×

Starter generator system with two stator exciter windings

  • US 4,743,777 A
  • Filed: 03/07/1986
  • Issued: 05/10/1988
  • Est. Priority Date: 03/07/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. A starter-generator system comprising:

  • a dynamoelectric machine having a stator and a rotor which is mounted for rotation with respect to said stator;

    a main field winding;

    an exciter armature winding;

    means for rectifying an output from said exciter armature winding to provide DC excitation for said main field winding;

    said main field winding, exciter armature winding, and means for rectifying being mounted for rotation with said rotor;

    a main armature winding mounted on said stator and magnetically coupled to said main field winding.a distributed AC exciter field winding mounted on said stator;

    a distributed DC exciter field winding mounted on said stator;

    said AC and DC exciter field windings being magnetically coupled to said exciter armature winding;

    a variable voltage, variable frequency power converter having an input and an output;

    means for alternatively connecting said main armature winding to the output of said variable voltage, variable frequency power converter when said dynamoelectric machine is operated as a motor and connecting said main armature winding to the input of said variable voltage, variable frequency power converter when said dynamoelectric machine is operated as a generator;

    means for supplying power to the input of said variable voltage, variable frequency power converter when said dynamoelectric machine is operated as a motor;

    means for supplying external AC power to said AC exciter field winding when said dynamoelectric machine is operated as a motor;

    means for supplying external DC power to said DC exciter field winding when said dynamoelectric machine is operated as a generator.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×