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Article | REF: D3173 V1

Thyristor current switches

Authors: Henri FOCH, Yvon CHÉRON, Raphaël ARCHES, Bernard ESCAUT, Pierre MARTY, Michel METZ

Publication date: September 10, 1993 | Lire en français

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    4. Polyphase thyristor current switches

    The basic structure of a polyphase current switch is shown in figure 26 .

    4.1 Rectified voltage study

    • Waveform: the rectified voltage wave is formed by a succession of identical sinusoidal portions, each corresponding to an operating sequence:

      • if m is even, there are m sequences and the pulsation index is p = m ;

      • if m is odd, there are 2m sequences and the pulsation index is p = 2m .

      An odd number of phases is therefore favorable, because for the same pulsation index, and therefore the same voltage ripple...

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