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    High voltage converter apparatus having a plurality of serially connected controllable semiconductor devices
    12.
    发明授权
    High voltage converter apparatus having a plurality of serially connected controllable semiconductor devices 失效
    具有多个串联连接的可控半导体器件的高电压转换器装置

    公开(公告)号：US3386027A

    公开(公告)日：1968-05-28

    申请号：US48574365

    申请日：1965-09-08

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： KILGORE LEE A ,  SPINDLE HARVEY E

    IPC: H02M1/088 ,  H02M1/092

    CPC classification number: H02M1/092 ,  H02M1/088 ,  H02M7/493

    Abstract: High voltage converter apparatus of the type having a plurality of serially connected, controllable semiconductor devices. The converter apparatus includes means for providing a substantially uniform voltage distribution across the devices, and for maintaining the uniform distribution while the devices are being switched. The converter apparatus also includes firing means for switching the devices, using electromagnetic radiation to trigger the firing means.

    Abstract translation: 该类型的高电压转换器装置具有多个串联连接的可控半导体器件。 转换器装置包括用于在装置之间提供基本均匀的电压分布的装置，并且用于在装置被切换时保持均匀分布。 转换器装置还包括用于使用电磁辐射来切换装置的触发装置来触发击发装置。

    Alternating current motor starting apparatus and method
    16.
    发明授权
    Alternating current motor starting apparatus and method 失效
    交流电动机起动装置和方法

    公开(公告)号：US3667015A

    公开(公告)日：1972-05-30

    申请号：US3667015D

    申请日：1970-06-18

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： GODWIN GURNEY L ,  KILGORE LEE A

    IPC: H02P1/16 ,  H02P1/52

    CPC classification number: H02P1/166

    Abstract: A starting set including an induction machine and a synchronous machine is brought up to speed before connection to the main motor that is to be started. The induction machine may have a number of poles that is a fraction, such as one-half, of the poles of the synchronous machine of the starting set so that the secondary of the wound rotor motor produces a voltage at that fraction of the line frequency at full speed. Alternatively, the induction machine and the synchronous machine of the starting set may have the same or nearly the same number of poles but the machines are concatenated to provide the desired frequency change. After the starting set is up to full speed, the main motor is connected to the secondary of the wound rotor motor and accelerates to a speed near synchronism with the secondary supply. If the main motor is a synchronous machine it is then synchronized with the secondary supply by applying field excitation. Means are then provided to increase the load on the synchronous machine of the starting set. The starting set is then disconnected from the power line so that it will begin to decelerate and, when brought to as low a speed as possible, the main motor will be running at nearly line synchronous speed and can be synchronized with the line.

    Abstract translation: 在连接到要启动的主电动机之前，包括感应电机和同步电机的启动装置被提升。 感应电机可以具有数量的极数，例如起动装置的同步电机的极数的二分之一，使得绕组转子电动机的次级在线频率的一部分产生电压 全速。 或者，起动机的感应电机和同步电机可以具有相同或几乎相同的极数，但是机器被级联以提供期望的频率变化。 起动机组达到全速后，主电机连接到绕线转子电机的次级，加速到与二次电源接近同步的速度。 如果主电机是同步电机，则通过施加励磁励磁与次级电源同步。 然后提供装置以增加起动装置的同步电机上的负载。 然后起动机组与电源线断开，使其开始减速，当达到尽可能低的速度时，主电机将以几乎同步的速度运行并且可以与线路同步。

    Electrical apparatus with frequency controlled load compensation
    17.
    发明授权
    Electrical apparatus with frequency controlled load compensation 失效
    具有频率控制负载补偿的电气设备

    公开(公告)号：US3667012A

    公开(公告)日：1972-05-30

    申请号：US5994970

    申请日：1970-07-31

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： KILGORE LEE A

    IPC: H02K7/02 ,  H02P27/04 ,  H02P27/05

    CPC classification number: H02P27/04 ,  H02P27/05

    Abstract: A wound rotor motor and a flywheel are provided on a shaft with speed control of the motor by frequency control on its secondary applied by means such as a cycloconverter that is responsive to pulsating load conditions on the system. Power flows from the flywheel into the system during periods of high load and into the flywheel during periods of low motoring load or a regenerative load. The invention permits use of equipment, such as large excavators, that have sharply varying loads in their duty cycles, in locations where there are small, otherwise inadequate, power systems.

    Abstract translation: 卷绕的转子电动机和飞轮设置在轴上，通过频率控制在电动机上进行速度控制，其通过对系统上的脉动负载条件的响应的循环变频器等施加。 在高负载期间，电动机从飞轮进入系统，并在低电机负载或再生负载期间进入飞轮。 本发明允许使用诸如大型挖掘机的设备，在其占用周期内具有急剧变化的负载的地方，其中电力系统小而不充分的地方。

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