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    Circuit for dissipating the potential induced in each phase winding of a cycloconverter operated motor upon termination of conduction therethrough
    2.
    发明授权
    Circuit for dissipating the potential induced in each phase winding of a cycloconverter operated motor upon termination of conduction therethrough 失效
    用于消除在终止运行的电动机的每个相位绕组中产生的潜在电流的电路

    公开(公告)号：US3684935A

    公开(公告)日：1972-08-15

    申请号：US3684935D

    申请日：1971-07-02

    Applicant: GEN MOTORS CORP

    Inventor： SAWYER ELBERT M ,  HAAS WILLIAM M

    IPC: H02M5/27 ,  H02P27/16 ,  H02P5/40

    CPC classification number: H02M5/271 ,  H02P27/16

    Abstract: A circuit for dissipating the potential induced in each phase winding of a cycloconverter operated alternating current motor upon the termination of conduction therethrough. The anodecathode electrodes of each of two oppositely poled silicon controlled rectifiers are connected in series with a respective parallel combination of a resistor and a capacitor across each phase winding of the motor. When conduction through each phase winding in either direction is to be terminated, a gate signal is produced and applied across the gate-cathode electrodes of the one of the silicon controlled rectifiers connected across the phase winding through which conduction is to be terminated which is forward poled by the potential induced in the phase winding as the magnitude of phase current flow therethrough decreases.

    Abstract translation: 一种电路，用于消除在循环转换器操作的交流电动机的每个相绕组中在通过其传导的终止之后诱发的电位。 两个相对极化的可控硅整流器中的每一个的阳极 - 阴极电极与电动机的每个相绕组上的电阻器和电容器的相应并联组合串联连接。 当要断开任一方向的每个相绕组的导通时，产生栅极信号并施加在跨过要绕过的相绕组的一个可控硅整流器的栅极 - 由于相流电流流过的幅度减小，在相绕组中诱发的电位极化。

    Cycloconverter silicon controlled rectifier gate-cathode circuit signal and power system
    6.
    发明授权
    Cycloconverter silicon controlled rectifier gate-cathode circuit signal and power system 失效

    公开(公告)号：US3702429A

    公开(公告)日：1972-11-07

    申请号：US3702429D

    申请日：1971-11-30

    Applicant: GEN MOTORS CORP

    Inventor： SAWYER ELBERT M ,  BROWN JOSEPH M ,  MUNDEN CURTIS D ,  GILES KENNETH E

    IPC: H02P27/02 ,  H02P5/40

    CPC classification number: H02P27/02

    Abstract: A system for producing properly timed gate signals and gatecathode power for the silicon controlled rectifiers of a cycloconverter network, through which the phase windings of a three-phase alternating current motor are cyclically energized from an alternating current supply potential alternator, having two groups of three silicon controlled rectifiers for each motor phase winding. The properly timed gate signals are produced by a rotor position sensor including six circumferentially arranged phototransistors, each of which corresponds to a group of cycloconverter silicon controlled rectifiers, an axially aligned and spaced light-emitting diode corresponding to each phototransistor, a shutter disposed therebetween and rotated by the motor rotor of a configuration such that pairs of phototransistors are alternately exposed to and masked from the corresponding light-emitting diodes and three gate signal lightemitting diodes connected in series with each phototransistor across a direct current potential source. When any pair of phototransistors is exposed to the corresponding light-emitting diodes, a circuit is completed for the three gate signal lightemitting diodes in series with each. Each gate signal lightemitting diode produces a gate signal for a respective silicon controlled rectifier of the group to which the phototransistor with which it is connected in series corresponds. The gatecathode circuit of each cycloconverter silicon controlled rectifier of each group is transformer coupled to a different phase output winding of a gate power three-phase alternating current alternator, mechanically coupled to and operated by the alternating current supply potential alternator, which produces a gate-cathode power potential which leads the alternating current supply potential alternator potential by a selected electrical angle. Included in each cycloconverter silicon controlled rectifier gate-cathode circuit are a light actuated silicon controlled rectifier, optically coupled to a corresponding gate signal light-emitting diode, and a gate-cathode circuit silicon controlled rectifier which are triggered conductive, respectively, by the light emitted by the corresponding gate signal light-emitting diode and the output signal of a zero crossover switch in the same gate-cathode circuit to complete the gate-cathode circuit for the corresponding cycloconverter silicon controlled rectifier.

    Cycloconverter silicon controlled rectifier gate signal delay circuit
    7.
    发明授权
    Cycloconverter silicon controlled rectifier gate signal delay circuit 失效
    CYCLOCONVERTER SILICON控制整流器门信号延迟电路

    公开(公告)号：US3689813A

    公开(公告)日：1972-09-05

    申请号：US3689813D

    申请日：1971-07-13

    Applicant: GEN MOTORS CORP

    Inventor： SAWYER ELBERT M ,  BOURBEAU FRANK J

    IPC: H02M5/27 ,  H02P27/16 ,  H02P5/40

    CPC classification number: H02M5/271 ,  H02P27/16

    Abstract: A cycloconverter silicon controlled rectifier gate signal delay circuit for delaying the application of cycloconverter silicon controlled rectifier gate signals to the cycloconverter silicon controlled rectifiers next to be gated conductive to energize, in the opposite direction, a phase winding of a cycloconverter operated motor through which conduction has just been terminated. The anode-cathode electrodes of each of two oppositely poled silicon controlled rectifiers are connected in series with a coil and the parallel combination of a resistor and a capacitor across each phase winding of the motor. When conduction is to be terminated through a phase winding, the silicon controlled rectifier connected thereacross which is forward poled by the potential induced in the phase winding as the magnitude of phase current flow therethrough decreases is gated conductive. Respective magnetically operated reed-type switches, magnetically coupled to the magnetic field produced by the flow of current through the coil connected in series with the conducting silicon controlled rectifier, operate to delay the application of the cycloconverter gate signal to each of the cycloconverter silicon controlled rectifiers next to be gated conductive to energize the same phase winding of the motor in the opposite direction until phase current has reduced to substantially zero.

    Abstract translation: 循环变换器可控硅整流栅信号延迟电路，用于延迟将循环转换器可硅控整流栅信号施加到旁路转换器可控硅整流器，旁路将被选通导电，以在相反方向上激励循环转换器操作的电动机的相绕组， 刚刚被终止。 两个相对极化的可控硅整流器中的每一个的阳极 - 阴极电极与线圈串联，并且在电动机的每个相绕组上并联一个电阻器和电容器。 当通过相绕组来导通时，被控制的可控硅整流器通过在相绕组中感应的电位正向极化，随着相电流流过其中的电流的下降，导通。 磁耦合到通过与导电硅控整流器串联连接的线圈的电流产生的磁场的磁操作簧片开关的作用是延迟将循环换流器门信号应用于每个循环换流器硅控制 旁路导通的整流器以相反的方向激励电动机的相同相绕组，直到相电流已经减小到基本为零。

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