PWM converter system
    1.
    发明授权
    PWM converter system 失效
    PWM转换器系统

    公开(公告)号:US06556464B2

    公开(公告)日:2003-04-29

    申请号:US09956257

    申请日:2001-09-20

    IPC分类号: H02M75387

    摘要: A single-phase PWM converter system in accordance with the present invention employs a sample-and-hold circuit which samples and holds a direct current in the state wherein one of two-phase gate signals of a positive or negative side arm is ON and the other phase is OFF, determines the sign of an output of the sample-and-hold circuit according to the two-phase gate condition, detects a phase current at the input side of the converter, and controls a voltage at the input side of the converter so that the detected current value agrees with a power supply current command. Further, a three-phase PWM converter system in accordance with the present invention detects the effective current and the ineffective current of the power supply current from the direct current, and based on the values, controls the PWM converter so that the sine wave power supply current whose power supply power factor is 1 is provided.

    摘要翻译: 根据本发明的单相PWM转换器系统采用采样和保持电路,其采样和保持直流电流,其中正或负侧臂的两相门信号之一为ON, 其他相位为OFF,根据两相门条件确定采样保持电路的输出的符号,检测转换器输入侧的相电流,并控制转换器的输入侧的电压 转换器,使得检测到的电流值与电源电流指令一致。此外,根据本发明的三相PWM转换器系统从直流电流检测电源电流的有效电流和无效电流,并且基于 在该值上,控制PWM转换器,使得提供功率因数为1的正弦波电源电流。

    Drive apparatus and XY table utilizing the same
    2.
    发明授权
    Drive apparatus and XY table utilizing the same 失效
    驱动装置和XY台使用它

    公开(公告)号:US06975048B2

    公开(公告)日:2005-12-13

    申请号:US10627777

    申请日:2003-07-28

    IPC分类号: H02K29/08 H02K41/03 H02K41/00

    摘要: A drive apparatus overcomes the problems of ensuring accurate mounting of a plurality of armature coils relative to a plurality of magnetic pole position detectors, limitations concerning the location for mounting, and the extension of primary-side length. The drive apparatus comprises a primary side including an arrangement of a plurality of armatures each having a core made of a magnetic material with coil windings. It also comprises a secondary side including a permanent magnet movably supported relative to the armatures via a gap. A magnetic pole position detector is disposed between adjacent armatures.

    摘要翻译: 驱动装置克服了确保多个电枢线圈相对于多个磁极位置检测器的精确安装,关于安装位置的限制和初级侧长度的延伸的问题。 驱动装置包括初级侧,其包括多个电枢的布置,每个电枢具有由具有线圈绕组的磁性材料制成的芯。 它还包括二次侧,其包括经由间隙相对于电枢可移动地支撑的永磁体。 磁极位置检测器设置在相邻电枢之间。