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CONTROL APPARATUS FOR POWER CONVERSION SYSTEM INCLUDING DC/AC CONVERTER CONNECTED BETWEEN ELECTRIC ROTATING MACHINE AND DC POWER SOURCE

  • US 20120091933A1
  • Filed: 10/13/2011
  • Published: 04/19/2012
  • Est. Priority Date: 10/15/2010
  • Status: Active Grant
First Claim
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1. A control apparatus for a power conversion system including a DC/AC converter circuit connected to an electric rotating machine at output terminals thereof and to a DC power source at input terminals thereof through a switching means, a capacitor being connected across the input terminals of the DC/AC converter circuit, the control apparatus comprising:

  • a current supply means configured to perform current supply control to supply a current to the electric rotating machine in order to discharge the capacitor by manipulating the DC/AC converter circuit in a state where the switching means is set open; and

    a speed lowering means configured to apply a brake force to a rotating shaft of the electric rotating machine to reduce a rotational speed of the electric rotating machine prior to the current supply control being performed by the current supply means if the rotational speed exceeds a specified speed.

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