公开(公告)号：US20140002215A1

公开(公告)日：2014-01-02

申请号：US13928477

申请日：2013-06-27

申请人： Bogdan Ionescu ,  Peter Willard Hammond ,  Richard H. Osman

发明人： Bogdan Ionescu ,  Peter Willard Hammond ,  Richard H. Osman

IPC分类号： H01H71/00

CPC分类号： H01H71/24 ,  H01H1/54 ,  H01H50/18 ,  H01H50/54 ,  H01H50/546 ,  H01H71/00

摘要： An electrical contact apparatus is disclosed. The contact apparatus has first contact member having a first contact, a movable contact member received adjacent to the first contact member, the movable contact member having an opposing contact positioned adjacent the first contact, and an armature operable to produce an electromagnetic closing force to cause the movable contact member to remain closed upon application of current through the first contact member, movable contact member. Contact assemblies and methods of operating the contact apparatus are disclosed, as are other aspects.

摘要翻译： 公开了一种电接触装置。 所述接触装置具有第一接触构件，所述第一接触构件具有第一接触件，邻近所述第一接触构件容纳的可动接触构件，所述可动接触构件具有邻近所述第一接触件定位的相对接触件，以及可操作以产生电磁闭合力的衔铁， 所述可动接触构件在通过所述第一接触构件，可动接触构件施加电流时保持闭合。 与其他方面一样，公开了操作接触装置的接触组件和方法。

公开(公告)号：US20130334998A1

公开(公告)日：2013-12-19

申请号：US13915815

申请日：2013-06-12

申请人： Richard H. Osman

发明人： Richard H. Osman

IPC分类号： H02P1/02

CPC分类号： H02P1/028 ,  G01R19/0092 ,  H02P1/30 ,  H02P1/52 ,  H02P25/18 ,  H02P27/04

摘要： A system for soft starting a large AC motor may include a variable frequency drive (VFD) having a much lower voltage rating than the rated voltage of the AC motor. The VFD's voltage rating may be in a range of about 33% to about 67% of the AC motor's rated voltage. The AC motor may be coupled to a utility power source via conventional connections to leads of the AC motor's windings. The VFD may be connected to the AC motor via tapped connections within the windings of the AC motor such that the tap voltages are much less than the AC motor's rated voltage. A less expensive VFD may therefore be used to soft start the AC motor instead of a VFD having the same rated voltage as the AC motor. Methods of starting large AC motors with a VFD are also provided, as are other aspects.

摘要翻译： 用于软启动大型AC电动机的系统可以包括具有比AC电动机的额定电压低得多的额定电压的变频驱动器（VFD）。 VFD的额定电压可能在交流电机额定电压的约33％至约67％的范围内。 AC电动机可以经由与AC电动机的绕组的引线的常规连接而耦合到公用电源。 变频器可以通过交流电动机绕组内的抽头连接连接到交流电动机，使得抽头电压远小于交流电动机的额定电压。 因此，较便宜的VFD可用于软起动交流电动机，而不是与交流电动机具有相同额定电压的变频器。 还提供了启动具有VFD的大型AC电动机的方法，以及其他方面。

公开(公告)号：US07948340B2

公开(公告)日：2011-05-24

申请号：US12200377

申请日：2008-08-28

申请人： Mukul Rastogi ,  Richard H. Osman ,  Peter Willard Hammond ,  Marc F. Aiello

发明人： Mukul Rastogi ,  Richard H. Osman ,  Peter Willard Hammond ,  Marc F. Aiello

IPC分类号： H01F30/12 ,  H01F27/02 ,  H01F21/02 ,  H01F27/28 ,  H01F27/24 ,  H01F7/06

CPC分类号： H01F30/14 ,  H01F27/24 ,  H01F2041/0711 ,  H02M1/12 ,  H02M5/14 ,  Y10T29/4902 ,  Y10T29/49071

摘要： A three-phase, multi-winding includes a core, the core including a hub and an outer shell around a perimeter of the hub. wherein the hub and the outer shell are in a fixed position with respect to each other. The core also includes multiple slots. In addition to the core, the multi-winding device includes a primary winding positioned in at least two of the slots; and multiple spatially distributed secondary windings, wherein at least one of the secondary windings is positioned proximate the primary winding in at least one of the two slots.

摘要翻译： 三相多绕组包括一个芯，该芯包括一个轮毂和围绕轮毂周边的外壳。 其中所述轮毂和所述外壳相对于彼此处于固定位置。 核心还包括多个插槽。 除了芯体之外，多绕组装置包括位于至少两个槽中的初级绕组; 和多个空间分布的次级绕组，其中所述次级绕组中的至少一个位于所述两个槽中的至少一个中的所述初级绕组附近。

公开(公告)号：US20080258672A1

公开(公告)日：2008-10-23

申请号：US12105766

申请日：2008-04-18

申请人： Richard H. Osman ,  Kinjal Patel ,  Mukul Rastogi

发明人： Richard H. Osman ,  Kinjal Patel ,  Mukul Rastogi

IPC分类号： H02P1/50

CPC分类号： H02P9/302 ,  H02P1/50 ,  H02P21/00 ,  H02P25/03 ,  H02P2207/05

摘要： A starting method and system for a motor where the motor may be started as an induction motor by applying a magnetizing current to build flux through the stator, with the field current set at the maximum permissible exciter stator current (i.e., the current that will cause rated no-load current in the main field at the transition speed). The motor stator currents will be maintained at a value that allows the motor to generate sufficient breakaway torque to overcome any stiction. At a specific transition speed or after a period of time, the drive will initiate a transition from induction motor control to synchronous motor control by removing the initial magnetizing current, and a field current is then applied to the motor through the DC exciter. Once this transition is completed, the drive may ramp up to the desired speed demand.

摘要翻译： 电动机的起动方法和系统，其中电动机可以通过施加磁化电流作为感应电动机起动以通过定子建立磁通，其中励磁电流设定在最大允许的励磁机定子电流（即将导致的电流） 在过渡速度下，在主场中额定空载电流）。 电动机定子电流将保持在允许电动机产生足够的分离转矩以克服任何静压的值。 在特定的转变速度或一段时间后，驱动器将通过移除初始磁化电流来启动从感应电动机控制转换到同步电动机控制，然后通过直流励磁器将励磁电流施加到电动机。 一旦完成这一转换，驱动器可能会升高到所需的速度要求。

公开(公告)号：US07428158B2

公开(公告)日：2008-09-23

申请号：US11518979

申请日：2006-09-11

申请人： John Channing Bousfield, III ,  Richard H. Osman

发明人： John Channing Bousfield, III ,  Richard H. Osman

IPC分类号： H02M5/458 ,  H02M1/12

CPC分类号： H02M5/4585 ,  H02M1/12 ,  H02M7/49

摘要： A power delivery system, and a method for operating it includes a plurality of power cells that are electrically connected to a multi-winding machine comprising one or more primary windings and a plurality of secondary windings such that each cell is electrically connected to one of the secondary windings and a plurality of the secondary windings are phase-shifted with respect to the primary windings. The method includes determining, for each cell in a set of the power cells, a carrier offset angle, and synchronizing, by the each cell in the set, a carrier signal to the secondary voltage for the cell based on the carrier offset angle determined for the cell. The carrier signal for each cell controls the timing of operation of switching devices within the cell.

摘要翻译： 电力输送系统及其操作方法包括电连接到多绕组机器的多个功率单元，所述多绕组机器包括一个或多个初级绕组和多个次级绕组，使得每个单元电连接到 次级绕组和多个次级绕组相对于初级绕组相移。 该方法包括：确定一组功率单元中的每个小区的载波偏移角，并且由该组中的每个小区基于为该小区确定的载波偏移角确定载波信号到该小区的次级电压 细胞。 每个小区的载波信号控制小区内的交换设备的操作时序。

公开(公告)号：US20090212724A1

公开(公告)日：2009-08-27

申请号：US12389935

申请日：2009-02-20

申请人： Richard H. Osman ,  Mukul Rastogi

发明人： Richard H. Osman ,  Mukul Rastogi

IPC分类号： H02P3/22

CPC分类号： H02P3/22

摘要： A system for braking a motor. The system includes at least one resistor and a contactor connected to the at least one resistor and a motor. The system further includes a variable frequency drive electrically connected to the motor, wherein the variable frequency drive comprises a controller operably connected to the contactor, wherein at least a portion of the contactor closes connecting the at least one resistor to the motor in response to a command from the controller. The variable frequency drive is configured such that motor flux levels may be maintained at a relatively high level as motor torque current is reduced, resulting in a consistently high motor flux level as the motor speed decreases.

摘要翻译： 一种制动电机的系统。 该系统包括至少一个电阻器和连接到至少一个电阻器和电动机的接触器。 该系统还包括电连接到电动机的变频驱动器，其中变频驱动器包括可操作地连接到接触器的控制器，其中接触器的至少一部分关闭将至少一个电阻器连接到电动机，以响应于 命令从控制器。 变频驱动器被配置为使电动机磁通量水平可以保持在较高的水平，因为电动机转矩电流减小，导致马达速度降低时持续高的电动机通量水平。

公开(公告)号：US07508147B2

公开(公告)日：2009-03-24

申请号：US11419064

申请日：2006-05-18

申请人： Mukul Rastogi ,  Richard H. Osman ,  Yusuke Fukuta

发明人： Mukul Rastogi ,  Richard H. Osman ,  Yusuke Fukuta

IPC分类号： H02P3/14

CPC分类号： H02M7/49 ,  H02J3/1892 ,  H02M1/32 ,  H02M5/458 ,  H02P27/08

摘要： An electrical device includes a plurality of single-phase power cells electrically connected to receive power from a source and deliver power to a load. The single-phase power cells include a first rank of regenerative power cells and a second rank of non-regenerative power cells. Each non-regenerative power cell may include an inverter bridge, a capacitor set electrically connected across terminals of the inverter bridge, and a three-phase bridge rectifier electrically connected across the terminals. The non-regenerative power cells may provide reactive power when the plurality of cells are used for braking of a motor.

摘要翻译： 电气设备包括电连接以从源接收功率并将功率传递给负载的多个单相功率单元。 单相功率单元包括再生功率单元的第一等级和非再生功率单元的第二等级。 每个非再生功率单元可以包括逆变器桥，电连接在逆变桥的端子上的电容器，以及跨越端子电连接的三相桥式整流器。 当多个电池用于制动电动机时，非再生电力单元可以提供无功功率。

公开(公告)号：US07307400B2

公开(公告)日：2007-12-11

申请号：US11420578

申请日：2006-05-26

申请人： Mukul Rastogi ,  Marc F. Aiello ,  Richard H. Osman

发明人： Mukul Rastogi ,  Marc F. Aiello ,  Richard H. Osman

IPC分类号： H02P27/04 ,  H02P7/622 ,  H02M1/12

CPC分类号： H02M7/49 ,  H02M5/458 ,  H02P27/16

摘要： A variable frequency drive including a plurality of power cells that are configured as three phases of series-connected cells to deliver power to a load. The drive is operated to increase the output voltage of each power cell using overmodulation.

摘要翻译： 一种变频驱动器，包括被配置为串联连接的单元的三相的多个功率单元，以向负载输送功率。 使用过调制来驱动驱动器来增加每个功率单元的输出电压。

公开(公告)号：US08134316B2

公开(公告)日：2012-03-13

申请号：US12389935

申请日：2009-02-20

申请人： Richard H. Osman ,  Mukul Rastogi

发明人： Richard H. Osman ,  Mukul Rastogi

IPC分类号： H02P3/12

CPC分类号： H02P3/22

摘要： A system for braking a motor. The system includes at least one resistor and a contactor connected to the at least one resistor and a motor. The system further includes a variable frequency drive electrically connected to the motor, wherein the variable frequency drive comprises a controller operably connected to the contactor, wherein at least a portion of the contactor closes connecting the at least one resistor to the motor in response to a command from the controller. The variable frequency drive is configured such that motor flux levels may be maintained at a relatively high level as motor torque current is reduced, resulting in a consistently high motor flux level as the motor speed decreases.

摘要翻译： 一种制动电机的系统。 该系统包括至少一个电阻器和连接到至少一个电阻器和电动机的接触器。 该系统还包括电连接到电动机的变频驱动器，其中变频驱动器包括可操作地连接到接触器的控制器，其中接触器的至少一部分关闭将至少一个电阻器连接到电动机，以响应于 命令从控制器。 变频驱动器被配置为使电动机磁通量水平可以保持在较高的水平，因为电动机转矩电流减小，导致马达速度降低时持续高的电动机通量水平。

公开(公告)号：US07977910B2

公开(公告)日：2011-07-12

申请号：US12105766

申请日：2008-04-18

申请人： Richard H. Osman ,  Kinjal Patel ,  Mukul Rastogi

发明人： Richard H. Osman ,  Kinjal Patel ,  Mukul Rastogi

IPC分类号： H02P23/00 ,  H02P25/00 ,  H02P1/50

CPC分类号： H02P9/302 ,  H02P1/50 ,  H02P21/00 ,  H02P25/03 ,  H02P2207/05

摘要： A starting method and system for a motor where the motor may be started as an induction motor by applying a magnetizing current to build flux through the stator, with the field current set at the maximum permissible exciter stator current (i.e., the current that will cause rated no-load current in the main field at the transition speed). The motor stator currents will be maintained at a value that allows the motor to generate sufficient breakaway torque to overcome any stiction. At a specific transition speed or after a period of time, the drive will initiate a transition from induction motor control to synchronous motor control by removing the initial magnetizing current, and a field current is then applied to the motor through the DC exciter. Once this transition is completed, the drive may ramp up to the desired speed demand.

摘要翻译： 电动机的起动方法和系统，其中电动机可以通过施加磁化电流作为感应电动机起动以通过定子建立磁通，其中励磁电流设定在最大允许的励磁机定子电流（即将导致的电流） 在过渡速度下，在主场中额定空载电流）。 电动机定子电流将保持在允许电动机产生足够的分离转矩以克服任何静压的值。 在特定的转变速度或一段时间后，驱动器将通过移除初始磁化电流来启动从感应电动机控制转换到同步电动机控制，然后通过直流励磁器将励磁电流施加到电动机。 一旦完成这一转换，驱动器可能会升高到所需的速度要求。