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Segmented waveform converter on controlled field variable speed generator

  • US 10,148,207 B2
  • Filed: 10/16/2015
  • Issued: 12/04/2018
  • Est. Priority Date: 10/16/2015
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a controlled field alternator configured to generate a polyphase signal including a first component and a second component;

    a segmented waveform converter including a plurality of switches connected between the polyphase signal of the controlled field alternator and an output filter; and

    a controller configured to calculate a plurality of combinations of available voltages through combinations of phase components of the polyphase signal through different settings for the plurality of switches, and access a target waveform, wherein, in response to the target waveform and measurements of an output at the output filter having an output frequency, the controller is configured to select one of the plurality of combinations of phase components to provide a control signal having piecewise segments at a predetermined frequency to provide a field current control signal to the controlled field alternator, wherein the predetermined frequency is greater than the output frequency.

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