Washing method
    1.
    发明授权
    Washing method 失效
    洗涤方法

    公开(公告)号:US5334258A

    公开(公告)日:1994-08-02

    申请号:US913047

    申请日:1992-07-14

    IPC分类号: B08B3/04 B08B3/08

    CPC分类号: B08B3/04

    摘要: Disclosed is a washing method in which parts and products are washed free of residual smudges without using fleon-family solvents. The method of washing members such as parts or products comprises a first degreasing step for degreasing in nonaqueous liquid the members to be washed after worked, a second degreasing step for degreasing the members being washed in an aqueous liquid which dissolves the nonaqueous liquid, a finish washing step for washing in the aqueous liquid, a rinsing step, and a drying step, wherein the drying step is performed in a plurality of pure water baths, the temperature of a last pure water bath is established to a range of 70.degree. to 85.degree. C., and the washed members are taken out from the pure water bath for drying the surfaces thereof.Also, the washing method is disclosed in which pure water in a plurality of the pure water baths has temperature gradient in the sequence of washing steps.Furthermore, the washing method is disclosed in which the speed of taking out the washed members from the last pure water bath is established so as to be in inverse proportion to the surface area of the washed member.

    摘要翻译: 公开了一种洗涤方法,其中部分和产品被洗涤而没有残留的污迹而不使用脉络醇溶剂。 清洗部件或制品等部件的方法包括第一脱脂步骤,用于在非水液体中脱脂,加工后待清洗的部件,第二脱脂步骤,用于对在非水溶液中溶解的水性液体中洗涤的部件进行脱脂, 在水性液体中洗涤的洗涤步骤,漂洗步骤和干燥步骤,其中干燥步骤在多个纯水浴中进行,最后一个纯水浴的温度建立在70℃至85℃的范围内 并且将洗涤过的构件从纯水浴中取出以干燥其表面。 此外,公开了一种洗涤方法,其中多个纯水浴中的纯水按洗涤步骤的顺序具有温度梯度。 此外,公开了洗涤方法,其中从最后一个纯水浴中取出洗涤的部件的速度被建立成与洗涤部件的表面积成反比。

    Controller for electric vehicles
    2.
    发明授权
    Controller for electric vehicles 有权
    电动车控制器

    公开(公告)号:US06274998B1

    公开(公告)日:2001-08-14

    申请号:US09508856

    申请日:2000-03-17

    IPC分类号: H02P534

    摘要: A controller for electric vehicles comprising a vector control inverter for controlling motors, which drive wheels of the electric vehicles, by dividing the primary current of the motors into an exciting current component and a torque current component, and controlling respective of the current components based on a respectively designated command, characterized in further comprising a dectector for detecting a wheel velocity (including a rotor frequency of the motor proportional to the wheel velocity), a detector for detecting slipping and skidding of the wheel based on a differential value (a changing rate with time) of the detected wheel velocity, a dectector for detecting re-adhesion of the wheel based on the differential value and a twice differential value of the detected wheel velocity, and an adjuster for adjusting the designated command for the torque current component in response to the detectors.

    摘要翻译: 一种用于电动车辆的控制器,包括用于通过将电动机的初级电流分成励磁电流分量和转矩电流分量来控制电动车辆的驱动轮的电动机的矢量控制变换器,并且基于 分别指定的命令,其特征在于还包括用于检测车轮速度(包括与车轮速度成比例的电动机的转子频率)的检测器,用于根据差分值(变化率)检测车轮的滑动和打滑的检测器 检测到的车轮速度的时间),用于根据微分值检测车轮重新附着的检测器和检测到的车轮速度的两倍差值;以及调节器,用于响应于调整转矩电流分量的指定命令 到检测器。

    Guard system for inverter apparatus
    3.
    发明授权
    Guard system for inverter apparatus 失效
    逆变器装置保护系统

    公开(公告)号:US4672525A

    公开(公告)日:1987-06-09

    申请号:US824551

    申请日:1986-01-23

    IPC分类号: H02M7/515 H02M7/527 H02H7/122

    CPC分类号: H02M7/527 H02M1/32

    摘要: An inverter using gate turn-off thyristors (GTOs) is controlled by means of pulse width modulation (PWM) to control the speed of an induction motor. If the current flowing through the induction motor becomes an overcurrent which can still be cut off by the GTOs, a gate off signal is supplied to respective GTOs to interrupt the overcurrent. If any one of arms respectively corresponding to phases is short-circuited, a gate on signal is supplied to all GTOs to distribute the short circuit current among the arms, and the main circuit is interrupted by a high-speed breaker. At this time, a simultaneous gate on signal is given priority. If the simultaneous gate on signal is present, a simultaneous gate off signal is disabled. Owing to this configuration, destruction of the GTOs due to consecutive guard operation can be prevented.

    摘要翻译: 使用栅极截止晶闸管(GTO)的逆变器通过脉宽调制(PWM)来控制,以控制感应电机的速度。 如果流过感应电动机的电流成为仍然被GTO断开的过电流,则向相应的GTO提供栅极截止信号以中断过电流。 如果分别对应于相位的臂中的任何一个短路,则向所有GTO提供栅极导通信号以在臂之间分配短路电流,并且主电路被高速断路器中断。 此时,同时门开通信号被优先考虑。 如果存在同时门极导通信号,则禁止同时门极关闭信号。 由于这种配置,可以防止由于连续的保护操作导致的GTO的破坏。

    Gate turn-off thyristor
    4.
    发明授权
    Gate turn-off thyristor 失效
    门极关断晶闸管

    公开(公告)号:US4626888A

    公开(公告)日:1986-12-02

    申请号:US550586

    申请日:1983-11-10

    摘要: In accordance with the present invention, a plurality of strip-shaped emitter layers on the cathode side are radially arranged on one main surface of the semiconductor substrate while forming a plurality of rings. A gate electrode is in ohmic contact with a part of a base layer which surrounds and is adjacent to each of said emitter layers on the cathode side. Between rings formed by said emitter layers on the cathode side, a ring-shaped gate collecting electrode is provided to be connected to said gate electrode. The gate collecting electrode is provided at a position to balance the potential differences produced by gate currents respectively corresponding to inside and outside of said gate collecting electrode.

    摘要翻译: 根据本发明,阴极侧的多个条状发射极层径向地布置在半导体衬底的一个主表面上,同时形成多个环。 栅电极与基极层的一部分欧姆接触,该基极层围绕并邻近阴极侧的每个发射极层。 在由阴极侧上的发射极层形成的环之间,设置有环形栅极集电极,以连接到所述栅电极。 栅极集电极设置在平衡由分别对应于所述栅极集电极的内部和外部的栅极电流产生的电位差的位置。

    Control apparatus for electric railcar
    5.
    发明申请
    Control apparatus for electric railcar 有权
    电动车控制装置

    公开(公告)号:US20050184693A1

    公开(公告)日:2005-08-25

    申请号:US11107737

    申请日:2005-04-18

    CPC分类号: B60L9/22 B60L2200/26

    摘要: A control apparatus for an electric railcar that provides control so that when rotational speed of a motor decreases below a required value, torque of the motor will decrease at a required rate of change, a current limiter for limiting a torque current command “(A)Iqp” output from a current command arithmetic unit is provided to ensure that when the rotational speed of the motor decreases below the required value, the torque current command will be limited to a command value “(B)Iqp” smaller than that command value, and to ensure that a carrier frequency at which PWM signals are created when switching elements of the electric power converter are controlled by carrier generator is controlled to become lower than a carrier frequency existing when the rotational speed of the motor decreases below the required value.

    摘要翻译: 一种用于电气轨道车辆的控制装置,其提供控制,使得当电动机的转速降低到所需值以下时,电动机的转矩将以所需的变化幅度减小,用于限制转矩电流指令“(A)”的限流器, 提供从电流指令运算单元输出的“Iqp”,以确保当电动机的转速降低到所需值以下时,转矩电流指令将被限制为小于该指令值的指令值“(B)Iqp” 并且确保当电力转换器的开关元件由载波发生器控制时产生PWM信号的载波频率被控制成低于当电动机的转速降低到所需值以下时存在的载波频率。

    DC apparatus and vehicle using the same
    6.
    发明授权
    DC apparatus and vehicle using the same 有权
    直流设备和使用其的车辆

    公开(公告)号:US06633495B2

    公开(公告)日:2003-10-14

    申请号:US10101529

    申请日:2002-03-20

    IPC分类号: H02M324

    CPC分类号: H02M1/143

    摘要: The voltage applied to a power converter is detected by a voltage detector, a function generator produces a voltage proportional to this detected voltage, and a high-pass filter detects an AC component superimposed on the voltage. An adder adds a bias voltage to this AC component, and an adder adds the output from the adder and the output from the function generator. The output from the adder is compared with a triangular wave produced from a rectangular wave generator, and a switching element is controlled to make switching operation according to the compared result. When a DC current is decreased by the AC component, a resistance current Ib is increased so that the AC components superimposed on the current and resistance current can be cancelled out.

    摘要翻译: 施加到功率转换器的电压由电压检测器检测,功能发生器产生与该检测电压成比例的电压,高通滤波器检测叠加在电压上的AC分量。 加法器向该AC分量加上偏置电压,加法器将来自加法器的输出和来自函数发生器的输出相加。 将来自加法器的输出与由矩形波发生器产生的三角波进行比较,并且根据比较结果控制开关元件进行开关操作。 当直流电流被交流分量降低时,电阻电流Ib增加,从而可以消除叠加在电流和电阻电流上的交流分量。

    Free wheel diode arrangement for neutral point clamped electric power
conversion apparatus
    10.
    发明授权
    Free wheel diode arrangement for neutral point clamped electric power conversion apparatus 失效
    用于中性点钳位电力转换装置的自由轮二极管装置

    公开(公告)号:US5638266A

    公开(公告)日:1997-06-10

    申请号:US401679

    申请日:1995-03-10

    IPC分类号: B60L9/28 H02M7/497 H02M7/5387

    摘要: The invention is directed to a neutral point clamped electric power conversion apparatus having four semiconductor switching elements connected in series. The capacity of outer free wheel diodes connected in reverse parallel with outer semiconductor switching elements are increased compared to that of inner free wheel diodes, thereby minimizing, an imbalance in losses between the inner and the outer free wheel diodes.

    摘要翻译: 本发明涉及一种具有串联连接的四个半导体开关元件的中性点钳位电力转换装置。 与内部剩余二极管相比,与外半导体开关元件反向并联连接的外部续流二极管的容量增加,从而最小化内部和外部剩余轮二极管之间的损耗不平衡。