Self-excited power minimizer/maximizer for switching power converters
and switching motor drive applications
    2.
    发明授权
    Self-excited power minimizer/maximizer for switching power converters and switching motor drive applications 失效
    用于开关电源转换器和开关电机驱动应用的自激式功率最小化器/最大值

    公开(公告)号:US5801519A

    公开(公告)日:1998-09-01

    申请号:US668124

    申请日:1996-06-21

    IPC分类号: G05F1/67 H02M3/156 G05F1/575

    摘要: In any steady-state optimization problem, the output being optimized could be a nonmonotonic function of the controlled variable. Often the output is dependent on the temperature, the load impedance, and other unknown and variable quantities. Thus, it is very useful to have an automatic tuning scheme that will take the system to the desired operating point using only input and output information. The present invention is a generalized tuning scheme that uses the correlation between changes in the input and corresponding changes in the output to tune the operating point. In general terms, the present invention utilizes a correlation function between the controlled variable and a perturbed waveform. When the system reaches the desired operating point, the correlation goes to zero and the system converges. This corresponds to the point at which the derivative of the output with respect to the input is zero. This tuning scheme is appropriate for any tuning problem which has a single maximum or minimum. A variety of tuning problems in power electronics and other areas fall into this category. A tuning scheme based on correlation usually requires an excitation input. The switching action in the controlled circuit perturbs all the states and provides this excitation. Thus, this tuning scheme is appropriate for switching power applications. A preferred embodiment of the present application is used to control a power converter in a solar array application.

    摘要翻译: 在任何稳态优化问题中,被优化的输出可以是受控变量的非单调函数。 通常输出取决于温度,负载阻抗和其他未知和可变量。 因此,使用仅使用输入和输出信息将系统带到期望的操作点的自动调谐方案是非常有用的。 本发明是一种通用调谐方案,其使用输入中的变化与输出的相应变化之间的相关性来调整工作点。 一般来说,本发明利用受控变量和扰动波形之间的相关函数。 当系统达到所需的工作点时,相关性将变为零,系统收敛。 这对应于输出相对于输入的导数为零的点。 该调谐方案适用于具有单个最大值或最小值的任何调谐问题。 电力电子等领域的各种调谐问题属于这一类。 基于相关性的调谐方案通常需要激励输入。 受控电路中的开关动作会干扰所有状态并提供这种激励。 因此,该调谐方案适用于开关电源应用。 本申请的优选实施例用于控制太阳能阵列应用中的功率转换器。

    Refuse container
    3.
    发明授权
    Refuse container 失效
    垃圾箱

    公开(公告)号:US5816591A

    公开(公告)日:1998-10-06

    申请号:US593836

    申请日:1996-01-30

    IPC分类号: B65F1/14 B62B3/12

    CPC分类号: B65F1/1468 Y10S220/908

    摘要: A refuse container constructed of a rigid plastic material comprises a walled storage bin having substantially vertical walls extending upwardly from a bottom wall. The refuse container includes a wheel-bearing axle mounted to the lower rear portion of the storage bin and at least one wheel mounted to a front portion of the storage bin. To prevent downward deflection of the storage bin bottom wall, the refuse container also includes a brace disposed beneath the bottom wall which mounts to the rear axle and the front portion of the storage bin to reinforce the bottom wall.

    摘要翻译: 由刚性塑料材料构成的废物容器包括具有从底壁向上延伸的基本上垂直的墙壁的储存箱。 垃圾箱包括安装在储物箱的下后部的轮轴轴承,以及安装在收纳箱的前部的至少一个轮。 为了防止存储箱底壁的向下偏转,垃圾容器还包括设置在底壁下方的支架,该支架安装到后轴和存储仓的前部以加强底壁。

    Solid evacuated microspheres of hydrogen
    4.
    发明授权
    Solid evacuated microspheres of hydrogen 失效
    固体真空的氢气微球

    公开(公告)号:US4366112A

    公开(公告)日:1982-12-28

    申请号:US698555

    申请日:1976-06-22

    CPC分类号: C01B4/00 C01B3/00

    摘要: A method is provided for producing solid, evacuated microspheres comprised of hydrogen. The spheres are produced by forming a jet of liquid hydrogen and exciting mechanical waves on the jet of appropriate frequency so that the jet breaks up into drops with a bubble formed in each drop by cavitation. The drops are exposed to a pressure less than the vapor pressure of the liquid hydrogen so that the bubble which is formed within each drop expands. The drops which contain bubbles are exposed to an environment having a pressure just below the triple point of liquid hydrogen and they thereby freeze giving solid, evacuated spheres of hydrogen.

    摘要翻译: 提供了一种用于生产由氢组成的固体,真空的微球的方法。 通过在适当频率的射流上形成液态氢射流和激发机械波来产生球,使得射流通过气蚀在每个滴中形成的气泡分解成液滴。 液滴暴露于低于液态氢的蒸汽压力的压力,使得在每个液滴内形成的气泡膨胀。 含有气泡的液滴暴露于具有刚好低于液态氢三重点的压力的环境中,并因此冷冻得到固体的真空的氢气球。

    STORAGE SYSTEMS
    5.
    发明申请
    STORAGE SYSTEMS 有权
    存储系统

    公开(公告)号:US20080302114A1

    公开(公告)日:2008-12-11

    申请号:US11758141

    申请日:2007-06-05

    IPC分类号: F25B25/02 E06B7/22 G05G5/06

    摘要: A system for storing articles can have at least two operating modes. In the first mode, gases are evacuated from the system whereby the articles are stored at a pressure less than the pressure at the exterior of the system. In the second mode, gases are evacuated while the system is open to the admittance of gases from the exterior of the system whereby the articles are ventilated by the admitted gases. The system also can have a third operating mode wherein both the first and second modes are rendered inoperative. The storage system can function so that when the articles are stored in the first mode, gases are intermittently removed from the system whereby the pressure at which the articles are stored is maintained at less than the pressure at the exterior of the system. The storage system can be located in a refrigeration appliance such as a household refrigerator.

    摘要翻译: 用于存储物品的系统可以具有至少两种操作模式。 在第一模式中,气体从系统中排出,从而物品以小于系统外部的压力的压力存储。 在第二模式中,气体被排空,同时系统打开以从系统的外部导入气体,由此物品被允许的气体通风。 该系统还可以具有第三操作模式,其中第一和第二模式都不工作。 存储系统可以起作用,使得当物品以第一模式存储时,气体被间歇地从系统中移出,由此将物品储存的压力保持在系统外部的压力。 存储系统可以位于诸如家用冰箱的制冷设备中。

    Method and means for producing solid evacuated microspheres of hydrogen
    6.
    发明授权
    Method and means for producing solid evacuated microspheres of hydrogen 失效
    用于生产固体真空的氢气微球的方法和装置

    公开(公告)号:US3985841A

    公开(公告)日:1976-10-12

    申请号:US629244

    申请日:1975-11-06

    IPC分类号: C01B3/00 F25J1/00 C01B4/00

    CPC分类号: C01B3/00 Y10S376/916

    摘要: A method is provided for producing solid, evacuated microspheres comprised of hydrogen. The spheres are produced by forming a jet of liquid hydrogen and exciting mechanical waves on the jet of appropriate frequency so that the jet breaks up into drops with a bubble formed in each drop by cavitation. The drops are exposed to a pressure less than the vapor pressure of the liquid hydrogen so that the bubble which is formed within each drop expands. The drops which contain bubbles are exposed to an environment having a pressure just below the triple point of liquid hydrogen and they thereby freeze giving solid, evacuated spheres of hydrogen.

    摘要翻译: 提供了一种用于生产由氢组成的固体,真空的微球的方法。 通过在适当频率的射流上形成液态氢射流和激发机械波来产生球,使得射流通过气蚀在每个滴中形成的气泡分解成液滴。 液滴暴露于低于液态氢的蒸汽压力的压力,使得在每个液滴内形成的气泡膨胀。 含有气泡的液滴暴露于具有刚好低于液态氢三重点的压力的环境中,并因此冷冻得到固体的真空的氢气球。

    Storage systems
    7.
    发明授权
    Storage systems 有权
    存储系统

    公开(公告)号:US08979621B2

    公开(公告)日:2015-03-17

    申请号:US11758141

    申请日:2007-06-05

    摘要: A system for storing articles can have at least two operating modes. In the first mode, gases are evacuated from the system whereby the articles are stored at a pressure less than the pressure at the exterior of the system. In the second mode, gases are evacuated while the system is open to the admittance of gases from the exterior of the system whereby the articles are ventilated by the admitted gases. The system also can have a third operating mode wherein both the first and second modes are rendered inoperative. The storage system can function so that when the articles are stored in the first mode, gases are intermittently removed from the system whereby the pressure at which the articles are stored is maintained at less than the pressure at the exterior of the system. The storage system can be located in a refrigeration appliance such as a household refrigerator.

    摘要翻译: 用于存储物品的系统可以具有至少两种操作模式。 在第一模式中,气体从系统中排出,从而物品以小于系统外部的压力的压力存储。 在第二模式中,气体被排空,同时系统打开以从系统的外部导入气体,由此物品被允许的气体通风。 该系统还可以具有第三操作模式,其中第一和第二模式都不工作。 存储系统可以起作用,使得当物品以第一模式存储时,气体被间歇地从系统中移出,由此将物品储存的压力保持在系统外部的压力。 存储系统可以位于诸如家用冰箱的制冷设备中。