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System and method for operating a soft starter in conjunction with a single to three phase static converter

  • US 20060049793A1
  • Filed: 08/19/2005
  • Published: 03/09/2006
  • Est. Priority Date: 09/03/2004
  • Status: Active Grant
First Claim
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1. A motor controller system comprising:

  • solid state switches for connection between a single phase to three phase static converter and motor terminals for controlling application of three phase power to the motor;

    sensors for sensing power from the static converter; and

    a control connected to the sensors and the solid state switches for controlling operation of the solid state switches to run the motor, the control including a three phase detection scheme for preventing operation of the solid state switches in the absence of desired three phase power from the static converter, and a motor start scheme for disabling the three phase detection scheme for a select time after a motor run signal.

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