公开(公告)号：US3581172A

公开(公告)日：1971-05-25

申请号：US3581172D

申请日：1969-04-01

申请人： HITACHI LTD

发明人： TSUBOI TAKASHI ,  NARITA HIROSHI

IPC分类号： H02P3/12 ,  H02P1/20

CPC分类号： H02P3/12

摘要： A control system for electric motors effecting variation of the electric motor current in a step-by-step operation in successive stages, second impedance control means for controlling the variation of said current by said first means in a linear fashion by providing an impedance varying from a minimum value to a maximum value during each stage of operation and control means for effecting a transition of first means from one stage to the next in response to detection of said motor current reaching a predetermined value and simultaneously changing the impedance of said second means to said maximum value.

公开(公告)号：US3913493A

公开(公告)日：1975-10-21

申请号：US41595273

申请日：1973-11-15

申请人： HITACHI LTD

发明人： MAKI NAOKI ,  OKUDA HIRONORI ,  TSUBOI TAKASHI ,  MIYASHITA TAKAO ,  TAKAHASHI TAKAO

IPC分类号： B60L13/10 ,  H02K41/03 ,  B61B13/08

CPC分类号： B60L13/10 ,  B60L2200/26 ,  B60L2220/14 ,  Y10S505/905

摘要： A system for propelling a train by a linear synchronous motor comprising a group of propelling coils disposed in pairs along a train track on the ground on opposite sides of the center line of the train track and opposite to field coils mounted on the vehicle with a predetermined gap defined therebetween, said coil pairs in the propelling coil group being connected in parallel respectively to constitute a group of short-circuited coil units which interact electro-magnetically with the field coils to stabilize the vehicle against rolling movement.

摘要翻译： 一种用于通过线性同步电动机来驱动火车的系统，包括一组推进线圈，沿着列车轨道在列车轨道上成对地布置在列车轨道的中心线的相对侧上，并与安装在车辆上的场线圈相对， 间隙限定在推进线圈组中的所述线圈对分别并联连接以构成一组短路线圈单元，其与磁场线圈电磁相互作用以使车辆不受滚动运动的影响。

公开(公告)号：US3686548A

公开(公告)日：1972-08-22

申请号：US3686548D

申请日：1969-09-30

申请人： HITACHI LTD

发明人： ONODA YOSHIMITSU ,  TSUBOI TAKASHI

IPC分类号： B60L9/00 ,  H02K29/00 ,  H02K41/00 ,  H02P7/00 ,  H02P7/24 ,  H02P23/03 ,  H02P27/06

CPC分类号： H02P27/06 ,  H02P23/03 ,  H02P27/047

摘要： A motor system having a thyristor commutator which is so designed that poly phase windings mounted on a stator are energized by a poly phase alternating current supplied from an optional electric source and converted by switching means, such as an inverter, and poly phase windings mounted on a rotor are excited by a given frequency poly phase alternating current converted by a frequency changer, such as a cyclo-converter.

摘要翻译： 一种具有可控硅整流子的电动机系统，其设计成使得安装在定子上的多相绕组由从可选电源提供并由开关装置（例如逆变器）提供的多相交流电激励，并且多相绕组安装在 通过由诸如循环变换器的变频器转换的给定的频率多相交流电来激励转子。