VARIABLE SPEED DRIVE WITH INTEGRAL BYPASS CONTACTOR
    22.
    发明申请
    VARIABLE SPEED DRIVE WITH INTEGRAL BYPASS CONTACTOR 审中-公开
    具有整体旁路接触器的变速驱动

    公开(公告)号:WO2008097749A2

    公开(公告)日:2008-08-14

    申请号:PCT/US2008/052217

    申请日:2008-01-28

    Abstract: Systems and methods for operating a variable speed drive to receive an input AC power at a fixed AC input voltage and frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter stage to convert the input AC voltage to a boosted DC voltage, a DC link connected to the converter stage to filter and store the boosted DC voltage from the converter stage; and an inverter stage to convert the boosted DC voltage into AC power with variable voltage and the variable frequency. An integral bypass contactor is connected in parallel with the VSD between the AC power source and the AC output power. The integral bypass contactor is arranged to bypass the VSD when the VSD output frequency and voltage are approximately equal with the AC input voltage and frequency.

    Abstract translation: 用于操作变速驱动器以以固定的AC输入电压和频率接收输入AC电力的系统和方法,并以可变电压和可变频率提供输出AC电力。 变速驱动器包括转换器级,用于将输入交流电压转换为升压直流电压;连接到转换器级的直流链路,用于对来自转换器级的升压直流电压进行滤波和存储; 以及将升压的直流电压转换成具有可变电压和可变频率的交流电的逆变器级。 一体式旁路接触器与交流电源和交流输出电源之间的VSD并联连接。 当VSD输出频率和电压与交流输入电压和频率近似相等时,集成旁路接触器被布置为绕过VSD。

    COMMON MODE AND DIFFERENTIAL MODE FILTER FOR VARIABLE SPEED DRIVE
    24.
    发明申请
    COMMON MODE AND DIFFERENTIAL MODE FILTER FOR VARIABLE SPEED DRIVE 审中-公开
    通用模式和微分模式滤波器用于变速驱动器

    公开(公告)号:WO2008092152A2

    公开(公告)日:2008-07-31

    申请号:PCT/US2008052203

    申请日:2008-01-28

    Abstract: Systems and methods for improved Variable Speed Drives having active inverters include an input filter for filtering common mode and differential mode currents. A three-phase inductor has three windings, each winding of the three-phase inductor having a center tap dividing each winding into a pair of inductor sections; and a three-phase input capacitor bank connected in a wye configuration to the three center taps at one end, and to a common point at the opposite end. The three-phase input capacitor bank provides a short circuit for frequencies above a predetermined fundamental frequency for shunting such frequencies through the three phase capacitor bank, while passing the predetermined fundamental frequency to an input AC power source.

    Abstract translation: 用于具有有源逆变器的改进型变速驱动器的系统和方法包括用于对共模和差模电流进行滤波的输入滤波器。 三相电感器具有三个绕组,三相电感器的每个绕组具有将每个绕组分成一对电感器部分的中心抽头; 以及三相输入电容器组,该三相输入电容器组以三通形式连接到一端的三个中心抽头并且连接到相对端的公共点。 三相输入电容器组提供用于高于预定基频的频率的短路,以通过三相电容器组分流这些频率,同时将预定基频传递给输入AC电源。

Patent Agency Ranking