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    • 2. 发明申请
    • LOAD TAP CHANGER
    • 负载更换
    • US20140055225A1
    • 2014-02-27
    • US13593825
    • 2012-08-24
    • Sebastian Pedro RosadoTiziana BertoncelliPiniwan Thiwanka Bandara WijekoonAra PanosyanManoj Ramprasad ShahPaolo Soldi
    • Sebastian Pedro RosadoTiziana BertoncelliPiniwan Thiwanka Bandara WijekoonAra PanosyanManoj Ramprasad ShahPaolo Soldi
    • H01F21/12
    • H01F29/04
    • A load tap changer includes a mechanical switch, a semiconductor switch and an impedance branch or an uncontrolled semiconductor switch. The mechanical switch is connected to a power terminal of a voltage conversion device to carry an electric current and is activated to switch from a first tap to a second tap of the voltage conversion device when a tap change signal is received. The semiconductor switch is then connected between the first tap and the power terminal of the voltage conversion device when the tap change signal is received and is disconnected before the mechanical switch is connected to the second tap. The impedance branch or the uncontrolled semiconductor switch is connected between the second tap and the power terminal of the voltage conversion device before the mechanical switch is connected to the second tap. The impedance or the uncontrolled semiconductor switch is disconnected after the mechanical switch is connected to the second tap.
    • 有载分接开关包括机械开关,半导体开关和阻抗分支或不受控制的半导体开关。 当接收到抽头变换信号时,机械开关连接到电压转换装置的电源端子以承载电流并且被激活以从电压转换装置的第一抽头切换到第二抽头。 然后当接收到抽头变换信号时,半导体开关连接在第一抽头和电压转换装置的电源端子之间,并且在机械开关连接到第二分接头之前被断开。 在机械开关连接到第二分接头之前,阻抗分支或不受控制的半导体开关连接在第二分接头和电压转换装置的电源端子之间。 机械开关连接到第二分接头后,阻抗或不受控制的半导体开关断开。