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    Pole-slip protection system and method for synchronous machines
    2.
    发明授权
    Pole-slip protection system and method for synchronous machines 有权
    同步电机的防滑保护系统和方法

    公开(公告)号：US09093839B2

    公开(公告)日：2015-07-28

    申请号：US13514905

    申请日：2010-12-08

    申请人： Jan Abraham De Kock ,  Lafras Lamont

    发明人： Jan Abraham De Kock ,  Lafras Lamont

    IPC分类号： H02H5/04 ,  H02H7/08 ,  H02H3/48 ,  H02P9/00 ,  H02P9/10 ,  H02P9/30 ,  H02P25/02 ,  H02P29/02 ,  H02H1/04

    CPC分类号： H02H3/48 ,  H02H1/04 ,  H02H7/0805 ,  H02P9/009 ,  H02P9/10 ,  H02P9/302 ,  H02P25/03 ,  H02P29/02

    摘要： A method of protecting a synchronous machine (10) connected to an electricity network (12) against pole-slip comprises the steps of continuously monitoring a power transfer angle (δ) between an electromotive force (EMF) of the machine and a reference voltage Vref. In the event of a fault (24) on the electricity network which may result in pole-slip of the machine (10), deriving a representation of power transfer (P) relating to the machine against the power transfer angle (δ) utilizing data relating to a value of a current or a voltage measured on a terminal (26) of the machine before the fault has occurred and computed data relating to an expected future value of a current or voltage on the terminal (26), after the fault has occurred. The method then utilizes the representation and a stability criterion to predict whether the machine (10) may become unstable and if instability is predicted, causes the machine (10) to be disconnected at 32 or 34 from the electricity network (12).

    摘要翻译： 一种保护连接到电网（12）的同步电机（10）抵抗电极滑移的方法包括以下步骤：连续监测机器的电动势（EMF）与基准电压Vref之间的功率传递角（δ） 。 在电力网络发生故障（24）的情况下，可能导致机器（10）的滑动，利用数据导出与机器相关的功率传递（P）的表示与功率传递角度（δ） 涉及在故障发生之前在机器的终端（26）上测量的电流或电压的值，以及在故障之后具有与终端（26）上的电流或电压的预期未来值有关的计算数据 发生。 然后，该方法利用表示和稳定性标准来预测机器（10）是否可能变得不稳定，并且如果预测不稳定，则使机器（10）在电网（12）处于32或34断开。

    Motor control device
    3.
    发明授权
    Motor control device 有权
    电机控制装置

    公开(公告)号：US09024555B2

    公开(公告)日：2015-05-05

    申请号：US13322247

    申请日：2010-05-27

    申请人： Daisuke Hirono

    发明人： Daisuke Hirono

    IPC分类号： H02H7/09 ,  H02M1/32 ,  H02P6/12 ,  H02P6/18 ,  H02P29/02 ,  H02H7/08 ,  H02M7/5387

    CPC分类号： H02M1/32 ,  H02H7/0805 ,  H02M7/53875 ,  H02P6/12 ,  H02P6/182 ,  H02P29/0241 ,  H02P29/027

    摘要： A motor control device has an overcurrent test unit to send a first test voltage Vt1 lower than a reference voltage Vref for overcurrent determination and a second test voltage Vt2 not lower than the reference voltage Vref to an overcurrent determination unit when a synchronous motor is not rotated. The motor control device determines that an abnormality occurs in the overcurrent detection unit when the overcurrent determination unit determines that the first test voltage Vt1 causes an overcurrent on the basis of a comparison result, or the second test voltage Vt2 causes no overcurrent on the basis of the comparison result.

    摘要翻译： 电动机控制装置具有过电流测试单元，当同步电动机不旋转时，向过电流确定单元发送低于用于过电流确定的参考电压Vref的第一测试电压Vt1和不低于参考电压Vref的第二测试电压Vt2 。 电动机控制装置判定为过电流判定部，根据比较结果判定为第一测试电压Vt1导致过电流，或第二测试电压Vt2基于 比较结果。

    FEEED CHAIN FOR A SYNCHRONOUS ELECTRIC MACHINE, ELECTRIC TRACTION SYSTEM COMPRISING SUCH A CHAIN, AND CONTROL METHOD FOR SUCH A CHAIN
    4.
    发明申请
    FEEED CHAIN FOR A SYNCHRONOUS ELECTRIC MACHINE, ELECTRIC TRACTION SYSTEM COMPRISING SUCH A CHAIN, AND CONTROL METHOD FOR SUCH A CHAIN 有权
    用于同步电机的充电链，包括这种链的电牵引系统以及用于这种链的控制方法

    公开(公告)号：US20130229732A1

    公开(公告)日：2013-09-05

    申请号：US13781067

    申请日：2013-02-28

    申请人： ALSTOM TRANSPORT SA

    发明人： David Cypers ,  Olivier Giacomoni ,  Sebastien Belin ,  Guillaume Desportes

    IPC分类号： H02H3/08

    CPC分类号： H02H3/083 ,  B60L3/0061 ,  B60L3/0069 ,  B60L3/04 ,  B60L11/1803 ,  B60L15/007 ,  B60L2200/26 ,  B60L2220/14 ,  B60L2240/425 ,  H02H7/065 ,  H02H7/0805 ,  H02H9/041 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005

    摘要： A feed chain (16) has M feed outputs (31) for supplying a synchronous electric machine (14) with M phases. The feed chain comprises: a converter (22) for converting a direct input current into a polyphase alternating current; a storage bank; a detector (30) for detecting a short-circuit outside or inside the electric machine (14), a device (26) for insulating the electric machine (14) from overvoltages and/or overcurrents of the polyphase alternating current, and a controller (28) for controlling the converter (22) and the insulating device (26). The feed chain (16) includes short-circuiting device (27) capable of connecting the M power supply outputs (31) to each other, the controller (28) being capable of commanding the short-circuiting device (27) to perform that operation.

    摘要翻译： 进料链（16）具有用于向M相供给同步电机（14）的M个进料输出（31）。 进料链包括：用于将直接输入电流转换成多相交流的转换器（22）; 一个存储银行; 用于检测电机外部或内部短路的检测器（30），用于使电机（14）与多相交流电的过电压和/或过电流绝缘的装置（26），以及控制器 28），用于控制转换器（22）和绝缘装置（26）。 进料链（16）包括能够将M个电源输出（31）彼此连接的短路装置（27），控制器（28）能够命令短路装置（27）执行该操作 。

    Circuit arrangement for the automatic de-excitation of a hysteresis motor
    5.
    发明授权
    Circuit arrangement for the automatic de-excitation of a hysteresis motor 失效
    用于磁滞马达自动去磁的电路装置

    公开(公告)号：US4054943A

    公开(公告)日：1977-10-18

    申请号：US703118

    申请日：1976-07-06

    申请人： Johann Mundt

    发明人： Johann Mundt

    IPC分类号： H02H7/08 ,  H02P3/18

    CPC分类号： H02P3/18 ,  H02H7/0805

    摘要： A circuit arrangement for the automatic de-excitation of a hysteresis motor whose reactive power intake is compensated by capacitors and whose stator windings, which are fed from a three phase mains via a frequency converter, magnetize the rotor with their rotating field and thus produce a permanently magnetic excitation which continues in the rotor in the form of residual magnetic poles even after disconnection of the motor from the three phase mains. A voltage monitor monitors the mains side input to the frequency converter and responds upon interruption of the mains voltage due to malfunction or end of operation. Upon interruption of the mains voltage a capacitor of a buffer circuit in the d.c. intermediate circuit of the frequency converter transfers its stored energy, with decaying voltage, to the stator of the motor via an inverter which forms the output of the frequency converter, and upon response of the voltage monitor, the output frequency f.sub.0 of the inverter is automatically increased by a predetermined amount .DELTA.f, whereby the residual magnetism in the rotor is quenched.

    摘要翻译： 用于自动消磁滞后电动机的电路装置，其无功功率摄取由电容器补偿，并且其定子绕组通过变频器从三相电源馈送，其转子利用其旋转磁场进行磁化，从而产生 即使在马达与三相电源断开连接之后，永磁激励仍以转子中的残余磁极的形式继续。 电压监视器监视变频器的电源侧输入，并由于故障或操作结束而中断电源电压时进行响应。 在电源电压中断时，直流电路中的缓冲电路的电容器。 变频器的中间电路通过形成变频器输出的逆变器将具有衰减电压的存储能量传递给电动机的定子，并且在电压监视器响应时，逆变器的输出频率f0自动 增加预定量的DELTA f，从而使转子中的剩余磁性骤冷。