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Analysis of discontinuous current in a 12-pulse thyristor DC motor drive

机译:分析12脉冲晶闸管直流电动机驱动器中的不连续电流

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The discontinuous current magnitude in a 12-pulse DC drive is determined in terms of the significant parameters including motor internal inductance, the interphase inductance, and the firing delay angle to the drive power converters. It is shown that there are two significant ranges of firing angle advance in discontinuous current. In range 1, from 0 to 15 degrees advance, the current is discontinuous in both converters and the DC motor. In range 2, from 15 to 30 degrees of firing angle advance, the current is discontinuous in both converters but continuous to the DC motor. Further firing angle advance causes continuous current in both converters and the motor. Both firing angle ranges of discontinuous current are analyzed to determine the magnitude of average output current as a function of the significant parameters.
机译:12脉冲直流驱动器中的不连续电流大小取决于重要参数,包括电动机内部电感,相间电感以及与驱动功率转换器的点火延迟角。结果表明,在不连续电流中有两个重要的触发角提前量范围。在范围1中(从0到15度提前),电流在转换器和直流电动机中都是不连续的。在范围2中,从15至30度的点火角提前,两个转换器中的电流是不连续的,但一直流到直流电动机。进一步的点火角提前会在转换器和电动机中产生连续电流。分析两个不连续电流的触发角范围,以确定作为重要参数的函数的平均输出电流的大小。

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