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    • 5. 发明申请
    • CONSTANT VOLTAGE WELDER CAPACITOR RIPPLE CURRENT REDUCTION METHOD AND SYSTEM
    • 恒电压焊机电容器纹波电流减少方法和系统
    • US20090201704A1
    • 2009-08-13
    • US12030831
    • 2008-02-13
    • Darrell L. SickelsBernard J. Vogel
    • Darrell L. SickelsBernard J. Vogel
    • H02M1/14
    • B23K9/0732B23K9/073B23K9/1043H02M1/14
    • A power circuit, in certain embodiments, includes an inductor to limit current through a capacitor, wherein the capacitor is configured to smooth ripple for a constant voltage welding system. More specifically, the power circuit may include a rectifier configured to convert AC power to DC power. The rectifier may be coupled to a DC bus configured to transmit the DC power. A capacitive circuit having the capacitor may be coupled across the DC bus to smooth ripple in the DC power. The inductor, e.g., coupled between the DC bus and the capacitive circuit, limits the rate of current flow between the capacitive circuit and the DC bus during a welding operation, thereby reducing heating in the output capacitive circuit. A further inductor may be coupled to one side of the DC bus to stabilize the rate of current flow from the power circuit to a load.
    • 在某些实施例中,电源电路包括用于限制通过电容器的电流的电感器,其中电容器被配置为平滑恒定电压焊接系统的纹波。 更具体地,电源电路可以包括被配置为将AC电力转换为DC电力的整流器。 整流器可以耦合到配置成传输DC电力的DC总线。 具有电容器的电容电路可以跨DC总线耦合以平滑直流电源中的纹波。 耦合在DC总线和电容电路之间的电感器限制了在焊接操作期间电容电路和DC总线之间的电流流动速率,从而减少了输出电容电路中的加热。 另外的电感器可以耦合到DC总线的一侧,以稳定从电源电路到负载的电流流量。