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PROGRAMMED WAVEFORM POWER INVERTER CONTROL SYSTEM

  • US 3,805,139 A
  • Filed: 09/29/1971
  • Issued: 04/16/1974
  • Est. Priority Date: 09/29/1972
  • Status: Expired due to Term
First Claim
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1. A method of generating multi-phase waveforms comprising the steps of:

  • 1. generating a sequence of timing pulses;

    2. encoding said sequence of timing pulses into a plurality of modulated pulse sequences P1 through PN, the modulation of each sequence P1 through PN defining a different portion of a cycle of a waveform of said multi-phase waveforms;

    3. connecting sequences P1 through PN to corresponding switching circuits S1 through SN respectively, each of said switching circuits S1 through SN providing an energy pulse to integrating means whenever a pulse of a connected pulse sequence of said sequences P1 through PN is received, thereby each of said switches in cooperation with its connected modulated pulse sequence generating a different portion of a waveform of said multi-phase waveforms;

    4. precessing the relationship of said modulated pulse sequences to said switches by repeating step 1 and step 2 and reconnecting said modulated pulse sequences to said switching circuits so that said sequences P2 through PN, P1 are connected to said switching circuits S1 through SN respectively whereby each switching circuit is controlled by a next sequence of modulated pulses thereby continuing to generate next successive portions of each cycle of each of said multi-phase waveforms.

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