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    • 2. 外观设计
    • Sandbag
    • USD985928S1
    • 2023-05-16
    • US29881670
    • 2023-01-05
    • Fei Wang
    • Fei Wang
    • FIG. 1 is a first perspective view of a sandbag showing my new design;
      FIG. 2 is a second perspective view thereof;
      FIG. 3 is a front view thereof;
      FIG. 4 is a back view thereof;
      FIG. 5 is a left side view thereof;
      FIG. 6 is a right side view thereof;
      FIG. 7 is a top view thereof;
      FIG. 8 is a bottom view thereof;
      FIG. 9 is an enlarged view of the selected portion 9 in FIG. 1;
      FIG. 10 is an enlarged view of the selected portion 10 in FIG. 2; and,
      FIG. 11 is an enlarged view of the selected portion 11 in FIG. 4.
      The broken lines shown in the drawings depict portions of the sandbag that form no part of the claimed design.
      The dash-dot-dash broken lines depict cut lines of the enlarged portions and form no part of the claimed design.
    • 6. 发明授权
    • Control of parallel-connected current source rectifiers
    • 并联电流源整流器的控制
    • US09270198B2
    • 2016-02-23
    • US14204403
    • 2014-03-11
    • Leon Monroe TolbertBen GuoFan XuFei WangBenjamin J. Blalock
    • Leon Monroe TolbertBen GuoFan XuFei WangBenjamin J. Blalock
    • H02M7/219H02M7/23H02M7/217
    • H02M7/219H02M1/4208H02M7/04H02M7/217H02M7/23H02M2007/2195Y02B70/1408
    • A three-phase alternating current (AC) to direct current (DC) converter may include a three-phase AC filter receiving a three-phase AC power supply, a plurality of three-phase current source rectifiers (CSR) connected in parallel with each other and connected to a three-phase AC filter, and an output filter connected to the CSR's to generate a DC output. Each of the CSRs may include six switches and a free-wheeling diode. Each of the three filtered AC inputs from the three-phase AC filter may be connected via a switch of the six switches to selectably send current into a positive line, and each of three filtered AC inputs from the three-phase AC filter may be connected via another switch of the six switches to selectably receive current from a negative line. The free-wheeling diode may have a cathode connected to the positive line and an anode connected to the negative line.
    • 直流(DC)转换器的三相交流电(AC)可以包括接收三相交流电源的三相交流滤波器,与每一相并联连接的多个三相电流源整流器(CSR) 连接到三相交流滤波器,连接到CSR的输出滤波器产生直流输出。 每个CSR可以包括六个开关和一个续流二极管。 来自三相AC滤波器的三个滤波的AC输入中的每一个可以经由六个开关的开关连接,以可选择地将电流发送到正线中,并且来自三相AC滤波器的三个滤波的AC输入中的每一个可以被连接 通过六个开关的另一开关可选地从负线接收电流。 续流二极管可以具有连接到正极线的阴极和连接到负极线的阳极。