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Drive system and AC conversion device

  • US 20050105305A1
  • Filed: 09/30/2004
  • Published: 05/19/2005
  • Est. Priority Date: 10/03/2003
  • Status: Active Grant
First Claim
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1. A drive system that is given AC power from an AC power supply to drive targets to be activated, comprising:

  • an AC conversion device for acquiring AC power from an AC power supply and converting the supplied AC power into converted AC power having a predetermined frequency and a predetermined voltage;

    an AC drive device that is given the converted AC power to be activated;

    a DC conversion device for acquiring AC power from an AC power supply and converting the supplied AC power into converted DC power having a predetermined voltage; and

    a DC drive device that is given the converted DC power to be activated, wherein the AC conversion device has a frequency converting unit for converting a frequency of AC power into a predetermined frequency and a voltage converting unit for converting a voltage of AC power into a predetermined voltage, and the frequency converting unit includes only one pair of a DC power generating circuit for AC conversion and an alternating power generating circuit for AC conversion, in which the DC power generating circuit for AC conversion converts the supplied AC power into DC power, and the alternating power generating circuit for AC conversion converts DC power which is generated by the DC power generating circuit for AC conversion, into AC power of a predetermined frequency.

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