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Controller for AC generator

  • US 8,093,772 B2
  • Filed: 08/02/2010
  • Issued: 01/10/2012
  • Est. Priority Date: 02/02/2006
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • a generator configured to generate an AC signal, the generator comprising;

    a stator, wherein an outer peripheral surface of the stator is axially crenellated with a predetermined number of teeth and slots;

    an output terminal electrically coupled to a fusible link;

    an electrically conductive phase ring coupled to the fusible link; and

    a pole phase coil conductor, electrically coupled to the phase ring and to a winding of insulated wiring disposed around at least one of the teeth of the stator; and

    a control system coupled to the generator, the control system responsive to at least one phase of the AC signal from the generator, the control system for generating control signals to a switching rectifier to generate a regulated DC signal, the control system comprising;

    a zero crossing detector, responsive to a first signal representative of the AC phase, for generating indicia of zero crossings in the AC phase;

    a variable ramp generator, responsive to a second signal representative of the AC phase and the indicia of zero crossings, for generating a ramp signal indicative of the time integral of the voltage of the AC phase accumulated from the occurrence of a zero crossing and reset upon the occurrence of the next successive zero crossing; and

    a trigger generator, responsive to the time integral ramp signal and a reference signal indicative of a desired firing angle to maintain a set DC output, for generating the control signals to the switching rectifier in accordance with a comparison of the time integral ramp signal to the reference signal.

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