Uninterruptible power supplies with dual-sourcing capability and methods
of operation thereof
    1.
    发明授权
    Uninterruptible power supplies with dual-sourcing capability and methods of operation thereof 有权
    具有双重来源功能的不间断电源及其操作方法

    公开(公告)号:US6160722A

    公开(公告)日:2000-12-12

    申请号:US401423

    申请日:1999-09-22

    摘要: An uninterruptible power supply (UPS) includes an AC source port configured to connect to an AC power source, a DC source port configured to connect to a DC power source and a load port configured to connect to a load. A rectifier circuit is operative to selectively couple the AC source port to first and second voltage busses through a first inductance. An inverter circuit is operative to selectively couple the load port to the first and second voltage busses through a second inductance. A bidirectional DC source coupling circuit is operative to couple the DC source port to the first and second voltage busses to provide bidirectional power transfer therebetween, preferably such that a voltage at the DC source port is maintained in a substantially fixed proportion to first and second DC voltages at respective ones of the first and second voltage busses. In one embodiment, the bidirectional DC source coupling circuit includes a transformer having first and second inductively coupled windings, the first winding having first and second end taps and a center tap coupled to the neutral bus. A switching circuit is operative to selectively couple the first end tap of the first winding to the first and second voltage busses. A rectifying circuit couples the second end tap of the first winding to the first and second voltage busses. A bidirectional DC-AC converter circuit is coupled between the second winding and the DC source port. Related operating methods are also discussed.

    摘要翻译: 不间断电源(UPS)包括配置为连接到AC电源的AC源端口,被配置为连接到DC电源的DC源端口和被配置为连接到负载的负载端口。 整流器电路用于通过第一电感将AC源端口选择性地耦合到第一和第二电压总线。 逆变器电路用于通过第二电感将负载端口选择性地耦合到第一和第二电压总线。 双向DC源耦合电路用于将DC源端口耦合到第一和第二电压总线,以在它们之间提供双向功率传输,优选地使得DC源端口处的电压以基本上固定的比例维持在第一和第二DC 第一和第二电压总线中相应的电压。 在一个实施例中,双向DC源耦合电路包括具有第一和第二电感耦合绕组的变压器,第一绕组具有第一和第二端部抽头以及耦合到中性母线的中心抽头。 切换电路用于选择性地将第一绕组的第一端头抽头耦合到第一和第二电压总线。 整流电路将第一绕组的第二端抽头耦合到第一和第二电压总线。 双向DC-AC转换器电路耦合在第二绕组和DC源端口之间。 还讨论了相关的操作方法。

    Method And Apparatus For Receiving A Universal Input Voltage In A Welding Power Source
    2.
    发明申请
    Method And Apparatus For Receiving A Universal Input Voltage In A Welding Power Source 审中-公开
    焊接电源中接收通用输入电压的方法和装置

    公开(公告)号:US20070295703A1

    公开(公告)日:2007-12-27

    申请号:US11839702

    申请日:2007-08-16

    申请人: James Thommes

    发明人: James Thommes

    IPC分类号: B23K9/10

    摘要: A method and apparatus for providing a welding current is disclosed. The power source is capable of receiving any input voltage over a wide range of input voltages and includes an input rectifier that rectifies the ac input into a dc signal. A dc voltage stage converts the dc signal to a desired dc voltage and an inverter inverts the dc signal into a second ac signal. An output transformer receives the second ac signal and provides a third ac signal that has a current magnitude suitable for welding. The welding current may be rectified and smoothed by an output inductor and an output rectifier. A controller provides control signals to the inverter and an auxiliary power controller that can receive a range of input voltages and provide a control power signal to the controller.

    摘要翻译: 公开了一种用于提供焊接电流的方法和装置。 电源能够在宽范围的输入电压下接收任何输入电压,并且包括将ac输入整流为直流信号的输入整流器。 直流电压级将直流信号转换为期望的直流电压,并且逆变器将直流信号反转成第二交流信号。 输出变压器接收第二交流信号,并提供具有适合于焊接的电流大小的第三交流信号。 焊接电流可以由输出电感器和输出整流器整流和平滑。 控制器向变频器和辅助电力控制器提供控制信号,该辅助电力控制器可以接收一定范围的输入电压并向控制器提供控制功率信号。

    Method and apparatus for receiving a universal input voltage in a welding power source

    公开(公告)号:US20050199604A1

    公开(公告)日:2005-09-15

    申请号:US11086842

    申请日:2005-03-21

    申请人: James Thommes

    发明人: James Thommes

    摘要: A method and apparatus for providing a welding current is disclosed. The power source is capable of receiving any input voltage over a wide range of input voltages and includes an input rectifier that rectifies the ac input into a dc signal. A dc voltage stage converts the dc signal to a desired dc voltage and an inverter inverts the dc signal into a second ac signal. An output transformer receives the second ac signal and provides a third ac signal that has a current magnitude suitable for welding. The welding current may be rectified and smoothed by an output inductor and an output rectifier. A controller provides control signals to the inverter and an auxiliary power controller that can receive a range of input voltages and provide a control power signal to the controller.