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System and method for starting a wound rotor motor

  • US 7,511,446 B2
  • Filed: 08/05/2005
  • Issued: 03/31/2009
  • Est. Priority Date: 08/05/2005
  • Status: Active Grant
First Claim
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1. A system exclusively for starting and regulating a wound rotor motor having a stator connected by an AC bus to an AC power source comprising:

  • a phase-angle controlled silicon controlled rectifier converter having an input and an output, the input of which is connected to the rotor of the motor;

    a voltage source inverter having an input and an output, the input of which is connected to the output of said converter;

    a voltage source converter having an input and an output, the input of which is connected by a bidirectional constant voltage DC bus to the output of said inverter and the output of which is connected to the AC bus; and

    a shorting contactor connected between the input and the output of said rectifier converter.

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