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Control magnetic bearing device

  • US 7,053,582 B2
  • Filed: 12/08/2005
  • Issued: 05/30/2006
  • Est. Priority Date: 09/18/2002
  • Status: Active Grant
First Claim
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1. A control magnetic bearing device comprising:

  • a plurality of control magnetic bearings configured to contactlessly support a rotor;

    an electric motor configured to rotate the rotor;

    a magnetic bearing drive circuit configured to drive the magnetic bearings;

    an inverter configured to drive the electric motor;

    a main control unit configured to control the magnetic bearing drive circuit and the inverter; and

    a power source unit connected to an external power source and configured to supply electric power to the magnetic bearing drive circuit, the inverter, and the main control unit,wherein the main control unit has software-programmable digital processing means for controlling a command current value to be output to the inverter, in accordance with an input voltage value from the power source unit.

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