-
1.发明申请公开(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：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
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：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：US20090058584A1
公开(公告)日：2009-03-05
申请号：US12200377
申请日：2008-08-28
IPC分类号： H01F30/12
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; 以及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：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
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：US07948340B2
公开(公告)日：2011-05-24
申请号：US12200377
申请日：2008-08-28
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：US07405498B2
公开(公告)日：2008-07-29
申请号：US11435181
申请日：2006-05-16
申请人： Mukul Rastogi , Peter Hammond , Stan Simms
发明人： Mukul Rastogi , Peter Hammond , Stan Simms
IPC分类号： H02J1/02
CPC分类号： H02J3/1857 , H02M7/49 , Y02E40/26
摘要： A multi-phase active filter includes a group of power cells electrically connected in a three-phase configuration, a precharging circuit, and a controller that controls the voltage delivered to the plurality of power cells. Each power cell includes an inverter having a pair of direct current (DC) terminals, at least one capacitor electrically connected in parallel with the inverter, and an energy dissipating circuit that is electrically connected in parallel with the inverter. The energy dissipating circuit of each power cell self-regulates DC voltage within the cell.
摘要翻译： 多相有源滤波器包括以三相配置电连接的一组功率单元，预充电电路和控制输送到多个功率单元的电压的控制器。 每个功率单元包括具有一对直流（DC）端子的逆变器，与逆变器并联电连接的至少一个电容器和与逆变器并联电连接的能量消耗电路。 每个功率单元的耗能电路自调节电池内的直流电压。
-
公开(公告)号：US20070035261A1
公开(公告)日：2007-02-15
申请号：US11504567
申请日：2006-08-14
IPC分类号： H02P1/54
CPC分类号： H02P5/46 , H02P29/032
摘要： A method for controlling at least two series-cell based drives connected in parallel. The method comprises detecting a failed cell in one of the drives, inhibiting operation of the drive with the failed cell, determining a peak output voltage capability of the drive with the failed cell, communicating the peak output voltage capability to a master controller, and limiting a maximum voltage that each drive can apply to a motor. The method also comprises bypassing the failed cell and resuming operation of the drive with the failed cell after the motor voltage falls below the peak output voltage capability of the drive with the failed cell.
摘要翻译： 用于控制并联连接的至少两个基于串联单元的驱动器的方法。 该方法包括检测其中一个驱动器中的故障单元，禁止具有故障单元的驱动器的操作，确定具有故障单元的驱动器的峰值输出电压能力，将峰值输出电压能力传递给主控制器，并限制 每个驱动器可以应用于电机的最大电压。 该方法还包括在电动机电压低于具有故障单元的驱动器的峰值输出电压能力之后绕过故障单元并且恢复具有故障单元的驱动器的操作。
-
-
-
-
-
-
-
-
-
搜索结果
31 条记录 (耗时 0.019 秒)
