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    Starting circuit for parallel tuned inverter
    3.
    发明授权
    Starting circuit for parallel tuned inverter 失效
    并联调谐逆变器启动电路

    公开(公告)号：US3599078A

    公开(公告)日：1971-08-10

    申请号：US3599078D

    申请日：1970-05-05

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： PELLY BRIAN R ,  TARJAN MARIO G

    IPC: H02M7/517 ,  H02M7/52

    CPC classification number: H02M7/517

    Abstract: An inverter for supplying a parallel tuned load is disclosed including a plurality of controlled switching devices, such as thyristors, a starting circuit and a control circuit for controlling the switching devices and the starting circuit. The inverter is operative to store energy prior to starting, to utilize the stored energy to excite the tune load into oscillation and to operate normally when the oscillations have reached a sufficient magnitude.

    Abstract translation: 公开了一种用于提供并联调谐负载的逆变器，其包括多个受控开关器件，例如晶闸管，起动电路和用于控制开关器件和起动电路的控制电路。 逆变器用于在启动之前存储能量，以利用所存储的能量将调谐负载激发成振荡并且当振荡已经达到足够的幅度时正常地操作。

    A low-frequency ac reference generator with inherently balanced controllable output voltage
    6.
    发明授权
    A low-frequency ac reference generator with inherently balanced controllable output voltage 失效
    具有完全平衡可控输出电压的低频交流参考发电机

    公开(公告)号：US3585489A

    公开(公告)日：1971-06-15

    申请号：US3585489D

    申请日：1969-06-20

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： PELLY BRIAN R ,  GYUGYI LASZLO

    IPC: H02M5/27 ,  H02M5/22

    CPC classification number: H02M5/271

    Abstract: The invention comprises a low-power variable frequency AC generator with inherently controllable output voltage means and inherent phase reversal capabilities. The AC generator includes switching circuits which are controlled by the output pulses of an adjustable frequency pulse generator to establish the period within which each phase of a polyphase voltage source is in conduction. Additional control circuitry is provided to subdivide the period allotted for each phase conduction into a conduction and nonconduction subperiods to thereby control the amplitude of the output voltage waveform. The adjustable frequency pulse generator is controlled by a DC voltage and the frequency of the output pulses is proportional to this voltage.

    Novel integral firing angle control for converters
    8.
    发明授权
    Novel integral firing angle control for converters 失效
    用于转换器的新型集成式发射角控制

    公开(公告)号：US3585485A

    公开(公告)日：1971-06-15

    申请号：US3585485D

    申请日：1969-06-20

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： GYUGYI LASZLO ,  ROSA JOHN ,  PELLY BRIAN R

    IPC: H02M5/27 ,  H02M5/14 ,  H02M5/30

    CPC classification number: H02M5/271

    Abstract: An improved method of firing angle control of thyristor type converters and particularly cycloconverters each of the component waveforms of the converter as well as the composite output waveform of the converter are summed with a reference waveform and the difference resulting from each of the summations is integrated. The firing angles of the thyristors are established when a predetermined relationship exists between the integral corresponding to the composite output waveform and the integrals corresponding to the component waveforms. A system of control is employed wherein the firing points are determined as a function of the integral of the converter output waveform.

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