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Combined power inverter and auxilliary power supply using null vector modulation

  • US 6,208,540 B1
  • Filed: 05/23/2000
  • Issued: 03/27/2001
  • Est. Priority Date: 05/23/2000
  • Status: Expired due to Term
First Claim
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1. Power generating apparatus comprising:

  • a DC power source;

    a three-phase voltage source power inverter coupled to the power source;

    a load coupled to outputs of the three-phase voltage source power inverter;

    an auxiliary power supply coupled to one output of the three-phase voltage source power inverter for producing a DC output voltage; and

    a controller coupled to an input and output of the auxiliary power supply for controlling frequencies of null line-to-line zero voltage vectors of the three-phase voltage source power inverter so that an AC voltage is generated by the auxiliary power supply that is not seen by the load.

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