14

CPC分类号： H02H7/205 ,  H02H3/16

摘要： An electrical power converter for converting power from a bipolar DC source to supply an AC load is disclosed. For one such embodiment the bipolar DC source is a photovoltaic array and the AC power is sourced into an electric power grid. The bipolar photovoltaic array has positive and negative voltage potentials with respect to earth ground. The converter is a utility interactive inverter which does not require an isolation transformer at the electric power grid interface. Embodiments of the invention include methods of detecting and interrupting DC ground faults in the photovoltaic array.

摘要翻译： 公开了一种用于将来自双极型直流电源的电力转换为提供交流负载的电力转换器。 对于一个这样的实施例，双极性直流电源是光伏阵列，并且AC电力来源于电力网。 双极光伏阵列相对于地面具有正和负电压电位。 该转换器是一种实用的交互式逆变器，在电力电网接口上不需要隔离变压器。 本发明的实施例包括检测和中断光伏阵列中的DC接地故障的方法。

公开(公告)号：US20100110742A1

公开(公告)日：2010-05-06

申请号：US12530196

申请日：2007-03-06

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H02M7/5387

CPC分类号： H02M7/44 ,  H02H3/16 ,  H02H7/1222 ,  H02H7/20 ,  H02J3/38 ,  H02J3/383 ,  Y02E10/56 ,  Y02E10/563

摘要： An electrical power converter for converting power from a bipolar DC source to supply an AC load is disclosed. For one such embodiment the bipolar DC source is a photovoltaic array and the AC power is sourced into an electric power grid. The bipolar photovoltaic array has positive and negative voltage potentials with respect to earth ground. The converter is a utility interactive inverter which does not require an isolation transformer at the electric power grid interface. Embodiments of the invention include methods of detecting and interrupting DC ground faults in the photovoltaic array.

摘要翻译： 公开了一种用于将来自双极型直流电源的电力转换为提供交流负载的电力转换器。 对于一个这样的实施例，双极性直流电源是光伏阵列，并且AC电力来源于电力网。 双极光伏阵列相对于地面具有正和负电压电位。 该转换器是一种实用的交互式逆变器，在电力电网接口上不需要隔离变压器。 本发明的实施例包括检测和中断光伏阵列中的DC接地故障的方法。

公开(公告)号：US08467160B2

公开(公告)日：2013-06-18

申请号：US12530196

申请日：2007-03-06

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H02H3/00

CPC分类号： H02M7/44 ,  H02H3/16 ,  H02H7/1222 ,  H02H7/20 ,  H02J3/38 ,  H02J3/383 ,  Y02E10/56 ,  Y02E10/563

摘要： An electrical power converter for converting power from a bipolar DC source to supply an AC load is disclosed. For one such embodiment the bipolar DC source is a photovoltaic array and the AC power is sourced into an electric power grid. The bipolar photovoltaic array has positive and negative voltage potentials with respect to earth ground. The converter is a utility interactive inverter which does not require an isolation transformer at the electric power grid interface. Embodiments of the invention include methods of detecting and interrupting DC ground faults in the photovoltaic array.

摘要翻译： 公开了一种用于将来自双极型直流电源的电力转换为提供交流负载的电力转换器。 对于一个这样的实施例，双极性直流电源是光伏阵列，并且AC电力来源于电力网。 双极光伏阵列相对于地面具有正和负电压电位。 该转换器是一种实用的交互式逆变器，在电力电网接口上不需要隔离变压器。 本发明的实施例包括检测和中断光伏阵列中的DC接地故障的方法。

公开(公告)号：USRE41965E1

公开(公告)日：2010-11-30

申请号：US12205743

申请日：2008-09-05

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H02J1/00

CPC分类号： H02M7/4807 ,  H02J3/387 ,  H02J7/35 ,  H02J2001/004 ,  H02J2009/067 ,  H02M1/10 ,  H02M3/3374 ,  Y02B10/72 ,  Y02B90/14 ,  Y10T307/50 ,  Y10T307/615 ,  Y10T307/625 ,  Y10T307/658 ,  Y10T307/707

摘要： This invention is a multi-port power converter where all ports are coupled through different windings of a high frequency transformer. Two or more, and typically all, ports have synchronized switching elements to allow the use of a high frequency transformer. This concept and type of converter is known. This invention mitigates a number of limitations in the present art and adds new capabilities that will allow applications to be served that would otherwise not have been practical. A novel circuit topology for a four-quadrant AC port is disclosed. A novel circuit topology for a unidirectional DC port with voltage boost capabilities is disclosed. A novel circuit topology for a unidirectional DC port with voltage buck capabilities is disclosed. A novel circuit for a high efficiency, high frequency, bi-directional, AC semiconductor switch is also disclosed.

摘要翻译： 本发明是一种多端口功率转换器，其中所有端口通过高频变压器的不同绕组耦合。 两个或更多个通常所有端口具有同步的开关元件以允许使用高频变压器。 这种转换器的概念和类型是已知的。 本发明减轻了本技术中的许多限制，并增加了将允许应用程序被服务的新功能，否则这些应用将不实用。 公开了一种用于四象限AC端口的新型电路拓扑。 公开了一种具有升压能力的单向DC端口的新型电路拓扑。 公开了一种具有电压降压能力的单向DC端口的新型电路拓扑。 还公开了一种用于高效率，高频率，双向AC交流半导体开关的新型电路。

公开(公告)号：US08643985B2

公开(公告)日：2014-02-04

申请号：US12842111

申请日：2010-07-23

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H02H9/08

CPC分类号： H02H7/205 ,  H02H3/16

摘要： An electrical power converter for converting power from a bipolar DC source to supply an AC load is disclosed. For one such embodiment the bipolar DC source is a photovoltaic array and the AC power is sourced into an electric power grid. The bipolar photovoltaic array has positive and negative voltage potentials with respect to earth ground. The converter is a utility interactive inverter which does not require an isolation transformer at the electric power grid interface. Embodiments of the invention include methods of detecting and interrupting DC ground faults in the photovoltaic array.

摘要翻译： 公开了一种用于将来自双极型直流电源的电力转换为提供交流负载的电力转换器。 对于一个这样的实施例，双极性直流电源是光伏阵列，并且AC电力来源于电力网。 双极光伏阵列相对于地面具有正和负电压电位。 该转换器是一种实用的交互式逆变器，在电力电网接口上不需要隔离变压器。 本发明的实施例包括检测和中断光伏阵列中的DC接地故障的方法。

公开(公告)号：US08350414B2

公开(公告)日：2013-01-08

申请号：US12854223

申请日：2010-08-11

申请人： Richard T. West

发明人： Richard T. West

IPC分类号： H02J1/00

CPC分类号： H01H47/001 ,  H01H9/541 ,  H01H33/596 ,  Y10T307/724 ,  Y10T307/937

摘要： An electrical switch apparatus for use in connecting and disconnecting a DC power source and a load includes first and second pairs of controllable electromechanical contacts coupled to the DC power source and the load for connecting the power source to the load when the contacts are closed, and disconnecting the power source from the load when the contacts are open. A controller is coupled to the electromechanical contacts and programmed to produce control signals for opening and closing the contacts. A diode is coupled to the electromechanical contacts to prevent electrical current from flowing from the load to the power source, and a controllable semiconductor switch is coupled to the controller and across the power source for momentarily short circuiting the source in response to a control signal indicating a transition of either or both of the first and second pairs of electromechanical contacts from a closed condition to an open condition.

摘要翻译： 用于连接和断开DC电源和负载的电气开关装置包括耦合到DC电源的第一和第二对可控机电触点和用于当触点闭合时将电源连接到负载的负载;以及 当触点打开时，断开电源与负载的连接。 控制器耦合到机电触点并被编程以产生用于打开和闭合触点的控制信号。 二极管耦合到机电触头，以防止电流从负载流向电源，并且可控半导体开关耦合到控制器并且跨过电源，以响应于控制信号指示源短暂地短路 第一和第二对机电触点中的任一个或两个从闭合状态到打开状态的转变。