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    Dual level plugging circuit
    131.
    发明授权
    Dual level plugging circuit 失效
    双电平插电路

    公开(公告)号：US3854076A

    公开(公告)日：1974-12-10

    申请号：US41680573

    申请日：1973-11-19

    Applicant: GEN ELECTRIC

    Inventor： LAMBERT J

    IPC: B60L7/00 ,  H02P3/10 ,  H02P7/29 ,  H02P5/16

    CPC classification number: H02P3/10

    Abstract: A circuit for selectively diminishing the conductive interval of a pulse control circuit during plugging of a d.c. motor drive system. A thyristor is utilized to bypass a portion of an inductive winding in the charge reversal circuit of a commutating capacitor. The voltage on the capacitor then reverses itself in a shorter than normal time to allow a more rapid commutation of a main thyristor.

    Abstract translation: 用于选择性地减小脉冲控制电路的导通间隔的电路。 电机驱动系统。 利用晶闸管绕过整流电容器的电荷反向电路中的一部分感应绕组。 电容器上的电压然后在比正常时间短的时间内自身反转，以允许主晶闸管的更快速的换向。

    Direct current power control circuit
    132.
    发明授权
    Direct current power control circuit 失效
    直流电源控制电路

    公开(公告)号：US3777237A

    公开(公告)日：1973-12-04

    申请号：US3777237D

    申请日：1972-03-03

    Applicant: GEN ELECTRIC

    Inventor： ANDERSON A

    IPC: H02P3/08 ,  B60L15/28 ,  G05F1/56 ,  H02M1/08 ,  H02M3/135 ,  H02M3/137 ,  H02P3/10 ,  H02P7/29 ,  H02P5/12

    CPC classification number: H02P3/10 ,  H02M3/137 ,  Y02T10/7258 ,  Y10S388/919

    Abstract: A control circuit for controlling the effective power to a load from a power source of substantially constant direct current voltage in which the amount of effective power delivered to the load is controlled by controlling the percentage of time that the load and the power source are interconnected. Included within the system is a switching device preferably of the solid-state type which is alternately placed in the conductive and nonconductive state to vary the percentage of time. Two forms are included, the first being essentially a low power form and the second a dual level type of control system in which it is possible to alternate selectively between two modes of operation to operate the control circuit in a high and low power mode. Also provided is the application of the dual mode system to a direct current motor control system for providing what in the art is known as plugging.

    Abstract translation: 一种控制电路，用于通过控制负载和电源互连的时间百分比来控制来自基本上恒定的直流电压的电源对负载的有效功率，其中传送到负载的有效功率的量被控制。 系统中包括优选为固态的开关器件，其交替地置于导电和非导通状态以改变时间百分比。 包括两种形式，第一种是基本上是低功率形式，第二种是双电平型控制系统，其中可以选择性地在两种操作模式之间交替以在高功率和低功率模式下操作控制电路。 还提供了将双模式系统应用于直流电动机控制系统，用于提供本领域中已知的堵塞。

    Solenoid actuated switching device for electric motor control circuit
    133.
    发明授权
    Solenoid actuated switching device for electric motor control circuit 失效
    用于电机控制电路的电磁阀动作开关装置

    公开(公告)号：US3739309A

    公开(公告)日：1973-06-12

    申请号：US3739309D

    申请日：1971-02-01

    Applicant: WESTRAN CORP

    Inventor： DALTON T

    IPC: H02P3/10 ,  H02P3/12 ,  H02P7/00 ,  H02P23/00 ,  H01H50/18 ,  H01H3/42 ,  H01H50/64

    CPC classification number: H02P3/12 ,  H02P3/10 ,  H02P7/03 ,  H02P23/24

    Abstract: A solenoid actuated switching device for an electric motor control circuit for selectively connecting and disconnecting a pair of input terminals of an armature of an electric motor to a source of electrical power to selectively brake and reverse the rotation of the armature. Two solenoids move against respective sides of a pivoted arm member thereby actuating one of two switches, each having fixed and movable contacts. The first fixed contact is connected in circuit only after the first solenoid has been deenergized to retract the armature thereof, and the second fixed contact is connected only after the second solenoid has been deenergized to retract its armature.

    Abstract translation: 一种用于电动机控制电路的电磁致动开关装置，用于选择性地将电动机的电枢的一对输入端子连接到电源，以选择性地制动和反转电枢的旋转。 两个螺线管相对于枢转的臂构件的相应侧移动，从而致动两个开关中的一个，每个开关具有固定和可移动的触点。 第一固定触头仅在第一螺线管已经被断电以使其电枢缩回之后被连接在电路中，并且第二固定触点仅在第二螺线管已经断电以使其电枢缩回之后连接。

    Scr motor speed control with plug sensing circuit
    134.
    发明授权
    Scr motor speed control with plug sensing circuit 失效
    SCR电动机速度控制与插头感应电路

    公开(公告)号：US3710216A

    公开(公告)日：1973-01-09

    申请号：US3710216D

    申请日：1971-04-06

    Applicant: EATON CORP

    Inventor： SMITH A

    IPC: H02P7/29 ,  H02P3/10 ,  H02P5/16

    CPC classification number: H02P7/29

    Abstract: A control system for controlling energy directed from a power source to a DC variable speed motor includes a main SCR, series connected with the motor, an oscillator, a sawtooth generator, a reference operational amplifier, and a firing pulse generator. The output of the sawtooth generator is summed with the output of the reference operational amplifier and directed to the firing pulse generator. When the summed output of the reference operational amplifier and the sawtooth generator exceeds the threshold voltage of the firing pulse generator, the firing pulse generator will fire to effect conduction of the main SCR to direct energy to the motor. A commutating circuit is provided for turning the main SCR off during each cycle of the oscillator. The commutating circuit includes a secondary SCR and a LC resonant circuit both of which are parallel connected to the main SCR. The LC resonant circuit acts to reverse bias the main SCR upon conduction of the secondary SCR. A regulated power supply is also provided to energize the various components of the control system. The regulated power supply includes a negative power supply which comprises an astable multivibrator and a diodecapacitor matrix for directly converting a positive voltage to a regulated negative voltage.

    Abstract translation: 用于控制从电源向DC变速电动机引导的能量的控制系统包括与电动机连接的主SCR，振荡器，锯齿波发生器，参考运算放大器和点火脉冲发生器。 锯齿波发生器的输出与参考运算放大器的输出相加，并被引导到点火脉冲发生器。 当参考运算放大器和锯齿波发生器的相加输出超过点火脉冲发生器的阈值电压时，点火脉冲发生器将点亮，以实现主SCR的导通以将能量引导到电动机。 提供换向电路，用于在振荡器的每个周期期间关断主SCR。 整流电路包括二级SCR和LC谐振电路，它们均并联连接到主SCR。 LC谐振电路用于在二次SCR导通时反向偏置主SCR。 还提供稳压电源以激励控制系统的各个部件。 调节电源包括负电源，其包括用于将正电压直接转换为调节负电压的非稳态多谐振荡器和二极管 - 电容矩阵。

    System to control plugging of vehicle direct current motor
    135.
    发明授权
    System to control plugging of vehicle direct current motor 失效
    控制车辆直流电动机的控制系统

    公开(公告)号：US3694721A

    公开(公告)日：1972-09-26

    申请号：US3694721D

    申请日：1971-08-31

    Applicant: ALLIS CHALMERS

    Inventor： HENRY LUKE F

    IPC: H02P3/10 ,  H02P7/29

    CPC classification number: H02P3/10 ,  H02P7/29

    Abstract: A soft-plugging control for a DC traction motor has a speed rheostat which regulates the duty cycle of variable width pulses applied by a power switch from a battery to the motor armature, means for algebraically summing the voltage across the power switch and the armature and means for decreasing the repetition rate of the pulses when said algebraic sum decreases below a predetermined magnitude as the armature voltage decays when said armature reverses direction.

    Electromagnetic motor reversing control
    136.
    发明授权
    Electromagnetic motor reversing control 失效
    电动马达反转控制

    公开(公告)号：US3639821A

    公开(公告)日：1972-02-01

    申请号：US3639821D

    申请日：1970-09-28

    Applicant: COLLINS RADIO CO

    Inventor： BYERS CHARLES A ,  BECKER ROBERT A

    IPC: G05D3/14 ,  H02P3/10

    CPC classification number: G05D3/1418

    Abstract: A motor control means for cyclically reversing an electric motor. The motor control includes an electromagnetic switch comprising a transformer having an E-shaped core and a centertapped secondary winding, together with a pair of magnetic pole pieces carried by a rotatable shaft mounted in proximity with the transformer and driven by the motor to alternately cause the respective pole pieces to differentially influence the current flow through respective halves of the secondary winding and thereby produce a signal to effect reversal of the motor.

    Abstract translation: 一种电动机控制装置，用于使电动机循环地反向。 电动机控制包括电磁开关，其包括具有E形芯和中心抽头次级绕组的变压器，以及一对磁极片，其由安装在变压器附近并由电动机交替驱动的可旋转轴承载 导致相应的极片差别地影响通过次级绕组的相应半部的电流，从而产生信号以实现电动机的反转。

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