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ALTERNATOR SYSTEM

  • US 20030039130A1
  • Filed: 08/30/2002
  • Published: 02/27/2003
  • Est. Priority Date: 03/09/2000
  • Status: Active Grant
First Claim
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1. A system for enhancing the power output capability of a field controlled alternator having a field winding input and either a single phase or multi-phase alternator stator winding, the system comprising:

  • a power switching circuit including rectification circuitry for providing a full-wave rectified alternator output, inputs for receiving stator voltages, an input for receiving an operational state command, and a plurality of output voltage nodes, the power switching circuit being configured so that one operational state command effects connection of the alternator'"'"'s full-wave rectified output to one of the output voltage nodes and electrically isolates said one of the output voltage nodes from the remaining output voltage nodes, and another operational state command effects connection of the alternator'"'"'s full wave rectified output to another one of the output voltage nodes and electrically isolates said another one of the output voltage nodes from the remaining output voltage nodes;

    an operational state command generator that includes circuitry for determining which operational state command to apply to the power switching circuit, the operational state command generator circuit effecting relatively more effective time in which the power switching circuit has operational states that are associated with relatively higher node voltages as the speed of the alternator increases thereby allowing the equivalent average rectified output of the alternator to increase with the speed of the alternator; and

    a voltage regulation circuit for providing a variable current to the field winding input of the alternator so as to maintain the magnitude of one of the node voltages.

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