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4 条记录 (耗时 0.029 秒)

    Control apparatus for induction motor
    2.
    发明授权
    Control apparatus for induction motor 失效
    感应电动机控制装置

    公开(公告)号：US5304912A

    公开(公告)日：1994-04-19

    申请号：US947480

    申请日：1992-09-21

    申请人： Kenzo Kajiwara ,  Hiroshi Hamano ,  Hirohisa Yamamura ,  Ryoso Masaki

    发明人： Kenzo Kajiwara ,  Hiroshi Hamano ,  Hirohisa Yamamura ,  Ryoso Masaki

    IPC分类号： B60L3/00 ,  B60L15/02 ,  B60L15/20 ,  H02P21/00 ,  H02P27/04 ,  H02P27/06 ,  H02P1/30 ,  H02H5/04

    CPC分类号： B60L15/025 ,  B60L11/1803 ,  B60L15/2009 ,  B60L3/003 ,  B60L3/0038 ,  B60L3/0061 ,  B60L3/0069 ,  B60L3/0092 ,  B60L3/04 ,  B60L7/26 ,  B60L2220/12 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7275

    摘要： A control apparatus for an induction motor and an electric car propelling motor includes an inverter for supplying a driving current to the induction motor on the basis of a predetermined control signal, a rotational speed sensor for detecting a rotational speed of the induction motor, a V/f control circuit responsive to an input speed command signal for producing a control signal for the inverter, a vector control circuit for producing an inverter control signal on the basis of the speed command signal and the rotational speed signal of the rotational speed sensor, an abnormality detecting circuit for detecting abnormality of the rotational speed sensor. A change-over circuit having inputs supplied with outputs of the V/f control circuit and the vector control circuit, respectively, selects the inverter control signal from the V/f control circuit in response to detection of abnormality of the rotational speed sensor while selecting the inverter control signal supplied from the vector control circuit so long as no abnormality is detected in the rotational speed sensor.

    摘要翻译： 一种用于感应电动机和电动汽车推进电动机的控制装置包括：用于基于预定控制信号向感应电动机提供驱动电流的逆变器，用于检测感应电动机的转速的转速传感器，V / f控制电路，其响应于用于产生用于逆变器的控制信号的输入速度指令信号，用于根据速度指令信号和转速传感器的转速信号产生逆变器控制信号的矢量控制电路， 异常检测电路，用于检测转速传感器的异常。 具有V / f控制电路和矢量控制电路的输出的转换电路的转换电路分别响应于检测到转速传感器的异常而选择来自V / f控制电路的逆变器控制信号，同时选择 只要在转速传感器中没有检测到异常，则从矢量控制电路提供的逆变器控制信号。

    Totally-enclosed type motor
    3.
    发明授权
    Totally-enclosed type motor 失效
    全封闭式电机

    公开(公告)号：US5925947A

    公开(公告)日：1999-07-20

    申请号：US749941

    申请日：1996-11-14

    申请人： Kenzo Kajiwara ,  Kouki Nagai ,  Kenji Takahashi ,  Heikichi Kuwahara

    发明人： Kenzo Kajiwara ,  Kouki Nagai ,  Kenji Takahashi ,  Heikichi Kuwahara

    IPC分类号： H02K5/18 ,  H02K5/20 ,  H02K9/06 ,  H02K9/14 ,  H02K19/06

    CPC分类号： H02K9/18 ,  F28D15/0275 ,  H02K5/18

    摘要： An interior cooling air flow is moved by an interior fan through an inside ventilation passage provided on an inside surface of a stator frame of a totally-enclosed type motor. An exterior cooling air produced by an exterior fan is passed through an outside surface of ventilation passage provided on an outside the stator frame. An inner heat radiation rib is provided in the axial direction on an inner face the inside ventilation passage so that the temperature rise of the motor can be reduced by an improvement in the cooling characteristic. In this way, a compact size totally-enclosed type motor having an improved cooling characteristic is obtained.

    摘要翻译： 内部冷却空气流由内部风扇通过设置在全封闭式电动机的定子框架的内表面上的内部通风通道移动。 由外部风扇产生的外部冷却空气穿过设置在定子框架外侧的通风通道的外表面。 内部散热肋沿轴向设置在内部通风通道的内表面上，从而可以通过改善冷却特性来降低电动机的温升。 以这种方式，获得具有改进的冷却特性的紧凑型全封闭式电动机。

    Bearing device for horizontal shaft type rotating machine
    4.
    发明授权
    Bearing device for horizontal shaft type rotating machine 失效
    卧式卧式旋转机轴承装置

    公开(公告)号：US5139349A

    公开(公告)日：1992-08-18

    申请号：US771107

    申请日：1991-10-04

    申请人： Masaaki Nakano ,  Kazuhiko Kawaike ,  Eiichi Okuyama ,  Kenzo Kajiwara

    发明人： Masaaki Nakano ,  Kazuhiko Kawaike ,  Eiichi Okuyama ,  Kenzo Kajiwara

    IPC分类号： F16C33/10 ,  F16N7/18 ,  F16N39/00

    CPC分类号： F16C33/103 ,  F16C33/10 ,  F16N39/002 ,  F16N7/18

    摘要： A bearing device for a horizontal shaft type rotating machine includes an oil tank formed at the lower portion of the bearing box for storing lubricant oil for the bearing, the oil tank being divided by a bearing support plate between an oil feeding chamber and an oil collecting chamber; an oil feeding apparatus which pumps up the lubricant oil in the oil feeding chamber and feeds the lubricant oil onto the bearing; and a pair of diffusion flow passages; each of the pair of diffusion flow passages being formed along the inner wall of the oil tank and connects the oil collecting chamber with the oil feeding chamber; each of the diffusion flow passages permitting diffusion and movement of the lubricant oil from the oil collecting chamber to the oil feeding chamber. Each of the diffusion flow passages including a baffle chamber and a narrow gap flow passage downstream of the baffle chamber and having a smaller cross section flow passage area than the baffle chamber and the upper portion of the baffle chamber being open to the air, whereby air bubbles contained in the collected high temperature lubricant oil are removed at an early stage of their return travel from the oil collecting chamber to the oil feeding chamber.

    摘要翻译： 一种用于水平轴式旋转机械的轴承装置，包括形成在用于轴承的润滑油的轴承箱的下部的油箱，油箱由供油室和集油器之间的轴承支撑板分隔开 房间 一个给油装置，其将润滑油泵送在给油室中并将润滑油供给到轴承上; 和一对扩散流路; 所述一对扩散流路沿着所述油箱的内壁形成，并将所述集油室与所述给油室连接; 每个扩散流通道允许润滑油从集油室扩散和移动到给油室。 每个扩散流通道包括挡板室和在挡板室下游的窄间隙流动通道，并且具有比挡板室更小的横截面流动通道面积，并且挡板室的上部向空气敞开，由此空气 收集的高温润滑油中的气泡在从油收集室返回给油室的返回的早期阶段被除去。