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    • 36. 发明授权
    • Methods and systems for phase current reconstruction of AC drive systems
    • 交流传动系统相电流重建的方法和系统
    • US08248829B2
    • 2012-08-21
    • US12772199
    • 2010-05-01
    • Babak FahimiWei Jiang
    • Babak FahimiWei Jiang
    • H02M7/44H02M7/5387
    • H02M7/53873H02M2001/0009
    • Methods and systems for phase current reconstruction are disclosed. An example method comprises: sampling a current from a power stage comprising: three phase legs, a current sensor to measure a dc-link current, and three more current sensors configured to measure three summations of currents for the power stage, storing the sampled current into a current stack if the sampled current comes from a survived sensor and is one of the phase currents from the switching state in the state stack, and reconstructing an unknown phase current by using the previously stored currents along with the sampled current to calculate the unknown phase current. Other embodiments are described and claimed.
    • 公开了用于相电流重建的方法和系统。 示例性方法包括:从功率级对电流进行采样,包括:三相支路,用于测量直流链路电流的电流传感器,以及三个电流传感器,其被配置为测量用于功率级的三个电流相加,存储采样电流 如果采样电流来自一个存活的传感器,并且是状态堆叠中来自开关状态的相电流之一,并且通过使用先前存储的电流以及采样电流来重构未知的相电流来计算未知数 相电流。 描述和要求保护其他实施例。
    • 40. 发明授权
    • System and method for modular repair of pipe leaks
    • 管道泄漏模块化修复的系统和方法
    • US08210210B2
    • 2012-07-03
    • US12829268
    • 2010-07-01
    • John W. ClarkJerry Robb
    • John W. ClarkJerry Robb
    • F16L55/16
    • F16L55/18F16L55/168F16L55/179Y10T137/0441Y10T137/598
    • A method and apparatus for modular pipe repair, the method comprising attaching two enclosure halves over a leak in a pipe to assemble a first repair enclosure and determining if another repair enclosure is needed for another leak in the pipe. If another repair enclosure is needed, the method further comprises drilling in the first repair enclosure drill hole passages in selected angled grooves thereof to connect to a primary groove in the enclosure, attaching a second repair enclosure to pipe, drilling in the second repair enclosure drill hole passages in selected angled grooves thereof to connect to the primary groove in the second enclosure, and attaching hub clamps to the first repair enclosure and the second repair enclosure. Finally, the method comprises injecting sealant into a plurality of injection points to fill the selected angled grooves and the primary grooves in the repair enclosures.
    • 一种用于模块化管道修复的方法和装置,所述方法包括在管道中的泄漏物上附接两个外壳半部以组装第一修复外壳并且确定是否需要另一个维修外壳以用于管道中的另一泄漏。 如果需要另一个修理外壳,则该方法还包括在其选定的成角度的槽中的第一修复外壳钻孔通道中钻孔以连接到外壳中的主槽,将第二修复外壳附接到管,在第二修复外壳钻 在其选定的成角度的槽中的孔通道连接到第二外壳中的主槽,以及将轮毂夹附接到第一修理外壳和第二修复外壳。 最后,该方法包括将密封剂注入到多个注射点中以填充修复外壳中的所选择的倾斜槽和主槽。