COMPOSITE AC-TO-DC POWER CONVERTER USING MIDPOINT METHOD
    11.
    发明申请
    COMPOSITE AC-TO-DC POWER CONVERTER USING MIDPOINT METHOD 有权
    使用中间点方法的复合AC-to-DC电力转换器

    公开(公告)号:US20130094257A1

    公开(公告)日:2013-04-18

    申请号:US13271785

    申请日:2011-10-12

    IPC分类号: H02M7/06

    CPC分类号: H02M1/12 H02M7/08

    摘要: A 24-pulse and 18-pulse composite AC-to-DC converter is a converter using two or more conversion methods in parallel. The converter may include a main rectifier receiving at least a portion of an input AC signal, an autotransformer having an output voltage with lower amplitude than the input AC signal, and a plurality of auxiliary bridge rectifiers, each receiving the output from each leg of the autotransformer. In one embodiment of the invention, the main rectifier may receive a substantial portion of the load current, allowing each of the auxiliary bridge rectifiers to be generally smaller than the main rectifier.

    摘要翻译: 24脉冲和18脉冲复合AC-DC转换器是使用两个或更多个并行转换方法的转换器。 转换器可以包括接收输入AC信号的至少一部分的主整流器,具有比输入的AC信号的幅度更小的输出电压的自耦变压器,以及多个辅助桥式整流器,每个辅助桥式整流器接收来自 自耦变压器 在本发明的一个实施例中,主整流器可以接收大部分负载电流,允许每个辅助桥式整流器通常小于主整流器。

    Sensing armature motion in high-speed solenoids

    公开(公告)号:US20060285265A1

    公开(公告)日:2006-12-21

    申请号:US11153973

    申请日:2005-06-15

    IPC分类号: H01H47/00

    摘要: The invention relates to a technique for discerning a status of an armature of a high-speed solenoid at any time during its operational cycle. In high speed solenoids, motion of an armature does not occur until after a finite and indeterminate lapse of time after application of a driving voltage. In the present invention, a pulsed driving voltage is used to drive the solenoid. A resultant current in a coil of the solenoid exhibits discontinuities in its rate of change when the armature moves. Occurrences of the discontinuities are used to produce control signals and coordinate operation of the solenoids and other controllable events. Occurrence of these discontinuities exactly correlates with armature motion. Consequently, time lapse between application of voltage and motion of the armature becomes inconsequential in design of a control system. In other words, control and coordination of operation of high-speed solenoids can be performed without consideration of uncertainties of the time lapse. In an exemplary illustration, the invention is applied to controlling speed of a turbine generator of a type used in space vehicles. High-speed solenoids are used to control bursts of hydrogen and oxygen flow into a combustion chamber of the turbine generator. Speed control is maintained by controlling a rate and duration of the bursts.

    Valve control method and circuitry for power generation systems
    14.
    发明申请
    Valve control method and circuitry for power generation systems 有权
    发电系统的阀门控制方法和电路

    公开(公告)号:US20060249121A1

    公开(公告)日:2006-11-09

    申请号:US11125904

    申请日:2005-05-09

    IPC分类号: F02M51/00

    摘要: A fail-safe control system for controlling valves in power generation systems is presented. The AC-coupled, rectified signal supplied to one valve is disabled in the event that the other valve fails. This failure is sensed, for example, through the use of power sensing circuitry configured to sense and multiply the voltage and current applied to the valve. Components such as capacitors and transformers are used exclusively such that only AC power (and not DC power) is transferred, ensuring that, in the worst case, the valves are disabled in the event of a failure.

    摘要翻译: 提出了一种用于控制发电系统中的阀门的故障安全控制系统。 在另一个阀故障的情况下,提供给一个阀门的AC耦合整流信号被禁用。 例如,通过使用被配置为感测和乘以施加到阀的电压和电流的功率感测电路来感测该故障。 仅使用诸如电容器和变压器的部件,使得只传输交流电源(而不是直流电源),确保在最坏的情况下,在发生故障时禁用阀门。

    PEEP HOLE SECURITY SYSTEM AND METHOD
    15.
    发明申请

    公开(公告)号:US20170284152A1

    公开(公告)日:2017-10-05

    申请号:US15472817

    申请日:2017-03-29

    IPC分类号: E06B7/30 E06B5/11

    CPC分类号: E06B7/30

    摘要: Peep hole security systems and methods are provided including a threaded optical shaft having a bezel with a security pin extending from an interior surface of the bezel and a threaded interlocking cylinder including an interior flange. An optical shaft hole in a door receives the threaded optical shaft and a security pin hole in the door receives the security pin. The threaded optical shaft is then engaged with the threaded interlocking cylinder until the interior surface of the bezel contact the exterior surface of the door and the interior flange of the threaded interlocking cylinder contacts the interior surface of the door. Attempts to rotate the threaded optical shaft are prevented by the engagement of the security pin with the door.